I have a project in which I have to add a registration form and I want to to validate that the password and confirm fields are equal without clicking the register button.
If password and confirm password field will not match, then I also want to put an error message at side of confirm password field and disable registration button.
following is my html code..
<form id="form" name="form" method="post" action="registration.php">
<label >username :
<input name="username" id="username" type="text" /></label> <br>
<label >password :
<input name="password" id="password" type="password" /></label>
<label>confirm password:
<input type="password" name="confirm_password" id="confirm_password" />
</label>
<label>
<input type="submit" name="submit" value="registration" />
</label>
Is there any way to do this? Thanks in advance for any help.
This question is related to
javascript
jquery
ajax
try using jquery like this
$('input[type=submit]').click(function(e){
if($("#password").val() == "")
{
alert("please enter password");
return false;
}
});
also add this line in head of html
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.6/jquery.min.js"></script>
WITHOUT clicking the button you will have to listen to the change event of the input fields
var confirmField = document.getElementById("confirm_password");
var passwordField = document.getElementById("password");
function checkPasswordMatch(){
var status = document.getElementById("password_status");
var submit = document.getElementById("submit");
status.innerHTML = "";
submit.removeAttribute("disabled");
if(confirmField.value === "")
return;
if(passwordField.value === confirmField.value)
return;
status.innerHTML = "Passwords don't match";
submit.setAttribute("disabled", "disabled");
}
passWordField.addEventListener("change", function(event){
checkPasswordMatch();
});
confirmField.addEventListener("change", function(event){
checkPasswordMatch();
});
then add the status element to your html:
<p id="password_status"></p>
and set the submit button id to submit
... id="submit" />
hope this helps you
I think this example is good to check https://codepen.io/diegoleme/pen/surIK
I can quote code here
<form class="pure-form">
<fieldset>
<legend>Confirm password with HTML5</legend>
<input type="password" placeholder="Password" id="password" required>
<input type="password" placeholder="Confirm Password" id="confirm_password" required>
<button type="submit" class="pure-button pure-button-primary">Confirm</button>
</fieldset>
</form>
and
var password = document.getElementById("password")
, confirm_password = document.getElementById("confirm_password");
function validatePassword(){
if(password.value != confirm_password.value) {
confirm_password.setCustomValidity("Passwords Don't Match");
} else {
confirm_password.setCustomValidity('');
}
}
password.onchange = validatePassword;
confirm_password.onkeyup = validatePassword;
function check() {
if(document.getElementById('password').value ===
document.getElementById('confirm_password').value) {
document.getElementById('message').innerHTML = "match";
} else {
document.getElementById('message').innerHTML = "no match";
}
}
<label>password :
<input name="password" id="password" type="password" />
</label>
<label>confirm password:
<input type="password" name="confirm_password" id="confirm_password" onchange="check()"/>
<span id='message'></span>
HTML CODE
<input type="text" onkeypress="checkPass();" name="password" class="form-control" id="password" placeholder="Password" required>
<input type="text" onkeypress="checkPass();" name="rpassword" class="form-control" id="rpassword" placeholder="Retype Password" required>
JS CODE
function checkPass(){
var pass = document.getElementById("password").value;
var rpass = document.getElementById("rpassword").value;
if(pass != rpass){
document.getElementById("submit").disabled = true;
$('.missmatch').html("Entered Password is not matching!! Try Again");
}else{
$('.missmatch').html("");
document.getElementById("submit").disabled = false;
}
}
Compare the password/confirm-password input values on their change event and setCustomValidity accordingly:
function onChange() {_x000D_
const password = document.querySelector('input[name=password]');_x000D_
const confirm = document.querySelector('input[name=confirm]');_x000D_
if (confirm.value === password.value) {_x000D_
confirm.setCustomValidity('');_x000D_
} else {_x000D_
confirm.setCustomValidity('Passwords do not match');_x000D_
}_x000D_
}<form>_x000D_
<label>Password: <input name="password" type="password" onChange="onChange()" /> </label><br />_x000D_
<label>Confirm : <input name="confirm" type="password" onChange="onChange()" /> </label><br />_x000D_
<input type="submit" />_x000D_
</form>Solution Using jQuery
<script src="http://code.jquery.com/jquery-2.1.0.min.js"></script>
<style>
#form label{float:left; width:140px;}
#error_msg{color:red; font-weight:bold;}
</style>
<script>
$(document).ready(function(){
var $submitBtn = $("#form input[type='submit']");
var $passwordBox = $("#password");
var $confirmBox = $("#confirm_password");
var $errorMsg = $('<span id="error_msg">Passwords do not match.</span>');
// This is incase the user hits refresh - some browsers will maintain the disabled state of the button.
