jQuery - on text change while user typing or paste

Question

I'm new to jQuery and I've tried to make something but I failed so here is my problem when the user type it works but when the user paste something didn't work !!

$(document).ready(function(){

        $('#username').keyup(username_check);
});

the username_check function :

function username_check(){  
var username = $('#username').val();
if(username == "" || username.length < 4){
alert("error");
}

the field :

<input type="text" id="username" name="username" required>

possible duplicate of How do I capture the input value on a paste event? — GillesC
– GillesC, Commented Jun 12, 2014 at 17:38

tymeJV · Accepted Answer · 2014-06-12 17:35:15Z

41

If you want to capture all input events:

$('#username').on("input", username_check);

answered Jun 12, 2014 at 17:35

tymeJV

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2 Comments

chrisallick Over a year ago

This worked perfectly for me. I want to turn a button on when someone types anything into a box. removed on change listener and added this.

Kenston Choi Over a year ago

IE9 though doesn't fully support that event (caniuse.com/#feat=input-event).

Shaunak D · Accepted Answer · 2014-06-12 17:55:04Z

25

Use .on() or .bind() to bind multiple events,

$(document).ready(function(){
   $('#username').on('keyup paste',username_check);
});


function username_check(){ 
    setTimeout( function() {
        var username = $('#username').val();
    },100);
    if(username == "" || username.length < 4){
      alert("error");
    }
}

Working Fiddle

edited Jun 12, 2014 at 17:55

answered Jun 12, 2014 at 17:34

Shaunak D

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