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:

Feb 17, 2012 · 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. However, some are more convenient than others.

The console should bring up every object in the array, right? But in fact it only displays the first object. if I console log the array outside of the loop, all the objects appear so there's definitely more in there. Anyway, here's the next problem. How do I access, for example Object1.x in the array, using the loop?

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:

May 13, 2012 · First thing you have to kiss-bye-bye is "Array". There is no real Array in ECMAscript (forgetting about typed-arrays and binary trickery). So what you've got there is a plain Object. To iterate over that, I'd suggest to use .forEach if you're cool with ES5.

To reference the contents of the single array containing one or more objects i.e. everything in the brackets of something like this {messages: [{"a":1,"b":2}] } ,just add [0] to the query to get the first array element

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 ...

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 ...

Aug 18, 2011 · The outer loop would iterate the parent array, giving you one of the internal arrays each time. The inner loop would give you the items within each array. Example:

Instead, convert the collection to array, and iterate that array. Or rather get the elements using .querySelectorAll , which gives you a static NodeList and a more flexible way to select elements. If you really need a live list of elements, use the closest possible common ancestor element as the context instead of document .