This is my simple html code. I included javascript inside this html file.I would like to perform validation on name like no empty field and data format validation but it is not working. Can some one please help me to get rid of this
<html>
<head>
<title>Aptitude Competition Online</title>
<link rel="stylesheet" type="text/css" href="index.css">
<script type="text/javascript">
function validate()
{
var nam = document.forms[0].name.value;
if(nam == "")
{
alert("Name should be filled out");
document.getElementById("name").focus;
return false;
}
else {
return true;
}
}
</script>
</head>
<body>
<div id="header1">
<font id="font1">Aptitude Quiz</font>
</div>
<div id="bgr">
<div id="emal">
<font style="position:absolute;top:16px;left:100px;font-size:20px;">Welcome to Aptitude Quiz</font><br><br><br
<form name="form">
Name : <input type="text" name="name" id="name"><br><br>
<input name="Participate" type="button" value="Participate" onClick="validate()" >
</form>
</div>
</div>
<div id="footer">
Contact Us : gmail#name.com
</div>
</body>
</html>
You have a mistake in your HTML code. You forgot to close a <br> tag before <form name='form'>
Also, "focus" is a method, not a property. I have added that as well
Here is the corrected code.
<html>
<head>
<title>Aptitude Competition Online</title>
<link rel="stylesheet" type="text/css" href="index.css">
<script type="text/javascript">
function validate() {
var nam = document.forms[0].name.value;
if (nam == "") {
alert("Name should be filled out");
document.getElementById("name").focus();
return false;
} else {
return true;
}
}
</script>
</head>
<body>
<div id="header1">
<font id="font1">Aptitude Quiz</font>
</div>
<div id="bgr">
<div id="emal">
<font style="position:absolute;top:16px;left:100px;font-size:20px;">Welcome to Aptitude Quiz</font>
<br>
<br>
<br> <form name="form"> Name :
<input type="text" name="name" id="name">
<br>
<br>
<input name="Participate" type="button" value="Participate" onClick="validate()">
</form>
</div>
</div>
<div id="footer">
Contact Us : gmail#name.com
</div>
</body>
</html>
Related
Here I'm trying to execute the following code but it throws the above error in console log in website page, I am unable to identify the error .
I have coded this webpage in such a way that it should show an error like "enter the user name" and "enter the password" whenever the input boxes are left empty but instead of this it is showing an uncaught type error. Kindly help me to find the solution.
my github code link is:https://github.com/harish-123445/login-form-using-html-css-javascript
function vfun(){
var uname=document.forms["myform"]["uname"].value;
var pword=document.forms["myform"]["pword"].value;
if(uname==null || uname=="" ){
document.getElementById("errorBox").innerHTML =
"enter the user name";
return false;
}
if(pword==null || pword==""){
document.getElementById("errorBox").innerHTML =
"enter the password";
return false;
}
if (uname != '' && pword != '' ){
alert("Login successfully");
}
}
<!DOCTYPE html>
<html >
<head>
<title>sign in form</title>
<link rel="stylesheet" type="text/css" href="style.css">
<script type="text/javascript" src="js.js"></script>
<body>
<div class="box">
<img src="user.png" class="user">
<h1 >LOGIN HERE</h1>
<form class="myform" onsubmit= "return vfun()">
<p>USERNAME </p>
<input type="text" name="uname" placeholder="enter username" >
<p>PASSWORD </p>
<input type="password" name="pword" placeholder="enter password">
<div id="errorBox"></div>
<input type="submit" name="" value="login">
<br><br>
<a href="register.html" >Register for new user</a>
</form>
</div>
</body>
</head>
</html>
I have edited your code. I have called your username and password using getElementById and your two error boxes with different id names and now it is working fine.
function vfun(){
var uname=document.getElementById("name").value;
var psword=document.getElementById("passw").value;
if(uname==null || uname=="" ){
document.getElementById("errorBox2").innerHTML =
"enter the user name";
return false;
}
if(psword==null || psword==""){
document.getElementById("errorBox").innerHTML =
"enter the password";
return false;
}
if (uname != '' && pword != '' ){
alert("Login successfully");
}
}
<!DOCTYPE html>
<html >
<head>
<title>sign in form</title>
<link rel="stylesheet" type="text/css" href="style.css">
<script type="text/javascript" src="js.js"></script>
<body>
<div class="box">
<img src="user.png" class="user">
<h1 >LOGIN HERE</h1>
<form class="myform" onsubmit= "return vfun()">
<p>USERNAME </p>
<input type="text" name="uname" id="name"
placeholder="enter username" >
<div id="errorBox2"></div>
<p>PASSWORD </p>
<input type="password" name="pword" id="passw"
placeholder="enter password">
<div id="errorBox"></div>
<input type="submit" name="" value="login">
<br><br>
<a href="register.html" >Register for new user</a>
</form>
</div>
</body>
</head>
</html>
Today I am going to use JavaScript to do a validation of the registration page, but after an afternoon of verification, the function can be called. When the test pop-up window is added at the beginning of the function, the pop-up window pops up correctly, but the verification function in the function is always unresponsive. Ask for the forum's amnesty, where is the problem, thank you! ! !
