Question

I need to check if an object has same id on DOM, because i am trying to create a modal window library,

the problem is in browsers console when i write

$("#anonexistingid");

it returns []

but in my code

if($("#"+id)!==[]){
        return;
    }

just does not work. What is the proper way of defining an empty array?(Because i think [] means empty array, maybe not i am not sure :D)

Answer 1

JQuery always returns an object. you can check it’s length to see if it’s empty or not:

if($("#"+id).length !== 0){

}