i am new to JavaScript and this site and am trying to make a username and password creator and log in. for now i am just using a premade username and password for now. i have tried to do this with JavaScript but my code wont work for me on notepad++. i have learned a basic understanding of jQuery as a last resort to get this mock up site to run. can you tell me if there is a way to do it with JavaScript and how and if not can you explain the code to share variables across two different webpages using jQuery. pleas explain in plain simple English because as i said i am new to JavaScript and brand new to jQuery.
here is where the username and password variables are defined.
<!DOCTYPE html>
<html>
<head>
<title>
create account
</title>
<script>
sessionStorage.setItem( "username1", ["bob", "sam"]);
sessionStorage.setItem( "password1", ["lol", "jk"]);
</script>
</head>
<body>
</body>
</html>
here is where i call those variables
<!DOCTYPE html>
<html>
<head>
<title>
log on page
</title>
<script type = "text/javascript">
var count = 2;
function validate() {
var un = document.myform.username.value;
var pw = document.myform.pword.value;
var valid = false;
var unArray = sessionStorage.getItem("username1");
var unArray = sessionStorage.getItem("password1");
for (var i=0; i <unArray.length; i++) {
if ((un == unArray[i]) && (pw == pwArray[i])) {
valid = true;
break;
}
}
if (valid) {
alert ("Login was successful");
window.location = "http://www.google.com";
return false;
}
var t = " tries";
if (count == 1) {t = " try"}
if (count >= 1) {
alert ("Invalid username and/or password. " +
"You have " + count + t + " left.");
document.myform.username.value = "";
document.myform.pword.value = "";
setTimeout("document.myform.username.focus()", 25);
setTimeout("document.myform.username.select()", 25);
count --;
}
else {
alert ("Still incorrect! You have no more tries left!");
document.myform.username.value = "No more tries allowed!";
document.myform.pword.value = "";
document.myform.username.disabled = true;
document.myform.pword.disabled = true;
return false;
}
}
</script>
<!--this-->
<style>
p.log_on{
position: fixed;
top: 30px;
left: 20px;
}
</style>
</head>
<body>
<!--here-->
<form name = "myform">
<p class="log_on">
ENTER USER NAME <input type="text" name="username"><br><br><br><br><br>
ENTER PASSWORD <input type="password" name="pword">
<input type="button" value="Check In" name="Submit" onclick="validate()">
</p>
</form>
<!--to here-->
</body>
</html>
Related
I am a high school student and I am trying to make a password cracker to show my school how vulnerable their Student Dashboard is. A student Dashboard is a website that contains student accounts, links, and private information like addresses, passwords, and relatives.
Everyone's password has the following syntax: Pmonth/day/year
EXAMPLE: P05/03/2005
There is a problem though, when the code clicks the sign in button, the URL changes, and the page reloads, which stops the code when I run it in the console.
Is there a way that I could keep the code running from console even if page reloads.
I have thought of using web cookies to store the last used password, and then when the page reloads, just input it into the password textbox, but I am not sure, since I haven't used cookies before.
Any help is greatly appreciated.
What I am aiming to do is that I input an Id, and then it tries to crack the password by going through all dates a year has after 2003.
I will appreciate all answers, but I would like my answer in raw javascript(no libraries).
The sign in page consists of an username textbox, a password textbox and a sign in button.
Here's what the sign in page looks like: Sign in page
Here is the source code of the page:
<!DOCTYPE html>
<html lang="en-US">
<head>
<meta http-equiv="X-UA-Compatible" content="IE=10.000"/>
<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no"/>
<meta http-equiv="content-type" content="text/html;charset=UTF-8" />
<meta http-equiv="cache-control" content="no-cache,no-store"/>
<meta http-equiv="pragma" content="no-cache"/>
<meta http-equiv="expires" content="-1"/>
<meta name='mswebdialog-title' content='Connecting to Broward County Public Schools'/>
<title>Sign In</title>
<script type='text/javascript'>
//<![CDATA[
function LoginErrors(){this.userNameFormatError = 'Enter your user ID in the format \u0026quot;domain\\user\u0026quot; or \u0026quot;user#domain\u0026quot;.'; this.passwordEmpty = 'Enter your password.'; this.passwordTooLong = 'Password must be shorter than 128 characters.';}; var maxPasswordLength = 128;
//]]>
</script>
<script type='text/javascript'>
//<![CDATA[
// Copyright (c) Microsoft Corporation. All rights reserved.
