not able to enable button using javascript

Question

i have 2 fields username and password and login button .Here if i click on username field,its showing number no of users .then if i click on user and password that login button has to enable.but it is not enabling.its enable,if i write both username and password ,then login button is enabiling,Can u please suggest Me?

$("#Username").keyup(function() {
    var len = $('#Username').val().length;
    if (len > 30 || len == 0) {
        $('#Username').css('background', 'rgb(255, 214, 190)');
        blsp();
        if (len != 0) {
            $('#nameal').css('color', 'rgb(255, 57, 19)').text('ID: Too long').fadeIn()
        } else {

        }
        flg.Username = 1
    } else {
        $('#Username').css('background', 'rgb(255, 255, 255)');
        flg.Username = 0;
        tcheck()
    }
});

function tcheck() {
    if (flg.Username == 0 && flg.Password == 0) {
        $('#signupb').css('opacity', '1').css('cursor', 'pointer');
        document.getElementById('signupb').disabled = false;
        // document.getElementById('signupb').enabled = false;
    } else {
        blsp();
    }
}


<input disabled="true" id="signupb" style="opacity: 0.2; cursor: default;" class="signin_btn" name=""   type="submit" value="Login"/>

Tushar · Accepted Answer · 2015-05-26 12:23:27Z

1

You can use prop:

$('#signupb').prop('disabled', false);

Set one or more properties for the set of matched elements.

Docs: https://api.jquery.com/prop

OR

You can also use removeAttr:

$('#signupb').removeAttr('disabled');

answered May 26, 2015 at 12:23

Tushar

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Radonirina Maminiaina · Accepted Answer · 2015-05-26 12:24:17Z

1

You can remove the attribute disabled:

$('#signupb').removeAttr("disabled");

answered May 26, 2015 at 12:24

Radonirina Maminiaina

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antyrat · Accepted Answer · 2015-05-26 12:22:02Z

0

I would suggest you to use removeProp jQuery method instead:

$( '#signupb' ).removeProp( 'disabled' );

Or removeAttr

$( '#signupb' ).removeAttr( 'disabled' );

answered May 26, 2015 at 12:22

antyrat

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7 Comments

Abhishek Mahapatra Over a year ago

so u mean to say i have to remove to document.getElementById('signupb').disabled = false; and add $( '#signupb' ).removeProp( 'disabled' ); IS it?

antyrat Over a year ago

@AbhishekMahapatra yes, or removeAttr method. You can choose.

Abhishek Mahapatra Over a year ago

can i chane in input filed ,what i wrote

antyrat Over a year ago

@AbhishekMahapatra I don't understand what you mean.

Abhishek Mahapatra Over a year ago

In input tag i wrote <input disabled="true"> can i remove or not?

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