LimePot
76722fec47
Going to slowly work on a Bulma site, which will end up being the main site. Currently under the /BETA/ folder so Alpha site will still be main site.
58 lines
No EOL
2.1 KiB
JavaScript
58 lines
No EOL
2.1 KiB
JavaScript
/* JavaScript Sync/Async forEach - v0.1.2 - 1/10/2012
|
|
* http://github.com/cowboy/javascript-sync-async-foreach
|
|
* Copyright (c) 2012 "Cowboy" Ben Alman; Licensed MIT */
|
|
|
|
(function(exports) {
|
|
|
|
// Iterate synchronously or asynchronously.
|
|
exports.forEach = function(arr, eachFn, doneFn) {
|
|
var i = -1;
|
|
// Resolve array length to a valid (ToUint32) number.
|
|
var len = arr.length >>> 0;
|
|
|
|
// This IIFE is called once now, and then again, by name, for each loop
|
|
// iteration.
|
|
(function next(result) {
|
|
// This flag will be set to true if `this.async` is called inside the
|
|
// eachFn` callback.
|
|
var async;
|
|
// Was false returned from the `eachFn` callback or passed to the
|
|
// `this.async` done function?
|
|
var abort = result === false;
|
|
|
|
// Increment counter variable and skip any indices that don't exist. This
|
|
// allows sparse arrays to be iterated.
|
|
do { ++i; } while (!(i in arr) && i !== len);
|
|
|
|
// Exit if result passed to `this.async` done function or returned from
|
|
// the `eachFn` callback was false, or when done iterating.
|
|
if (abort || i === len) {
|
|
// If a `doneFn` callback was specified, invoke that now. Pass in a
|
|
// boolean value representing "not aborted" state along with the array.
|
|
if (doneFn) {
|
|
doneFn(!abort, arr);
|
|
}
|
|
return;
|
|
}
|
|
|
|
// Invoke the `eachFn` callback, setting `this` inside the callback to a
|
|
// custom object that contains one method, and passing in the array item,
|
|
// index, and the array.
|
|
result = eachFn.call({
|
|
// If `this.async` is called inside the `eachFn` callback, set the async
|
|
// flag and return a function that can be used to continue iterating.
|
|
async: function() {
|
|
async = true;
|
|
return next;
|
|
}
|
|
}, arr[i], i, arr);
|
|
|
|
// If the async flag wasn't set, continue by calling `next` synchronously,
|
|
// passing in the result of the `eachFn` callback.
|
|
if (!async) {
|
|
next(result);
|
|
}
|
|
}());
|
|
};
|
|
|
|
}(typeof exports === "object" && exports || this)); |