function InputUtil(errTextElementID, errDisplayElementID) {
if (!errTextElementID) errTextElementID = 'errorText';
if (!errDisplayElementID) errDisplayElementID = 'error';
this.hasFocus = false;
this.errLabel = document.getElementById(errTextElementID);
this.errDisplay = document.getElementById(errDisplayElementID);
};
InputUtil.prototype.canDisplayError = function () {
return this.errLabel && this.errDisplay;
}
InputUtil.prototype.checkError = function () {
if (!this.canDisplayError){
throw new Error ('Error element not present');
}
if (this.errLabel && this.errLabel.innerHTML) {
this.errDisplay.style.display = '';
var cause = this.errLabel.getAttribute('for');
if (cause) {
var causeNode = document.getElementById(cause);
if (causeNode && causeNode.value) {
causeNode.focus();
this.hasFocus = true;
}
}
}
else {
this.errDisplay.style.display = 'none';
}
};
InputUtil.prototype.setInitialFocus = function (input) {
if (this.hasFocus) return;
var node = document.getElementById(input);
if (node) {
if ((/^\s*$/).test(node.value)) {
node.focus();
this.hasFocus = true;
}
}
};
InputUtil.prototype.setError = function (input, errorMsg) {
if (!this.canDisplayError) {
throw new Error('Error element not present');
}
input.focus();
if (errorMsg) {
this.errLabel.innerHTML = errorMsg;
}
this.errLabel.setAttribute('for', input.id);
this.errDisplay.style.display = '';
};
InputUtil.makePlaceholder = function (input) {
var ua = navigator.userAgent;
if (ua != null &&
(ua.match(/MSIE 9.0/) != null ||
ua.match(/MSIE 8.0/) != null ||
ua.match(/MSIE 7.0/) != null)) {
var node = document.getElementById(input);
if (node) {
var placeholder = node.getAttribute("placeholder");
if (placeholder != null && placeholder != '') {
var label = document.createElement('input');
label.type = "text";
label.value = placeholder;
label.readOnly = true;
label.style.position = 'absolute';
label.style.borderColor = 'transparent';
label.className = node.className + ' hint';
label.tabIndex = -1;
label.onfocus = function () { this.nextSibling.focus(); };
node.style.position = 'relative';
node.parentNode.style.position = 'relative';
node.parentNode.insertBefore(label, node);
node.onkeyup = function () { InputUtil.showHint(this); };
node.onblur = function () { InputUtil.showHint(this); };
node.style.background = 'transparent';
node.setAttribute("placeholder", "");
InputUtil.showHint(node);
}
}
}
};
InputUtil.focus = function (inputField) {
var node = document.getElementById(inputField);
if (node) node.focus();
};
InputUtil.hasClass = function(node, clsName) {
return node.className.match(new RegExp('(\\s|^)' + clsName + '(\\s|$)'));
};
InputUtil.addClass = function(node, clsName) {
if (!this.hasClass(node, clsName)) node.className += " " + clsName;
};
InputUtil.removeClass = function(node, clsName) {
if (this.hasClass(node, clsName)) {
var reg = new RegExp('(\\s|^)' + clsName + '(\\s|$)');
node.className = node.className.replace(reg, ' ');
}
};
InputUtil.showHint = function (node, gotFocus) {
if (node.value && node.value != '') {
node.previousSibling.style.display = 'none';
}
else {
node.previousSibling.style.display = '';
}
};
//]]>
</script>
<link rel="stylesheet" type="text/css" href="/adfs/portal/css/style.css?id=D74D4D6943F32AE6F7F11D14D601DBB0E1A58919176EE512150366B6279AAF99" /><style>.illustrationClass {background-image:url(/adfs/portal/illustration/illustration.jpg?id=EB0C84D8C0F5E1E10127F3AD4A4C45BCDAA7AC32FFE204DACEBEAF85C61DA2F9);}</style>
</head>
<body dir="ltr" class="body">
<div id="noScript" style="position:static; width:100%; height:100%; z-index:100">
<h1>JavaScript required</h1>
<p>JavaScript is required. This web browser does not support JavaScript or JavaScript in this web browser is not enabled.</p>
<p>To find out if your web browser supports JavaScript or to enable JavaScript, see web browser help.</p>
</div>
<script type="text/javascript" language="JavaScript">
document.getElementById("noScript").style.display = "none";
</script>
<div id="fullPage">
<div id="brandingWrapper" class="float">
<div id="branding"></div>
</div>
<div id="contentWrapper" class="float">
<div id="content">
<div id="header">
<img class="logoImage" src="/adfs/portal/logo/logo.png?id=4F68FA71CF303418A19ABB7297038B46FA3E25ED3754C2175A7B840EC6F97BE8" alt="Broward County Public Schools"/>
</div>
<div id="workArea">
<div id="authArea" class="groupMargin">
<div id="loginArea">
<div id="loginMessage" class="groupMargin">Sign in with your organizational account</div>
