Jan 31, 2011 · 970 Most of the tutorials that I've read on arrays in JavaScript (including w3schools and devguru) suggest that you can initialize an array with a certain length by passing an …

Find length (size) of an array in JavaScript Asked 14 years, 11 months ago Modified 2 years, 11 months ago Viewed 348k times

Mar 2, 2015 · Using length Property The most straightforward and commonly used method to find the length of an array is by accessing its length property. This property returns the number of …

May 25, 2017 · The OP was asking 'Array.size () vs Array.length'. From the previous discussions, it was make clear, that the 'size' Function is not part of standard JavaScript but implemented …

Jan 24, 2016 · Adding description from Array#length MDN You can set the length property to truncate an array at any time. When you extend an array by changing its length property, the …

Aug 17, 2015 · Setting the Array.length property is the best answer to this question, clear and performant = elegant. Set default values in the expanded elements with Array.fill () : arr.length …

37 i'm doing some javascript coding and I was wondering if the length method is "precomputed", or remembered by the JS engine. So, the question is: If I'm checking really often for an array …

Apr 19, 2012 · How to get the dimensions given a multidimensional array? Edit: it could be of 1, 2, or 3 dimensions but each sub-array has the same length. i.e. for var a = [[1,1,1], [1,1,1]] would …

Jul 20, 2019 · I want to get an array out of the keys on my object but the length should 0 when the Object is empty. The length of array is correct when I try console.log() with the array but my …

When you set a variable that points to an existing array to point to a new array, all you are doing is breaking the link the variable has to that original array. When you use array.length = 0 (and …