Is there a way to return an outer function in Javascript?

Question

Let's say I have the following code:

function check(code){
    var result=false;
    $.each(arrayOfFunctions,function(){
        thisresult=this.call(this,code);
        if (thisresult==true){
            result=true;
        }
    });
    return result;
}

So I have a function with one input. I have an array of functions that I apply to that data. If any of them are true, the outer function is true.

When I'm in the inner function, is there a way to return on the outer function? Are there any other optimizations that can be done to my code?

You may want to optimize the anonymous function to function() { return !(result = this.call(this, code)); } — DashK
– DashK, Commented Feb 10, 2012 at 21:06

Rob W · Accepted Answer · 2012-02-10 20:52:59Z

3

In jQuery, using return false inside $.each and $().each will stop the loop. Before stopping the loop, set a variable which will be returned.

function check(code){
    var result = false;
    $.each(arrayOfFunctions,function(){
        thisresult = this.call(this,code);
        if (thisresult == true){
            result=true;
            return false; // = similar to the "break" keyword in a loop
        }
    });
    return result;
}

answered Feb 10, 2012 at 20:52

Rob W

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2 Comments

Joe Over a year ago

Good point, I actually have that in my code, but I omitted it here to reduce confusion.

Rob W Over a year ago

@Joe Considering the names and formatting, I assumed that you provided pseudo-code. If that's your real code, you should at least prefix thisresult by var. If you share more information about your code, I can optimize it. I suspect that you don't even need jQuery.

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