I added a test popup statement to the script and it succeeded. But other functions don't respond.
<%# page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>注册界面</title>
<link rel="stylesheet" type="text/css" href="css/register.css">
<script type="text/javascript">
window.alert("test");
function checkRegisterINfo(form) {
/*判断姓名格式是否正确*/
var RegisterNameCheck = document.getElementById("nameId").value;
if (RegisterNameCheck = "") {
window.alert("姓名不能为空！");
return false;
} else {
var rightName = /[\u4E00-\u9FA5]{2,16}/;
if (rigntName.test(RegisterNameCheck) == true) {} else {
window.alert("您输入的姓名不正确！");
return false;
}
}
/*判断密码是否规范*/
var RegisterPwdCheck = document.getElementById("pwdId").value;
var rightPwd = /^(\w){6,20}$/;
if (rightPwd.test(RegisterPwdCheck) == false) {
window.alert("密码只能输入6-20个字母、数字、下划线");
return false;
}
/*判断密保问题格式是否正确*/
var RegisterQuestionCheck = document.getElementById("questionId").value;
var rightQuestion = /[\u4E00-\u9FA5]{1,16}/;
if (!rightQuestion.test(RegisterQuestionCheck)) {
window.alert("密保问题支持1-16位汉字！");
return false;
}
/*判断密保答案格式是否正确*/
var RegisterAnswerCheck = document.getElementById("answerId").value;
var rightAnswer = /[\u4E00-\u9FA5]{1,50}/;
if (!rightAnswer.test(RegisterAnswerCheck)) {
window.alert("密保答案支持1-50位汉字！");
return false;
}
}
</script>
</head>
<body>
<div class="main">
<div class="title">
<span>用户注册</span>
</div>
<form name="registerForm" method="post" action="" onsubmit="return checkRegisterINfo(registerForm)">
<!--输入框-->
<div class="input-content">
<div>
<input type="text" autocomplete="off" id="nameId" placeholder="用户名" name="Registerusername" required/>
</div>
<div style="margin-top: 16px">
<input type="password" autocomplete="off" id="pwdId" placeholder="登录密码" name="Registerpassword" required maxlength="32" />
</div>
<div style="margin-top: 16px">
<input type="text" autocomplete="off" id="questionId" placeholder="密保问题" name="Registerquestion" required maxlength="32" />
</div>
<div style="margin-top: 16px">
<input type="text" autocomplete="off" id="answerId" placeholder="密保答案" name="Registeranswer" required maxlength="32" />
</div>
</div>
<!--登入按钮-->
<div style="margin-top: 105px">
<button type="submit" class="enter-btn">登录</button>
</div>
<div class="foor">
<div class="left"><span>忘记密码</span></div>
<div class="right"><span>用户登录</span></div>
</div>
</form>
</div>
</body>
</html>
So like I want to make an input field required when a checkbox is checked an 'not required' when it is unchecked...I've tried the following code but it was not working ...please help...