<form method="post" id="loginForm" autocomplete="off" novalidate="novalidate" onKeyPress="if (event && event.keyCode == 13) Login.submitLoginRequest();" action="/adfs/ls/?wctx=WsFedOwinState%3doJ9avOrRYr1UaVPxwGOAIzjfQ78zxpRhLHRmhne8M1AEjI9Y5SUSP0viJgR2iCtpjpu-gGqW73MjMkyVrK9b_N9m5JlVSyznBQxTGDsRm5WDilyumMYDi4x5qL9-To1jCTs2bXP7iiZJuHS0aLiN-jXhIHy26i4J9qpsUHbiivCUYCZQNb0m68RqVJwDU-Cqf0DW1ieuP1_sAcqk3l0nwBlRoG-cO039YHVhBOyZSbnHfZtGqJRSX7p6yt5wwRQ6Y5vz9dPJ8V7FTz6-GIZPnk4ee4A&wa=wsignin1.0&wtrealm=http%3a%2f%2fgb.browardschools.com%2fpinnacle%2fgradebook%2f" >
<div id="error" class="fieldMargin error smallText">
<label id="errorText" for=""></label>
</div>
<div id="formsAuthenticationArea">
<div id="userNameArea">
<input id="userNameInput" name="UserName" type="email" value="" tabindex="1" class="text fullWidth"
spellcheck="false" placeholder="someone#example.com" autocomplete="off"/>
</div>
<div id="passwordArea">
<input id="passwordInput" name="Password" type="password" tabindex="2" class="text fullWidth"
placeholder="Password" autocomplete="off"/>
</div>
<div id="kmsiArea" style="display:none">
<input type="checkbox" name="Kmsi" id="kmsiInput" value="true" tabindex="3" />
<label for="kmsiInput">Keep me signed in</label>
</div>
<div id="submissionArea" class="submitMargin">
<span id="submitButton" class="submit" tabindex="4"
onKeyPress="if (event && event.keyCode == 32) Login.submitLoginRequest();"
onclick="return Login.submitLoginRequest();">Sign in</span>
</div>
</div>
<input id="optionForms" type="hidden" name="AuthMethod" value="FormsAuthentication"/>
</form>
<div id="authOptions">
<form id="options" method="post" action="https://fs.browardschools.com:443/adfs/ls/?wctx=WsFedOwinState%3doJ9avOrRYr1UaVPxwGOAIzjfQ78zxpRhLHRmhne8M1AEjI9Y5SUSP0viJgR2iCtpjpu-gGqW73MjMkyVrK9b_N9m5JlVSyznBQxTGDsRm5WDilyumMYDi4x5qL9-To1jCTs2bXP7iiZJuHS0aLiN-jXhIHy26i4J9qpsUHbiivCUYCZQNb0m68RqVJwDU-Cqf0DW1ieuP1_sAcqk3l0nwBlRoG-cO039YHVhBOyZSbnHfZtGqJRSX7p6yt5wwRQ6Y5vz9dPJ8V7FTz6-GIZPnk4ee4A&wa=wsignin1.0&wtrealm=http%3a%2f%2fgb.browardschools.com%2fpinnacle%2fgradebook%2f">
<script type="text/javascript">
function SelectOption(option) {
var i = document.getElementById('optionSelection');
i.value = option;
document.forms['options'].submit();
return false;
}
</script>
<input id="optionSelection" type="hidden" name="AuthMethod" />
<div class='groupMargin'></div>
</form>
</div>
<div id="introduction" class="groupMargin">
<p align=center><b>REPORT CHILD ABUSE</b></p><p align=center><b>CALL 1-800-96ABUSE OR 1-800-962-2873</b></p></BR><p align=center><b>Students</b></p><p>If you are a student, your login name is your
student number (06########). If you have forgotten your password, please contact your teacher. </p></BR><p
align=center><b>Staff</b></p><p>If you are staff, your login name should be your staff ID (P0#######). If you have forgotten your password,
please contact your tech.</p></BR><p align=center><b>Parents Accessing Pinnacle</b></p><p>If you are a parent of a student in grades 6-12
and are accessing Pinnacle, please use your child’s Active Directory userid and password to login. If you are the parent of a child in
grades 3-5, please use the <b>BCPS Mobile App</b> to view the current average grade your child has earned in each class.</p>
</div>
<script type="text/javascript">
//<![CDATA[
function Login() {
}
Login.userNameInput = 'userNameInput';
Login.passwordInput = 'passwordInput';
Login.initialize = function () {
var u = new InputUtil();
u.checkError();
u.setInitialFocus(Login.userNameInput);
u.setInitialFocus(Login.passwordInput);
}();
Login.submitLoginRequest = function () {
var u = new InputUtil();
var e = new LoginErrors();
var userName = document.getElementById(Login.userNameInput);
var password = document.getElementById(Login.passwordInput);
if (!userName.value || !userName.value.match('[#\\\\]')) {
u.setError(userName, e.userNameFormatError);
return false;
}
if (!password.value) {
u.setError(password, e.passwordEmpty);
return false;
}
if (password.value.length > maxPasswordLength) {
u.setError(password, e.passwordTooLong);
return false;
}
document.forms['loginForm'].submit();
return false;
};
InputUtil.makePlaceholder(Login.userNameInput);
InputUtil.makePlaceholder(Login.passwordInput);
//]]>
</script>
</div>
</div>
</div>
<div id="footerPlaceholder"></div>
</div>
<div id="footer">
<div id="footerLinks" class="floatReverse">
<div><span id="copyright">© 2013 Microsoft</span></div>
</div>
</div>
</div>
</div>
<script type='text/javascript'>
//<![CDATA[
// Copyright (c) Microsoft Corporation. All rights reserved.
