$('#id').value is undefined

Question

I am having trouble with trying to check the length of a field and set a value based on the result. Using firebug with firefox I keep getting the error \'elUsername\' is not def

Answer 1

Change those variables to this:

var elUsername = $('#usernameInput').val();

Answer 2

try this

var elUsername = $('#usernameInput').val();

Instead of

var elUsername = $('#usernameInput').value;

Answer 3

You're trying to use a native JavaScript property on a jQuery object. Use :

var elUsername = $('#usernameInput').val();

or

var elUsername = document.getElementById('usernameInput').value;

or the slightly less obvious, but still valid:

var elUsername = $('#usernameInput')[0].value;
var elUsername = $('#usernameInput').get(0).value;