Jun 10, 2010 · The best way in my opinion is to use the Array.forEach function. If you cannot use that I would suggest to get the polyfill from MDN. To make it available, it is certainly the safest way to iterate over an array in JavaScript. Array.prototype.forEach() So as others has suggested, this is almost always what you want:

You can use a for..of loop to loop over an array of objects. for (let item of items) { console.log(item); // Will display contents of the object inside the array } 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.

Feb 17, 2012 · When iterating over an array, we often want to accomplish one of the following goals: We want to iterate over the array and create a new array: Array.prototype.map. We want to iterate over the array and don't create a new array: Array.prototype.forEach for..of loop. In JavaScript, there are many ways of accomplishing both of these goals.

Apr 5, 2012 · An efficient way to loop over an Array is the built-in array method .map() For a 1-dimensional array it would look like this: function HandleOneElement( Cuby ) { Cuby.dimension Cuby.position_x ... } cubes.map(HandleOneElement) ; // the map function will pass each element for 2-dimensional array:

Mar 18, 2011 · If your app doesn't really iterate through lots of items or you just need to do small iterations here and there, using the standard forEach callback or any similar function from your JS library of choice might be more understandable and less prone to errors, since index variable scope is closed and you don't need to use brackets, accessing the ...

Well, all I can see there is that you have two JSON objects, seperated by a comma. If both of them were inside an array ([...]) it would make more sense. And, if they ARE inside of an array, then you would just be using the standard "for var i = 0..." type of loop.

Oct 1, 2008 · You can however populate an array with nodelist elements like this: var myElements = []; for (var i=0; i<myNodeList.length; i++) { var element = myNodeList[i]; myElements.push(element); }; After that you can feel free to call .innerHTML or .style or something on the elements of your array.

Jul 3, 2009 · Vote to reopen because while Array's and Objects are similar in javascript they have differences and this is one of them safely looping over an object's properties is a lot harder than an array in Javascript, and the answer linked to with the close covers explicitly only arrays, maybe needs pointing to a different question on the close but ...

Jan 17, 2013 · The Object.entries() method returns an array of a given object's own enumerable property [key, value] So you can iterate over the Object and have key and value for each of the object and get something like this.

May 13, 2012 · I am fairly new to Javascript and I didn't find a proper way to do it. Here is what I tried: Built-in "for..in". It seems that this is not the correct way to iterate through an array. forEach from ECMASCRIPT5. This one iterate correctly, but I cannot break from the loop. _.each() from Underscore.js. Same result as #2. $.each() from JQuery. With ...