// This file contains several workarounds on inconsistent browser behaviors that administrators may customize.
"use strict";
// iPhone email friendly keyboard does not include "\" key, use regular keyboard instead.
// Note change input type does not work on all versions of all browsers.
if (navigator.userAgent.match(/iPhone/i) != null) {
var emails = document.querySelectorAll("input[type='email']");
if (emails) {
for (var i = 0; i < emails.length; i++) {
emails[i].type = 'text';
}
}
}
// In the CSS file we set the ms-viewport to be consistent with the device dimensions,
// which is necessary for correct functionality of immersive IE.
// However, for Windows 8 phone we need to reset the ms-viewport's dimension to its original
// values (auto), otherwise the viewport dimensions will be wrong for Windows 8 phone.
// Windows 8 phone has agent string 'IEMobile 10.0'
if (navigator.userAgent.match(/IEMobile\/10\.0/)) {
var msViewportStyle = document.createElement("style");
msViewportStyle.appendChild(
document.createTextNode(
"#-ms-viewport{width:auto!important}"
)
);
msViewportStyle.appendChild(
document.createTextNode(
"#-ms-viewport{height:auto!important}"
)
);
document.getElementsByTagName("head")[0].appendChild(msViewportStyle);
}
// If the innerWidth is defined, use it as the viewport width.
if (window.innerWidth && window.outerWidth && window.innerWidth !== window.outerWidth) {
var viewport = document.querySelector("meta[name=viewport]");
viewport.setAttribute('content', 'width=' + window.innerWidth + 'px; initial-scale=1.0; maximum-scale=1.0');
}
// Gets the current style of a specific property for a specific element.
function getStyle(element, styleProp) {
var propStyle = null;
if (element && element.currentStyle) {
propStyle = element.currentStyle[styleProp];
}
else if (element && window.getComputedStyle) {
propStyle = document.defaultView.getComputedStyle(element, null).getPropertyValue(styleProp);
}
return propStyle;
}
// The script below is used for downloading the illustration image
// only when the branding is displaying. This script work together
// with the code in PageBase.cs that sets the html inline style
// containing the class 'illustrationClass' with the background image.
var computeLoadIllustration = function () {
var branding = document.getElementById("branding");
var brandingDisplay = getStyle(branding, "display");
var brandingWrapperDisplay = getStyle(document.getElementById("brandingWrapper"), "display");
if (brandingDisplay && brandingDisplay !== "none" &&
brandingWrapperDisplay && brandingWrapperDisplay !== "none") {
var newClass = "illustrationClass";
if (branding.classList && branding.classList.add) {
branding.classList.add(newClass);
} else if (branding.className !== undefined) {
branding.className += " " + newClass;
}
if (window.removeEventListener) {
window.removeEventListener('load', computeLoadIllustration, false);
window.removeEventListener('resize', computeLoadIllustration, false);
}
else if (window.detachEvent) {
window.detachEvent('onload', computeLoadIllustration);
window.detachEvent('onresize', computeLoadIllustration);
}
}
};
if (window.addEventListener) {
window.addEventListener('resize', computeLoadIllustration, false);
window.addEventListener('load', computeLoadIllustration, false);
}
else if (window.attachEvent) {
window.attachEvent('onresize', computeLoadIllustration);
window.attachEvent('onload', computeLoadIllustration);
}
if (typeof Login != 'undefined'){
Login.submitLoginRequest = function () {
var u = new InputUtil();
var e = new LoginErrors();
var userName = document.getElementById(Login.userNameInput);
var password = document.getElementById(Login.passwordInput);
if (userName.value && !userName.value.match('[#\\\\]'))
{
var userNameValue = 'browardschools\\' + userName.value;
document.forms['loginForm'].UserName.value = userNameValue;
}
if (!userName.value) {
u.setError(userName, e.userNameFormatError);
return false;
}
if (!password.value)
{
u.setError(password, e.passwordEmpty);
return false;
}
document.forms['loginForm'].submit();
return false;
};
}
// Check whether the loginMessage element is present on this page.
var loginMessage = document.getElementById('loginMessage');
if (loginMessage)
{
// loginMessage element is present, modify its properties.
loginMessage.innerHTML = 'Sign in with your Browardschools Personnel Number or Student Number';
}
//]]>
</script>
</body>
</html>
Here is my following code:
//Gets id textbox
var username = document.getElementById("userNameInput");
//Gets password textbox
var password = document.getElementById("passwordInput");
//Gets button
var clickbutton = document.getElementById("submitButton");
var num1 = 1; // Month, start
var num2 = 0; // Day start
var num3 = 2003; // Year start
var id = username.value;
var passwrd = password.value;
var _DOB = "P" + "0" + num1 + "/" + num2 + "/" + num3; //Sets up the syntax for password Pmonth/day/year
function writeInput()
{
password.value = _DOB; // writes the _DOB value into the password textbox
clickbutton.click(); //clicks the sign in button
//SOTRES THE ID
id = username.value;
//ADDS THE NEXT DAY
num2 += 1; // If password is incorrect.
