javascript - Making a function to wait an event before returning? - Stack Overflow

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function myFunction() {
    wait(); //what I put there?
    return;
}

myFunction(); 

//this is an event; when its triggered I want function to resume
onSomething = function() {
    myFunction.resume(); //what I put there?
}

Its just a local experience. Note that while(!resume) won't work because that would prevent the event onSomething to happen.

function myFunction() {
    wait(); //what I put there?
    return;
}

myFunction(); 

//this is an event; when its triggered I want function to resume
onSomething = function() {
    myFunction.resume(); //what I put there?
}

Its just a local experience. Note that while(!resume) won't work because that would prevent the event onSomething to happen.

• javascript
• events
• function
• return
• wait

Share Improve this question Follow asked Nov 6, 2011 at 13:45 MaiaVictorMaiaVictor 53k4747 gold badges157157 silver badges301301 bronze badges 1

• You can do that with generators, but that's not cross-browser. It will e with ECMAScript 6 though... – Šime Vidas Commented Nov 6, 2011 at 13:51

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3 Answers 3

Sorted by: Reset to default 5

This is not possible.

Instead of waiting for the event, you want to put whatever you need to do when it happens into the onSomething function.

You have to switch your brains to thinking in events instead of the "traditional" programming flow. The way to do this is:

function myFunctionPart1() {
    doSomething();
}

function myFunctionPart2() {
    doSomethingElse();
}

myFunctionPart1();

onSomething = function() {
    myFunctionPart2();
}

So, with a generator it would look like so:

function test() {
    // first part of function
    yield;
    // second part of function
    yield;
}

var gen = test(); // creating a generator

gen.next(); // execute first part

button.onclick = function () {
    gen.next(); // execute second part on button click
};

Live demo: http://jsfiddle/MQ9PT/

This however doesn't work beyond Firefox. It will bee part of the ECMAScript standard in the next edition...

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