How can I find out if a text input is a certain text?
I tried this
<script>
var b = document.getElementById('button')
var u = document.getElementById('username')
var p = document.getElementById('password')
var bannedUsers = ["user1012"];
b.onclick = function() {
if(u.value.length <= 20 && p.value.length >= 6 && u.value.length >= 3 && !u.value === bannedUsers) {
location.href = "";
};
if(u.value.length > 20) {
return alert('Username needs to be below 20 characters.')
} else if(u.value.length < 3) {
return alert('Username needs to be above 2 characters')
}
if(p.value.length < 6) {
return alert('Password needs to be over 6 characters.')
}
if(u.value === bannedUsers) {
return alert('That username is banned.')
}
}
</script>
But it ended up just taking me to the page instead of saying "This username is banned"
You need to use the includes method.
bannedUsers.includes(u.value)
what you're doing right now is checking if the string is the array bannedUsers, translating to this: 'user1012' === '[object Object]'
You can use the Array.prototype.includes method to test if a given value is in an array. includes will return a boolean true or false.
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/includes
if (bannedUsers.includes(u.value) {
return alert('That username is banned.')
}
Related
This is the code I wrote, it returns the alert every time even if the password is within the range(4-12).
function PasswordCheck() {
var str = document.getElementById("Password");
if (str > 4 && str < 12) {
return true;
} else {
alert("invalid password, your password needs to have 4-12 letters");
return false;
}
}
You need to retrieve the text in your element with value.
Then you want to check the length of your string with the length property of the str string.
function PasswordCheck() {
var str = document.getElementById("Password").value;
if (str.length > 4 && str.length < 12) {
return true;
} else {
alert("invalid password, your password needs to have 4-12 letters");
return false;
}
}
This is because getElementById returns an Element object and not the value directly.
In one of my textbox i need to enter only multiple url or multiple text at a time,not both.
So while i use the regular expression given below the domain name "google.com" will satisfy the condition of text.But i need to return false for this type of entry.Can anyone please suggest an idea?
jQuery.validator.addMethod("newway", function(value, element) {
var testarray = ['.....'];
var url_count = 0;
var text_count = 0;
for(var k in testarray){
if(/^(http:\/\/|https:\/\/)?((([\w-]+\.)+[\w-]+)|localhost)(\/[\w- .\/?%&=]*)?/i.test(testarray[k]))
{
console.log("url");
url_count++;
}
else{
if(/^[a-zA-Z+,:;%()]+$/.test(testarray[k])){
console.log("text");
text_count++;
}
}
}
if((url_count==0 && text_count > 0) || (url_count >0 && text_count == 0)){
if((url_count==testarray.length) || (text_count==testarray.length)){
return true
}
else{
return false
}
}else{
return false
}
}, "Please enter url or text");
This is my first webpage in which I prompt the user for a phone number to add to a Do Not Call List database. Everything is working so far but I need to add the following, which I can do following the advice in this answer
stripping the input from all characters except digits
validating that the resulting string is 10 digits long
Then, when telling the user that the number was added to the list, I want to present it in the (999) 999-9999 format.
Where should I add all that code? Iside the #{ } block? In JavaScript? Razor?
Check phone number
function IsNumber(s) {
var i, currentCharacter;
for (i = 0; i < s.length; i++) {
// Check that current character is number.
currentCharacter = s.charAt(i);
if (((currentCharacter < "0") || (currentCharacter > "9"))) {
return false;
}
}
// All characters are numbers.
return true;
}
function TestInternationalPhone(strPhone) {
var bracket = 3,
openBracket,
phoneNumberOnly,
phoneNumberDelimiters = "()- ",
validWorldPhoneChars = phoneNumberDelimiters + "+",
minDigitsInIPhoneNumber = 10;
strPhone = SOS.StringHelper.Trim(strPhone);
if (strPhone.length === 0) {
return false;
}
if (strPhone.indexOf("+") > 1) {
return false;
}
if (strPhone.indexOf("-") != -1) {
bracket = bracket + 1;
}
if (strPhone.indexOf("(") != -1 && strPhone.indexOf("(") > bracket) {
return false;
}
openBracket = strPhone.indexOf("(");
if (strPhone.indexOf("(") != -1 && strPhone.charAt(openBracket + 2) != ")") {
return false;
}
if (strPhone.indexOf("(") == -1 && strPhone.indexOf(")") != -1) {
return false;
}
phoneNumberOnly = SOS.StringHelper.StripCharsInBag(strPhone, validWorldPhoneChars);
return (IsNumber(phoneNumberOnly) && phoneNumberOnly.length >= minDigitsInIPhoneNumber);
}
I am using a jQuery script and the main part is below. It allows me to select up to 4 items. Until there are 5 selections made, there is an error message.
How can I change this so that the error message appears if the choices are less than 2 and more than 5, and the success message is shown when the choices are between them?
if ($(this).multiselect("widget").find("input:checked").length > 5) {
warning.addClass("error").removeClass("success").html("You can only check two checkboxes!");
return false;
} else {
warning.addClass("success").removeClass("error").html("Check a few boxes.");
}
You can get the number of checked items in to a local variable and then use a compound if statement that does multiple comparisons on it:
var checkedItemsLength = $(this).multiselect("widget").find("input:checked").length;
if(checkItemsLength < 2 || checkItemsLength > 5 ) {
warning.addClass("error").removeClass("success").html("You can only check two checkboxes!");
return false;
} else {
warning.addClass("success").removeClass("error").html("Check a few boxes.");
}
function doSomeChecking() {
// assuming 'warning is a reference to some div or span
var warning = $('#warning');
var numChecked = $(this).multiselect("widget").find("input:checked").length;
if (numChecked > 5) {
warning.addClass("error").removeClass("success").html("You cannot check more than five boxes!");
return false;
} else if (numChecked < 2) {
warning.addClass("error").removeClass("success").html("You must check at least two boxes.");
return false;
}
warning.addClass("success").removeClass("error").html("Life is good.");
return true;
}
var selections = $(this).multiselect("widget").find("input:checked");
if(selections.length < 2) {
warning.addClass("error").removeClass("success").html("You have to check atleast two checkboxes!");
return false;
} else if (selections.length > 5) {
warning.addClass("error").removeClass("success").html("You can not check more then five checkboxes!");
return false;
} else {
warning.addClass("success").removeClass("error").html("Check a few boxes.");
}
if(foo < 2 || foo > 5){
//do something
}else {
//do something else
}
Not getting any errors in Aptana, so something I'm doing probably doesn't make sense. Basically, I am getting the value from a form and checking it against a regex. If the new checked variable isn't empty then I output to a different div that it is valid, and that it is not valid if the variable is empty.
<script type="text/javascript">
var age_regex=/(1[8-9]|2[0-9]|3[0-5])/;
var error_box= document.getElementById('error_box');
function checkAge(x){
var age = document.getElementById(x).value;
var checked_age = test.age_regex(age);
if (checked_age.value != "")
error_box.innerHTML = "Correct!";
else {
error_box.innerHTML = "Incorrect!";
}
}
</script>
Why regex for age ? How about this :
function checkAge(str) {
if(parseInt(str, 10) != str) {
return false;
}
if(parseInt(str, 10) < 18 || parseInt(str, 10) > 35)
{
return false;
}
}