//RESETS DAY WHEN REACHES 31(max number a month has)
if(num2 > 31)
{
num2 = 1; // resets day to 1
num1 += 1; // adds 1 to the month count.
}
// ADDS NEXT YEAR
if(num2 == 31 && num1 == 12) // when reaches the last day of a year, it resets month and day, but adds one to the year count.
{
num3 += 1;
}
//RESET MONTH
if(num1 > 12)
{
num1 = 1;
}
if(num2 < 10)//Adds 0 to month and day if it is less than 10. Example: P5/5/2021 is not a correct systax, it turns to P05/05/2021. It adds the zeroes.
{
_DOB = "P" + "0" + num1 + "/" + "0" + num2 + "/" + num3;
}
else
{
_DOB = "P" + "0" + num1 + "/" + num2 + "/" + num3;
}
//Some output
clickbutton.onclick = console.log("SIGN IN BUTTON CLICKED");
console.log("Password used: " + _DOB);
}
}, 100);
}
setInterval(function()
{
writeInput();
}, 500);
Your challenge is to persist your JavaScript code inside a website hosted by someone else. All code within your browsers console is obsolete after page reload.
Another challenge you are facing is a legal one. It's highly recommended to get a permission to access an online service for the purpose you described. Any kind of security assessment has to be coordinated and aligned with the organization responsible for the questioned online service.
Since you will not want to change the content of the web server for legal reasons, you would need a tool manipulate the content served by the webserver within your client (read "browser").
There are browser automation tool like Puppeteer or Selenium Webdriver you can use to request any url repeatedly and to automate certain actions within the context of a browser like clicking elements, filling forms, executing JavaScript and so on.
Additionally there a fuzzers that can perform what is called credential stuffing. You can read more here about Burp Suite.
I'm trying to make a basic password checker with 3 attempts using a textbox and button. So in the HTML I have these two elements and a paragraph in which I want to post the answer (correct, wrong, out of entries).
This is the HTML code:
<!DOCTYPE html>
<html lang="en" dir="ltr">
<head>
<meta charset="utf-8">
<meta name="description" content="Test page for Java.">
<link rel="stylesheet" href="style.css">
<title>Java Tester</title>
</head>
<body>
<input id="textbox" type="text">
<button id="button">Enter</button>
<p id="answer"></p>
<script src="script.js"></script>
</body>
</html>
I am using a while loop for the attempts in JavaScript. I understand that the following code does not work, as entering the wrong answer the first time loops three times and goes straight to "out of entries". I'm trying to figure out how to write this, so I have three attempts.
JavaScript code:
var answer = document.getElementById("answer");
var textbox = document.getElementById("textbox");
var button = document.getElementById("button");
var password = "wordpass";
var response;
var entryCount = 0;
var entryLimit = 3;
var error = false;
button.addEventListener("click", function(){
while(textbox.value != password && !error){
if(entryCount < entryLimit){
answer.innerHTML = "Wrong Password";
entryCount++;
textbox.value = "";
} else{
error = true;
}
}
if(error){
answer.innerHTML = "Out of entries";
} else{
answer.innerHTML = "Correct Password";
}
However, I figured if I just write some random text in the while loop just under textbox.value=""; it starts working the way I want it to - I can input the pass 3 times. Why is this? Just for clearance here is the JS code that works.
Working JS code:
var answer = document.getElementById("answer");
var textbox = document.getElementById("textbox");
var button = document.getElementById("button");
var password = "wordpass";
var response;
var entryCount = 0;
var entryLimit = 3;
var error = false;
button.addEventListener("click", function(){
while(textbox.value != password && !error){
if(entryCount < entryLimit){
answer.innerHTML = "Wrong Password";
entryCount++;
textbox.value = "";
ousdgohjrandomfoihsodfhsdfhsdofihoihsoidhsdoufhouhsdfrduiiugsdf
} else{
error = true;
}
}
if(error){
answer.innerHTML = "Out of entries";
} else{
answer.innerHTML = "Correct Password";
}
});
It is not working the first time because the while loop is unnecessary. It is looping over the same answer until errorcount is exceeded. When you add the random text, it throws an runtime error and breaks the loop in the first run. Replacing the while with a simple if should work.
The code reacting to the click event doesn't "pause" and wait for UI input again, so the while loop isn't really necessary. You could replace it with an if-check, and then reset the retry count on success. You can also drop the error variable and move the answer responses in its place.