<form action="#">
<input id='req'><input type="submit"></form><input type="checkbox" onclick="req()" id="check">
<script>
function req(){
var req = document.getElementById("req");
var checkBox = document.getElementById("check");
if (checkBox.checked == true){
alert("checked")
req.required==true
} else {
alert("uncheck")
req.required==false
}
}
</script>
Give this a try:
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.1.2/css/bootstrap.min.css" integrity="sha384-Smlep5jCw/wG7hdkwQ/Z5nLIefveQRIY9nfy6xoR1uRYBtpZgI6339F5dgvm/e9B" crossorigin="anonymous">
<title>Ilan's Test</title>
</head>
<body>
<div class="container">
<div class="row">
<div class="col-lg-12">
<div id="results">
<form name="test" id="test" action="#" method="GET">
<div class="input-group">
<div class="form-check">
<input type="checkbox" class="form-check-input" id="cbox">
<label class="form-check-label" for="cbox">Make field required</label>
</div>
</div><br>
<div class="input-group">
<input type="text" id="tbox" class="form-control">
</div><br>
<button type="submit" id="sub" class="btn btn-primary">Submit</button><br>
<small><span class="status"></span></small>
</form>
</div>
</div>
</div>
</div>
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.1.2/js/bootstrap.min.js" integrity="sha384-o+RDsa0aLu++PJvFqy8fFScvbHFLtbvScb8AjopnFD+iEQ7wo/CG0xlczd+2O/em" crossorigin="anonymous"></script>
<script>
$(document).ready(function() {
// On click of checkbox
$('#cbox').click(function() {
// Check if it's checked
if ($(this).prop('checked')) {
// Add the required attribute to the text input
$('#tbox').attr('required', '');
// log our results and display a small indicator span status
console.log('input is now required');
$('.status').text('input is now required');
} else {
// If it isn't checked, remove the required attribute
$('#tbox').removeAttr('required');
// log our results and display a small indicator span status
console.log('input is no longer required');
$('.status').text('input is no longer required');
}
});
});
</script>
</body>
</html>
I coded an HTML form where I tried to validate it using javascript, However, the validation doesn't work. It should work on click of submit button. Everything looks fine! could not find the error! Please Help.
Below is the code for the page:
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Term Deposit Interest Calculator</title>
<link rel="stylesheet" href="css/style.css" media="screen" type="text/css" />
<script>
function validateform(){
var amount=document.myform.amount.value;
var years=document.myform.years.value;
var interst= document.myform.interst.value;
if (amount==null || amount==""){
alert("Amount can't be blank");
return false;
}else if (years==null || years==""){
alert("Years can't be blank");
return false;
}else if (interest==null || interest==""){
alert("Interest can't be blank");
return false;
}
}
</script>
</head>
<body>
<div class="card">
<h3>Term Deposit Interest Calculator</h3><br>
<form name = "myform" method="post"onsubmit="return validateform()">
<input type="text" name="amount" placeholder="Deposit Amount"><span id="num1"></span>
<input type="text" name="years" placeholder="Number Of Years"><span id="num2"></span>
<input type="text" name="interest" placeholder="Yearly Interst Rate"><span id="num3"></span>
<input type="submit" name="submit" class="my submit" value="Total Amount">
</form>
<div class="result">
</div>
</div>
</body>
</html>
<?php
if (!isset($amount7032)) { $amount7032 = ''; }
if (!isset($interest7032)) { $interest7032 = ''; }
if (!isset($years7032)) { $years7032 = ''; }
?>
You have written wrong form element name at below line
var interst= document.myform.interst.value;
it should be
var interest= document.myform.interest.value;
Basically because javascript was not able to find the form element and it was failing due to that.
I tried below code and its working:
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Term Deposit Interest Calculator</title>
<link rel="stylesheet" href="css/style.css" media="screen" type="text/css" />
<script>
function validateform(){
var amount=document.myform.amount.value;
var years=document.myform.years.value;
var interest= document.myform.interest.value;
if (amount==null || amount==""){
alert("Amount can't be blank");
return false;
}else if (years==null || years==""){
alert("Years can't be blank");
return false;
}else if (interest==null || interest==""){
alert("Interest can't be blank");
return false;
}
}
</script>
</head>
<body>
<div class="card">
<h3>Term Deposit Interest Calculator</h3><br>
<form name="myform" method="post" onsubmit="return validateform()">
<input type="text" name="amount" placeholder="Deposit Amount"><span id="num1"></span>
<input type="text" name="years" placeholder="Number Of Years"><span id="num2"></span>
<input type="text" name="interest" placeholder="Yearly Interst Rate"><span id="num3"></span>
<input type="submit" name="submit" class="my submit" value="Total Amount">
</form>
<div class="result">
</div>
</div>
</body>
</html>
So I am working on this project and I use a barcode scanner that has Windows CE 5.0 as its operating system. whenever I scan the barcode, the page automatically refreshes which should not. After it scans the barcode the user should be able to enter a number for quantity and after that the user will click the preview button which will take the user to another page. I've searched the net for solutions for this problem but still does not work. Help Please. Thank you.