$submitBtn.removeAttr("disabled");
function checkMatchingPasswords(){
if($confirmBox.val() != "" && $passwordBox.val != ""){
if( $confirmBox.val() != $passwordBox.val() ){
$submitBtn.attr("disabled", "disabled");
$errorMsg.insertAfter($confirmBox);
}
}
}
function resetPasswordError(){
$submitBtn.removeAttr("disabled");
var $errorCont = $("#error_msg");
if($errorCont.length > 0){
$errorCont.remove();
}
}
$("#confirm_password, #password")
.on("keydown", function(e){
/* only check when the tab or enter keys are pressed
* to prevent the method from being called needlessly */
if(e.keyCode == 13 || e.keyCode == 9) {
checkMatchingPasswords();
}
})
.on("blur", function(){
// also check when the element looses focus (clicks somewhere else)
checkMatchingPasswords();
})
.on("focus", function(){
// reset the error message when they go to make a change
resetPasswordError();
})
});
</script>
And update your form accordingly:
<form id="form" name="form" method="post" action="registration.php">
<label for="username">Username : </label>
<input name="username" id="username" type="text" /></label><br/>
<label for="password">Password :</label>
<input name="password" id="password" type="password" /><br/>
<label for="confirm_password">Confirm Password:</label>
<input type="password" name="confirm_password" id="confirm_password" /><br/>
<input type="submit" name="submit" value="registration" />
</form>
This will do precisely what you asked for:
It is advisable not to use a keyup event listener for every keypress because really you only need to evaluate it when the user is done entering information. If someone types quickly on a slow machine, they may perceive lag as each keystroke will kick off the function.
Also, in your form you are using labels wrong. The label element has a "for" attribute which should correspond with the id of the form element. This is so that when visually impaired people use a screen reader to call out the form field, it will know text belongs to which field.
<form id="form" name="form" method="post" action="registration.php" onsubmit="return check()">
....
</form>
<script>
$("#form").submit(function(){
if($("#password").val()!=$("#confirm_password").val())
{
alert("password should be same");
return false;
}
})
</script>
hope it may help you
Try this one ;
CSS
#indicator{
width:20px;
height:20px;
display:block;
border-radius:10px;
}
.green{
background-color:green;
display:block;
}
.red{
background-color:red;
display:block;
}
HTML
<form id="form" name="form" method="post" action="registration.php">
<label >username :
<input name="username" id="username" type="text" /></label> <br>
<label >password :
<input name="password" id="password" type="password" id="password" /></label> <br>
<label>confirm password:
<input type="password" name="confirm_password" id="confirm_password" /><span id="indicator"></span> <br>
</label>
<label>
<input type="submit" name="submit" id="regbtn" value="registration" />
</label>
</form>
JQuery
$('#confirm_password').keyup(function(){
var pass = $('#password').val();
var cpass = $('#confirm_password').val();
if(pass!=cpass){
$('#indicator').attr({class:'red'});
$('#regbtn').attr({disabled:true});
}
else{
$('#indicator').attr({class:'green'});
$('#regbtn').attr({disabled:false});
}
});
You can check confirm password by only simple javascript
html
<input type="password" name="password" required>
<input type="password" name="confirmpassword" onkeypress="register()" required>
<div id="checkconfirm"></div>
and in javascript
function register() {
var password= document.getElementById('password').value ;
var confirm= document.getElementById('confirmpassword').value;
if (confirm!=password){
var field = document.getElementById("checkconfirm")
field.innerHTML = "not match";
}
}
Also you can use onkeyup instead of onkeypress.
The code proposed by #Chandrahasa Rai works almost perfectly good, with one exception!
When triggering function checkPass(), i changed onkeypress to onkeyup so the last key pressed can be processed too. Otherwise when You type a password, for example: "1234", when You type the last key "4", the script triggers checkPass() before processing "4", so it actually checks "123" instead of "1234". You have to give it a chance by letting key go up :)
Now everything should be working fine!
#Chandrahasa Rai, HTML code:
<input type="text" onkeypress="checkPass();" name="password" class="form-control" id="password" placeholder="Password" required>
<input type="text" onkeypress="checkPass();" name="rpassword" class="form-control" id="rpassword" placeholder="Retype Password" required>
#my modification:
<input type="text" onkeyup="checkPass();" name="password" class="form-control" id="password" placeholder="Password" required>
<input type="text" onkeyup="checkPass();" name="rpassword" class="form-control" id="rpassword" placeholder="Retype Password" required>
If you don't want use jQuery:
function check_pass() {
if (document.getElementById('password').value ==
document.getElementById('confirm_password').value) {
document.getElementById('submit').disabled = false;
} else {
document.getElementById('submit').disabled = true;
}
}
<input type="password" name="password" id="password" onchange='check_pass();'/>
<input type="password" name="confirm_password" id="confirm_password" onchange='check_pass();'/>
<input type="submit" name="submit" value="registration" id="submit" disabled/>
$('input[type=submit]').on('click', validate);
function validate() {
var password1 = $("#password1").val();
var password2 = $("#password2").val();
if(password1 == password2) {
$("#validate-status").text("valid");
}
else {
$("#validate-status").text("invalid");
}
}
Logic is to check on keyup if the value in both fields match or not.
$box = $('input[name=showPassword]');
$box.focus(function(){
if ($(this).is(':checked')) {
$('input[name=pswd]').attr('type', 'password');
} else {
$('input[name=pswd]').attr('type', 'text');
}
})
Source: Stackoverflow.com