jquery check the class from variable name

Question

I have a problem that i cannot get a class from a variable in javascript.

var li_id = LI_element.id;
if(!($("'#"+li_id+"'").hasClass("abc"))) {
    console.log(LI_element);
}

Here, li_id gives me id of an element and i want to check that this element has the class abc or not. But, when i execute the above command it gives me error that says

throw new Error( "Syntax error, unrecognized expression: " + msg );

I assume there is some error in the if statement. Thanks for your help!

What is the msg of the error? Also you can simply use $(LI_element).hasClass(... instead of concatenating a selector together. — Rory McCrossan
– Rory McCrossan, Commented Oct 11, 2013 at 10:47
Why you just don't use LI_element to check if hasClass and need to convert a id variable and check if that #id hasClass? — X-Pippes
– X-Pippes, Commented Oct 11, 2013 at 10:50

VisioN · Accepted Answer · 2013-10-11 10:46:44Z

4

In the selector you have extra quotes ', which shouldn't be there.

Otherwise just use the following syntax:

if (!$(LI_element).hasClass("abc")) {
    console.log(LI_element);
}

answered Oct 11, 2013 at 10:46

VisioN

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