Jun 10, 2010 · These are the main ways to do JavaScript loops, but there are a few more ways to do that. Also we use a for in loop for looping over objects in JavaScript. Also look at the map(), …

Feb 17, 2012 · Functional loops - forEach, map, filter, also reduce (they loop through the function, but they are used if you need to do something with your array, etc. // For example, in this case …

Aug 27, 2010 · In each of the 100 loops, it awaits for a new Promise to resolve. This happens only after setTimeout 'allows' it after 190ms. Until then, code is blocked by the async-await / …

Jul 27, 2012 · I need to sum all my numbers from a for loop with javascript var nums = ['100','300','400','60','40']; for(var i=1; i < nums.length; i++){ var num = nums[i] + nums ...

Mar 18, 2011 · As of June 2016, doing some tests in latest Chrome (71% of the browser market in May 2016, and increasing):. The fastest loop is a for loop, both with and without caching length …

Jan 17, 2013 · Using Object.entries you do something like this. // array like object with random key ordering const anObj = { 100: 'a', 2: 'b', 7: 'c' }; console.log(Object.entries ...

@NickFitz: you could make a performance argument for it. In the case of nested loops labels could be useful to break out of an outer loop. While it may more elegant and modular to avoid …

One of the best things about for..of loops is that they can iterate over more than just arrays. You can iterate over any type of iterable, including maps and objects. You can iterate over any type …

It loops through an array, finding and returning the first index of a value. If the value is not contained in the array, it returns -1. <array> is the array to look through, <element> is the …

Apr 5, 2012 · Since now, I'm using this loop to iterate over the elements of an array, which works fine even if I put objects with various properties inside of it. var cubes[]; for (i in cubes){ cubes[i].