Oct 20, 2010 · To make an independent copy of an array rather than a copy of the refence to it, you can use the array slice method. Example: To make an independent copy of an array …

2) Using slice method, slice is for slicing part of the array, it will slice some part of your array without touching the original, in the slice, if don't specify the start and end of the array, it will …

May 5, 2017 · Creating a deep copy with structuredClone. The modern way to deep copy an array in JavaScript is to use structuredClone: array2 = structuredClone(array1); This function is …

Dec 7, 2012 · var len = arr.length, copy = new Array(len); // boost in Safari for (var i=0; i<len; ++i) copy[i] = arr[i].slice(0); To extend to higher-dimensional arrays, either use recursion or nested …

Sep 23, 2008 · See Corban's answer for benchmarks.. Reliable cloning using a library. Since cloning objects is not trivial (complex types, circular references, function etc.), most major …

Aug 22, 2012 · I have two arrays: ArrayA and ArrayB. I need to copy ArrayA into ArrayB (as opposed to create a reference) and I've been using .splice(0) but I noticed that it seems to …

Oct 2, 2012 · Best way is << let B = JSON.parse(JSON.stringify(A)) >> As it is like a stream of data. The concept of reference is due to deep copy & shallow copy. In Deep copy reference …

I want to form an array from an existing array so I can modify the new array without affecting the old. I realise arrays are mutable and this is why the new array affects the old. E.g. old = …

Feb 13, 2015 · This function (Array.prototype.copy) uses recursion to recall it self when an object or array is called returning the values as needed. The process is decently speedy, and does …

Update - Array.prototype.toSorted() proposal. The Array.prototype.toSorted(compareFn) -> Array is a new method that was proposed to be added to the Array.prototype and is currently in …