<?php
include("webconfig.php");
ob_start();
session_start();
if(!isset($_SESSION["USER_CODE"]) || $_SESSION["ACTIVE"] == '0')
header("location:login.php");
$barcode = $_REQUEST["barcode"];
$item_desc = $_REQUEST["item_desc"];
$price = $_REQUEST["price"];
$quantity = $_REQUEST["txtQty"];
$pricef = number_format($price, 2);
$sql = ibase_query($conn, "SELECT * FROM ITEM_MASTER WHERE ITEM_CODE = '$barcode'") or die(ibase_errmsg());
$row = ibase_fetch_assoc($sql);
$imgname = $row['IMGNAME'];
?>
<!DOCTYPE html>
<html>
<head>
<link href="docs/css/metro.css" rel="stylesheet">
<link href="docs/css/metro-icons.css" rel="stylesheet">
<link href="docs/css/docs.css" rel="stylesheet">
<script src="docs/js/jquery-2.1.3.min.js"></script>
<script src="docs/js/metro.js"></script>
<script src="docs/js/docs.js"></script>
<script src="docs/js/prettify/run_prettify.js"></script>
<script src="docs/js/ga.js"></script>
<script src="js/jquery.js"></script>
<script src="js/jquery.ajaxcomplete.js"></script>
<script type="text/javascript" src="keyboard.js" charset="UTF-8"></script>
<link rel="stylesheet" type="text/css" href="keyboard.css">
<link rel="shortcut icon" href="_img/assigns-favicon.PNG">
<title>Albert Smith Signs - Warehouse Inventory System</title>
</head>
<body>
<div class="page-content">
<div class="align-center">
<div class="container">
<!-- Default -->
<div class="panel">
<div class="content">
<div class="grid">
<div class="row cells12">
<!-- Default -->
<div class="panel">
<div class="heading">
<span class="title">ENTER QUANTITY</span>
</div>
<div class="content">
<div class="grid">
<div class="row cells12">
<div class="cell colspan12">
<form onsubmit="return false;" method="post">
<label>Enter Quantity</label>
<br />
<div class="input-control text full-size" placeholder="Type search keyword here" data-role="input">
<!-- <input name="txtQty" class="keyboardInput" style="width: 225px;" type="text" value="1" autocomplete="off" /> -->
Scan Barcode
<input name="txtBarcode" id="ip" type="text" autofocus />
<br />
<br />
Enter Quantity
<input name="txtQty" id="next" type="text" />
</div>
<div class="cell colspan12">
<hr>
<br />
<br />
<br />
<br />
<br />
<input type="submit" onsubmit="return true;" name="btnPreview" style="width:80px; height:50px;" class="button primary rounded large-button" value="Preview" />
</div>
</div>
<?php
if(isset($_POST['btnPreview']) && $_POST['txtQty'] > 0)
{
$quantity = $_POST['txtQty'];
$barcode = $_POST['txtBarcode'];
$sql = "SELECT * FROM ITEM_MASTER WHERE ITEM_CODE = '$barcode'";
$query = ibase_query($conn, $sql) or die(ibase_errmsg());
if ($row = ibase_fetch_assoc($query))
{
$item_desc = $row['ITEM_DESC'];
$price = $row['COST'];
header("location:preview.php?barcode=$barcode&quantity=$quantity&item_desc=$item_desc&price=$price");
}
else{
echo "Barcode not found";
}
}
?>
</form>
<div class="cell colspan1">
</div>
</div>
</div>
</div>
</div><!-- panel -->
</div><!-- row cells12 -->
</div><!-- grid -->
</div><!-- content -->
</div><!-- panel -->
</div>
</div>
</div>
<script>
//$("#ip").focus();
/*var d = false;
$("#ip").on('change', function(){
//$("#ip").keyup(function(){
if(d == false){
$(".block").animate({"top": "-=50px"});
d = true;
}
var v = $(this).val();
$(".res").html("Search results for " + v );
$("#next").focus();
});*/
$("#ip").focus();
function init() {
key_count_global = 0; // Global variable
document.getElementById("ip").onkeypress = function() {
key_count_global++;
setTimeout("lookup("+key_count_global+")", 1000);//Function will be called 1 second after user types anything. Feel free to change this value.
}
}
window.onload = init; //or $(document).ready(init); - for jQuery
function lookup(key_count) {
if(key_count == key_count_global) { // The control will reach this point 1 second after user stops typing.
// Do the ajax lookup here.
$("#next").focus();
}
}
</script>
</body>
</html>
It is supposed to do that. But you can stop it this way:
<form method="post" name="form" id="form" onsubmit="return false;">
Add this to your FORM like you see above.
onsubmit="return false;"
That will stop it from refreshing the page.