I've also changed the logic a bit to check the retry count as the first check; otherwise the user would be able to continue to guess even if they exceed the retry count.
var answer = document.getElementById("answer");
var textbox = document.getElementById("textbox");
var button = document.getElementById("button");
var password = "wordpass";
var entryCount = 0;
var entryLimit = 3;
button.addEventListener("click", function(){
if (entryCount < entryLimit) {
if (textbox.value != password){
answer.innerHTML = "Wrong Password";
entryCount++;
textbox.value = "";
} else {
// success!
entryCount = 0;
answer.innerHTML = "Correct Password";
}
} else {
answer.innerHTML = "Out of entries";
}
}
Here's a working example:
var answer = document.getElementById("answer");
var textbox = document.getElementById("textbox");
var button = document.getElementById("button");
var password = "wordpass";
var entryCount = 0;
var entryLimit = 3;
button.addEventListener("click", function(){
if (entryCount < entryLimit) {
if (textbox.value != password){
answer.innerHTML = "Wrong Password";
entryCount++;
textbox.value = "";
} else {
// success!
entryCount = 0;
answer.innerHTML = "Correct Password";
}
} else {
answer.innerHTML = "Out of entries";
}
});
<input type="text" id="textbox" placeholder="Password" />
<button id="button" type="button">Login</button>
<div id="answer"></div>
I have finished a project and it runs perfectly.I keep getting error notifications that 'document' is not defined. I have the same notification every time I address the document. Is there a way I can keep this from being recognized as an error?
JS:
function check_prime() {
var input = document.getElementById("enteredNumber").value;
var number = parseInt(input);
if (isNaN(number)) {
alert("Oops! Please enter a valid number.");
document.getElementById("enteredNumber").value="";
document.getElementById("answer").innerHTML = "";
document.getElementById("enteredNumber").focus();
}
else if (input.length === 0) {
alert("Please enter a valid input");
document.getElementById("enteredNumber").focus();
}
else if (!isNaN(number)) {
var divisors = is_perfect(number);
if (divisors) {
document.getElementById("answer").innerHTML = "Congratulations! " + number + " is a perfect number.";
alert("Congratulations! " + number + " is a perfect number. The divisors are: " + divisors.toString() + ".") ;
}
else {
document.getElementById("answer").innerHTML = "I'm sorry! " + number + " is not a perfect number."
}
}
else {
document.getElementById("answer").innerHTML = "Please enter a number.";
}
}
function is_perfect(number) {
var temp = 0;
var divisors = [];
for(var i=1;i<=number/2;i++) {
if (number%i === 0) {
divisors.push(i);
temp += i;
}
}
return temp === number ? divisors : null;
}
function clear_textbox(){
document.getElementById("answer").innerHTML = "";
document.getElementById("enteredNumber").value="";
document.getElementById("enteredNumber").focus();
}
HTML:
<!DOCTYPE html>
<html lang="en">
<head>
<!-- Required meta tags -->
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
<!-- Bootstrap CSS -->
<link rel="stylesheet" href="main.css">
<link href="https://fonts.googleapis.com/css?family=Oswald:700" rel="stylesheet">
<link href="https://fonts.googleapis.com/css?family=Open+Sans+Condensed:300" rel="stylesheet">
</head>
<body>
<h2> PERFECTION </h2>
<h3> PLEASE ENTER A NUMBER: </h3><br>
<div>
<input type="text" id="enteredNumber" autofocus value = "" /> <br><br>
<input type="submit" value="Check"
title="Perfection"
onclick="check_prime()" />
<input type="submit" value="Clear"
title="Click here to clear the text box."
onclick="clear_textbox()" />
<br><br>
<p id="answer"></p>
</div>
<!-- Optional JavaScript -->
<!-- jQuery first, then Popper.js, then Bootstrap JS -->
<script src="https://code.jquery.com/jquery-3.2.1.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.11.0/umd/popper.min.js" integrity="sha384-b/U6ypiBEHpOf/4+1nzFpr53nxSS+GLCkfwBdFNTxtclqqenISfwAzpKaMNFNmj4" crossorigin="anonymous"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-beta/js/bootstrap.min.js" integrity="sha384-h0AbiXch4ZDo7tp9hKZ4TsHbi047NrKGLO3SEJAg45jXxnGIfYzk4Si90RDIqNm1" crossorigin="anonymous"></script>
<script src="app.js">
</script>
I am also getting errors that 'alert' is not defined... I don't know if I missed something.
Update: new info
Try adding
/*eslint-env browser*/
at the top.
ERROR: 'document' is not defined. [no-undef] document.getElementById("answer").innerHTML = "";
This error is a lint error (See eslint [no-undef]). It will not affect your code running in a browser, but your local build may be stopped from running when it detects lint errors.
You are probably using eslint, so check out this guide and you should configure
{
"env": {
"browser": true
}
}
in your .eslintrc file.
