Not Equal To notation in Javascript to use in jQuery

Question

Is this the notation to use for Not Equal To in JS, in jquery code

!== OR != 

None of them work

Here is the code I am using

var val = $('#xxx').val();
if (val!='') {
 alert("jello");
}

Thanks Jean

Answer 1

Equality testing in JQuery works no different from "standard" JavaScript.

!= means "not equal to", but !== makes sure that both values have the same type as well. As an example, 1 == '1' is true but not 1 === '1', because the LHS value is a number and the RHS value is a string.

Given your example, we cannot really tell you a lot about what is going on. We need a real example.

Answer 2

.val() is used to retrieve or set values from input in forms mostly, is that what you want to do? If not maybe you mean using .text() or .html().

If that is indeed what you want to do maybe you have your selector wrong and its returning null to you, and null does not equal '', or maybe you actually have data there, like whitespaces. :)