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sethschori/myForEach (Callbacks).js

Forked from anonymous/myForEach (Callbacks).js
Created July 31, 2016 19:50
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https://repl.it/CgPo/37 created by sethopia
Raw
myForEach (Callbacks).js
// Attach a method to the Array prototype called myForEach.
// It should be utilized and perform exactly as Array.prototype.forEach does. Use the code snippet below as a guide.
Array.prototype.myForEach = function(callback) {
for (var i = 0; i < this.length; i++) {
callback(this[i],i,this);
}
}
var sum = 0;
function addToSum(num) {
sum += num;
}
var arr = [1,2,3];
arr.myForEach(addToSum);
console.log(sum); // 6
Raw
myForEach (Callbacks)_console_dump.txt
Native Browser JavaScript
>>> 6
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