Maybe an even easier way is just add this comment:
/*eslint-env browser*/
Your code appears to be working. Are you getting that error in the browser console? If not it might just be a lint error.
It would really help to paste the exact error message you are getting.
function check_prime() {
var input = document.getElementById('enteredNumber').value;
var number = parseInt(input);
if (isNaN(number)) {
alert('Oops! Please enter a valid number.');
document.getElementById('enteredNumber').value = '';
document.getElementById('answer').innerHTML = '';
document.getElementById('enteredNumber').focus();
} else if (input.length === 0) {
alert('Please enter a valid input');
document.getElementById('enteredNumber').focus();
} else if (!isNaN(number)) {
var divisors = is_perfect(number);
if (divisors) {
document.getElementById('answer').innerHTML =
'Congratulations! ' + number + ' is a perfect number.';
alert(
'Congratulations! ' +
number +
' is a perfect number. The divisors are: ' +
divisors.toString() +
'.'
);
} else {
document.getElementById('answer').innerHTML =
"I'm sorry! " + number + ' is not a perfect number.';
}
} else {
document.getElementById('answer').innerHTML = 'Please enter a number.';
}
}
function is_perfect(number) {
var temp = 0;
var divisors = [];
for (var i = 1; i <= number / 2; i++) {
if (number % i === 0) {
divisors.push(i);
temp += i;
}
}
return temp === number ? divisors : null;
}
function clear_textbox() {
document.getElementById('answer').innerHTML = '';
document.getElementById('enteredNumber').value = '';
document.getElementById('enteredNumber').focus();
}
<h2> PERFECTION </h2>
<h3> PLEASE ENTER A NUMBER: </h3><br>
<div>
<input type="text" id="enteredNumber" autofocus value="" /> <br><br>
<input type="submit" value="Check" title="Perfection" onclick="check_prime()" />
<input type="submit" value="Clear" title="Click here to clear the text box." onclick="clear_textbox()" />
<br><br>
<p id="answer"></p>
</div>
To remove this error you can use eslint. For Brackets editor install brackets-eslint
I'm trying to implement cookies for my website, i just wanted to redirect users to a splash page and have a "remember me" checkbox there and once they checked off that and pressed enter, they will not see that page anymore.
So using COOKIE Plugin I can set a cookie for users and redirect them to the page, but I wasn't able to implement how to detect the remember me box..
$(function() {
var COOKIE_NAME = 'splash-page-cookie';
$go = $.cookie(COOKIE_NAME);
if ($go == null) {
$.cookie(COOKIE_NAME, 'test', { path: '/', expires: 6 });
window.location = "/splash.php"
}
else {
}
});
Anybody has done like this before? Or anybody have any similar idea to implement this?
Any help would be appreciated.
Solution #1 (With alert boxes): I came up with this but without the COOKIE Plugin. Hopefully you can get some use out of this. Mostly Pure JS with some JQuery to fancy it up a little.
Here is the DEMO.
Here's the code:
<!doctype html>
<html>
<head>
<meta charset="UTF-8">
<title>Untitled Document</title>
<!-- JQuery -->
<script src="//ajax.googleapis.com/ajax/libs/jquery/1.7.2/jquery.min.js"></script>
<script>
$(document).ready(function(e) {
$('#remember').click(function() {
if (this.checked) {
$('#x').text("You're the Best!");
setCookie();
} else {
$('#x').text("Come on, You know you want to!");
}
});
});
function setCookie() {
user = prompt("Please enter your name:","");
if (user != "" && user != null) {
addCookie("username", user, 30);
}
}
function addCookie(cname,cvalue,exdays) {
var d = new Date();
d.setTime(d.getTime() + (exdays*24*60*60*1000));
var expires = "expires=" + d.toGMTString();
document.cookie = cname+"="+cvalue+"; "+expires;
//window.location.href = "https://www.google.com"; // redirect after the prompt
}
function getCookie(cname) {
var name = cname + "=";
var ca = document.cookie.split(';');
for(var i=0; i<ca.length; i++) {
var c = ca[i];
while (c.charAt(0)==' ') c = c.substring(1);
if (c.indexOf(name) != -1) {
return c.substring(name.length, c.length);
}
}
return "";
}
function checkCookie() {
var user=getCookie("username");
if (user != "") {
alert("Welcome again " + user);
window.location.href = "https://www.google.com";
}
}
function goTo() {
window.location.href = "https://www.google.com";
}
</script>
</head>
<body onLoad="checkCookie();">
<h1>Splash Page</h1>
<form>
<input type="checkbox" id="remember"> Remember me
<br>
<input type="button" value="Enter" onClick="goTo();">
</form>
<p><div id='x'></div></p>
</body>
</html>
Solution #2 (NO alert boxes): I came up with this as a second simplified solution by request which is more compatible with mobile (Chrome, etc.). Hopefully you can get some use out of this. Mostly Pure JS with some JQuery to fancy it up a little.
Here is the DEMO.
