jQuery disable/enable submit button

user_185555 0
Viewed 1967777

I have this HTML:

<input type="text" name="textField" />
<input type="submit" value="send" />

How can I do something like this:

  • When the text field is empty the submit should be disabled (disabled="disabled").
  • When something is typed in the text field to remove the disabled attribute.
  • If the text field becomes empty again(the text is deleted) the submit button should be disabled again.

I tried something like this:

$(document).ready(function(){
    $('input[type="submit"]').attr('disabled','disabled');
    $('input[type="text"]').change(function(){
        if($(this).val != ''){
            $('input[type="submit"]').removeAttr('disabled');
        }
    });
});

…but it doesn't work. Any ideas?

html jquery javascript
21 Answers

For form login:

<form method="post" action="/login">
    <input type="text" id="email" name="email" size="35" maxlength="40" placeholder="Email" />
    <input type="password" id="password" name="password" size="15" maxlength="20" placeholder="Password"/>
    <input type="submit" id="send" value="Send">
</form>

Javascript:

$(document).ready(function() {    
    $('#send').prop('disabled', true);

    $('#email, #password').keyup(function(){

        if ($('#password').val() != '' && $('#email').val() != '')
        {
            $('#send').prop('disabled', false);
        }
        else
        {
            $('#send').prop('disabled', true);
        }
    });
});
user_11168020

Vanilla JS Solution. It works for a whole form not only one input.

In question selected JavaScript tag.

HTML Form:

var form = document.querySelector('form')
    var inputs = form.querySelectorAll('input')
    var required_inputs = form.querySelectorAll('input[required]')
    var register = document.querySelector('input[type="submit"]')
    form.addEventListener('keyup', function(e) {
        var disabled = false
        inputs.forEach(function(input, index) {
            if (input.value === '' || !input.value.replace(/\s/g, '').length) {
                disabled = true
            }
        })
        if (disabled) {
            register.setAttribute('disabled', 'disabled')
        } else {
            register.removeAttribute('disabled')
        }
    })
<form action="/signup">
        <div>
            <label for="username">User Name</label>
            <input type="text" name="username" required/>
        </div>
        <div>
            <label for="password">Password</label>
            <input type="password" name="password" />
        </div>
        <div>
            <label for="r_password">Retype Password</label>
            <input type="password" name="r_password" />
        </div>
        <div>
            <label for="email">Email</label>
            <input type="text" name="email" />
        </div>
        <input type="submit" value="Signup" disabled="disabled" />
    </form>

Some explanation:

In this code we add keyup event on html form and on every keypress check all input fields. If at least one input field we have are empty or contains only space characters then we assign the true value to disabled variable and disable submit button.

If you need to disable submit button until all required input fields are filled in - replace:

inputs.forEach(function(input, index) {

with:

required_inputs.forEach(function(input, index) {

where required_inputs is already declared array containing only required input fields.

user_86211570

Disable: $('input[type="submit"]').prop('disabled', true);

Enable: $('input[type="submit"]').removeAttr('disabled');

The above enable code is more accurate than: 

$('input[type="submit"]').removeAttr('disabled');

You can use both methods.

user_112013430

take look at this snippet from my project

 $("input[type="submit"]", "#letter-form").on("click",
        function(e) {
             e.preventDefault();


$.post($("#letter-form").attr('action'), $("#letter-form").serialize(),
                 function(response) {// your response from form submit
                    if (response.result === 'Redirect') {
                        window.location = response.url;
                    } else {
                        Message(response.saveChangesResult, response.operation, response.data);
                    }
});
$(this).attr('disabled', 'disabled'); //this is what you want

so just disabled the button after your operation executed

$(this).attr('disabled', 'disabled');

user_42514310

Try

let check = inp=> inp.nextElementSibling.disabled = !inp.value;
<input type="text" name="textField" oninput="check(this)"/>
<input type="submit" value="send" disabled />

user_8600990

I Hope below code will help someone ..!!! :) 

jQuery(document).ready(function(){

    jQuery("input[type=submit]").prop('disabled', true);

    jQuery("input[name=textField]").focusin(function(){
        jQuery("input[type=submit]").prop('disabled', false);
    });

    jQuery("input[name=textField]").focusout(function(){
        var checkvalue = jQuery(this).val();
        if(checkvalue!=""){
            jQuery("input[type=submit]").prop('disabled', false);
        }
        else{
            jQuery("input[type=submit]").prop('disabled', true);
        }
    });

}); /*DOC END*/
user_104992950
Related