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What is the most efficient way to clone a JavaScript object? I've seen obj = eval(uneval(o)); being used, but that's non-standard and only supported by Firefox. …

jQuery.extend is pretty fast when the deep flag is set to false (shallow clone). … If you know the structure of the objects you are trying to clone or can avoid deep nested arrays you can write a simple for (var i in obj) loop to clone your object while checking hasOwnProperty and it …

When I first came up with this problem I just thought of something like var clonedNodesArray = nodesArray.clone() would exist and searched for information on how to clone objects in JavaScript. … Then I tried var clonedNodesArray = jQuery.extend(true, {}, nodesArray); which deep copies an Object, but I got "too much recursion" and "control stack overflow" messages from both Firebug and Opera Dragonfly …

How do you deep clone a JavaScript object? … What is the most elegant or efficient way to create a deep clone. We do care about edge cases like cloning array's. Not breaking prototype chains, dealing with self reference. …

This function can deep clone an object without any circular references- it works. function deepClone( obj ) { if( ! …

It works in many browsers (see Can I Use). const clone = structuredClone(object); Old answer To do this for any object in JavaScript will not be simple or straightforward. … For example, a Date object stores its data as a hidden member: function clone(obj) { if (null == obj || "object" ! …

I search for a bit, and found a few ways: structuredClone() - Error: Function object could not be cloned. {...levels[leve]} - Doesn't not deep copy Object.assign({},levels[level]) - Doesn't not deep copy … JSON.parse(JSON.stringify(levels[campaing][id])) Doesn't copy functions How to Deep clone in javascript - does not copy functions Looks like my problem is that my levels[level] is object with object, …

I'm facing a challenge in JavaScript where I need to create a deep clone of an object. The object can have nested objects, arrays, and different types of properties. … "] }; I want to create a deep clone of this object so that changes to the nested objects or arrays in the cloned object do not affect the original object. …

I know of a Deep Cloning library in Java, which I use in my server side code. However, right now I need to "deep clone" an object on the client side code. … I believe there's a Javascript framework that does this thing which is YUI3, however I am not sure how to use this with my GWT code. …

I am trying to clone an Object that is frozen with npm deep-freeze, but the function will not run itself again. … I have tried to run the if(typeof === "object"), followed by Object.assign, but this gives me the typeError: Cannot assign to read only property function updateTree(tree, id, values) { const treeData …

I'm creating a tool that parses XML file into XMLDocument object. … The question is - how to make deep clone of parsed xml object? Thanks! …

Object.assign doesn't deep copy an object. considering following code it should print 0 0 0 1 but it is printing 0 0 1 1. …

, not part of JavaScript. … What objects require deep-cloning and why? …

Is there a language-level way to deep clone a JavaScript object that is supported by main browsers (desktop and mobile)? I've seen that eval(uneval(o)); is non-standard. … Just copy the bytes from the object to somewhere else in the RAM. Anything done above this looks like an inefficiency to me. …

"I am looking for a reliable approach to implement a deep clone function in JavaScript that can create a complete copy of an object, including all nested properties and arrays. … Could someone suggest an effective solution to implement a deep clone function that properly handles nested objects in JavaScript? Your assistance would be greatly appreciated. Thank you!" …