testvar[1] is the value of that array index, which is the number 2. Numbers don't have a length property, and you're checking for 2.length which is undefined. If you want the length of the …

Mar 2, 2015 · Determining the length of an array is a fundamental operation in JavaScript. We will explore multiple approaches to find the length of an array. Please refer WebDevLearners for …

You can use forEach, if you want to keep the words, and the length you can do it like this:. var a = "Hello world" ; var chars = a.split(' '); var words = []; chars.forEach(function(str) { …

Apr 20, 2012 · In your case you can simply use arr.length and arr[0].length to find the width and the depth. Often, the arrays will have variable depths which makes it necessary to iterate …

Aug 13, 2018 · I need to get length of an array inside an array for my iteration. I have three arrays that contain names from three different majors in my college that nested in one array called …

May 25, 2017 · we can you use .length property to set or returns number of elements in an array. return value is a number > set the length: let count = myArray.length; > return lengthof an …

Dec 15, 2018 · I understand that finding the length of a JS object has been answered extensively here. With one of the suggested solutions being Object.keys(myObj).length. However, I'm …

Jan 31, 2011 · When you call Array.apply with an array or an object with a length property Array is going to use the length to explicitly set each value of the new array. This is why Array(5) gives …

First, there is no such thing as a JSON object. JSON is a string format that can be used as a representation of a Javascript object literal. Since JSON is a string, Javascript will treat it like a …

Dec 25, 2013 · Later I need to get the number of text boxes I have created. So I'm using. var myarr=document.getElementsByName('TxtBx_'); var numberofElements=myarr.length; but …