ignore

function

`Zone.ignore(fn)`

Creates a function that, when called, will not track any calls. This might be needed if you are calling code that does unusual things, like using setTimeout recursively indefinitely.

var Zone = require("can-zone");

new Zone().run(function(){
    function recursive(){
        setTimeout(function(){
            recursive();
        }, 20000);
    }

    var fn = Zone.ignore(recursive);

    // This call will not be waited on.
    fn();
});

Parameters

fn {function}:
A function that contains calls to asynchronous functions that are needing to be ignored.

Returns

{function}:

A function in which calls to addWait and removeWait will be ignored, preventing the Zone's promise from remaining unresolved while asynchronous activity continues within.

Use

Zone.ignore is used to prevent a function from being waited on within a Zone. Normally a Zone's calls to functions like setTimeout and XMLHttpRequest are waited on before the run promise is resolved, but in some cases you might not want to wait on these calls; for example if there is a very long delay or a delay that will not result in rendering to take place.

Provide Zone.ignore a function and it will return a function that can be called in it's place.

var Zone = require("can-zone");

var fn = Zone.ignore(function(){
    // do any asynchronous stuff here
});

fn(); // waits ignored