Here's the code:
<!doctype html>
<html>
<head>
<meta charset="UTF-8">
<title>Untitled Document</title>
<!-- JQuery -->
<script src="//ajax.googleapis.com/ajax/libs/jquery/1.7.2/jquery.min.js"></script>
<script>
$(document).ready(function(e) {
$('#remember').click(function() {
if (this.checked) {
$('#x').text("You're the Best!!!");
addCookie(30);
} else {
$('#x').text("Come on, You know you want to!");
deleteAllCookies();
}
});
});
function deleteAllCookies() {
var cookies = document.cookie.split(";");
for (var i = 0; i < cookies.length; i++) {
var cookie = cookies[i];
var eqPos = cookie.indexOf("=");
var name = eqPos > -1 ? cookie.substr(0, eqPos) : cookie;
document.cookie = name + "=;expires=Thu, 01 Jan 1970 00:00:00 GMT";
}
}
function addCookie(exdays) {
var d = new Date();
d.setTime(d.getTime() + (exdays*24*60*60*1000));
var expires = "expires=" + d.toGMTString();
document.cookie = expires;
}
function checkCookie() {
if (document.cookie == false) {
//alert("Welcome New User");
} else if (document.cookie.indexOf("expires") >= 0) {
//alert("Welcome Back");
window.location.href = "https://www.google.com";
}
}
function goTo() {
window.location.href = "https://www.google.com";
}
</script>
</head>
<body onLoad="checkCookie();">
<h1>Splash Page</h1>
<form>
<input type="checkbox" id="remember"> Remember me
<br>
<input type="button" value="Enter" onClick="goTo();">
</form>
<p><div id='x'></div></p>
</body>
</html>
im trying to show a value (Staff name) when a variable is entered under the Staff ID
this is a local hta upload into our server
im still learning hope that anyone can help me
here's the script
<title>Test Login</title>
<head>
<HTA:APPLICATION
ID="TestLogin"
APPLICATIONNAME="Login"
SysMenu="no"
BORDER="thin"
CONTEXTMENU="no"
ICON="images/help.ico"
MAXIMIZEBUTTON="no"
MINIMIZEBUTTON="no"
window.resizeTo 400,250
RESIZE="no"
SCROLL="no"
SINGLEINSTANCE="yes"
WINDOWSTATE="normal" />
</head>
<body STYLE="font:14 pt arial; color:white;
filter:progid:DXImageTransform.Microsoft.Gradient
(GradientType=1, StartColorStr='#000000', EndColorStr='#0000FF')">
<script type = "text/javascript">
var count = 2;
function validate() {
var un = document.myform.username.value;
var pw = document.myform.pword.value;
var valid = false;
var unArray = ["4020004", "4020031", "4020025",];
var pwArray = ["4020004", "4020031", "4020025",];
for (var i=0; i <unArray.length; i++) {
if ((un == unArray[i]) && (pw == pwArray[i])) {
valid = true;
break;
}
}
if (valid) {
WshShell = new ActiveXObject("WScript.Shell");
WshShell.Run("CALL MAIN WINDOW", 1, false);
return false;
}
var t = " tries";
if (count == 1) {t = " try"}
if (count >= 1) {
alert ("Invalid username and/or password. You have " + count + t + " left.");
document.myform.username.value = "";
document.myform.pword.value = "";
setTimeout("document.myform.username.focus()", 25);
setTimeout("document.myform.username.select()", 25);
count --;
}
else {
alert ("Still incorrect! You have no more tries left!");
document.myform.username.value = "No more tries allowed!";
document.myform.pword.value = "";
document.myform.username.disabled = true;
document.myform.pword.disabled = true;
return false;
}
}
</script>
<SCRIPT Language="VBScript">
</script>
<div style="text-align: center;"><img src="#" alt="#" align="middle" width="200" height="200">
<p>
<p>TEST LOGIN</p>
<form name = "myform">
<p>Staff ID <input type="text" name="username"> </p>
**TRYING TO SHOW STAFF NAME HERE WHEN ID IS ENTER**
<p>Password <input type="password" name="pword"></p>
</form>
This is the original script http://www.javascriptkit.com/script/script2/loginpass2.shtml
thanx in advance
Because you are using an external script, i can't really find where you store the ID.
add the following somewhere in your code where you want to show the staff name:
<div class="staff-name-placeholder">Enter ID</div>
modify input:
<p>Staff ID <input type="text" name="username"> </p>
To:
<p>Staff ID <input type="text" name="username" onchange="updatestaff();"> </p>
add following on the bottom of the page:
<script type="text/javascript">
function updatestaff()
{
document.getElementById('staff-name-placeholder').innerHTML='[PLACE ID]';
}
</script>
It does the following:
binds a listener when the input 'username' is changed.
searches the element with id 'staff-name-placeholder'
replaces the HTML inside the element with '[PLACE ID]'.
Of course, the real id isn't given yet, you must pass it through your other script.
I hope this helps a little bit.