Javascript String Empty Check

Under Category: Javascript,JQuery

What’s the best way to check for an empty string in Javascript?

If you just want to check whether there’s any value, you can do

if(!parameter){
    //if id is empty, do something
}

Here is an example using JQuery to select an element with id name of id.

if(!$("#id").val()){
    //if id is empty
    //be careful about the "!" sign
}

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