Jun 10, 2010 · 133 In JavaScript it's not advisable to loop through an Array with a for-in loop, but it's better to use a for loop such as:

Feb 17, 2012 · How can I loop through all the entries in an array using JavaScript?

869 for in loops over enumerable property names of an object. for of (new in ES6) does use an object-specific iterator and loops over the values generated by that. In your example, the array iterator does …

Apr 15, 2009 · That's the magic, and frustration, of closure. "JavaScript Functions close over the scope they are declared in, and retain access to that scope even as variable values inside of that scope …

Jul 30, 2012 · Yes, functions always end whenever their control flow meets a return statement. The following example demonstrates how return statements end a function’s execution.

Apr 5, 2016 · Understanding nested for loops in javascript Asked 9 years, 10 months ago Modified 6 years, 1 month ago Viewed 101k times

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 nested loops by moving inner loops to separate functions, it will run …

for (var j = 0; j < myArray.length; j++){ console.log(myArray[j.x]); } This returns "undefined." Again the console log outside the loop tells me that the objects all have values for "x". How do I access these …

JavaScript will automatically determine the way its passes through the items. So if you know that your array is really non-associative you can use for (var i=0; i<=arrayLen; i++), and skip the auto-detection …

Jan 17, 2013 · 5 ->if we iterate over a JavaScript object using and find key of array of objects