js deep copy array

1. Shallow copy vs deep copyThe copy in this article can also be referred to as a copy, which in this article is considered to be the same meaning of copy and copy. In addition, this article only discusses the replication of complex data types in JS

ConceptThere are two ways to copy objects: Shallow copy and deep copy. As the name implies, shallow copy, not copy the object itself, just copy the pointer to the object; Deep copy copies the entire object memory directly into another memory.A

Copy, in JS, is divided into shallow copy and deep copy. How are these two differentiated? And how is it achieved?The distinction between shades of a copyFirst of all, in JS, is divided into basic data types and complex data types,Underlying data

JavaScript arrays and methods for deep copies of objects (copying arrays or copying objects) prefacein JS, the copying of arrays and objects is only a shallow copy if the use = number is used for copying. As demonstrated :As above, arr the

One, heap memory and stack memoryBoth the heap and the stack are divided in memory to store the area, the stack is automatically allocated memory space, it is automatically released by the system, the heap is dynamically allocated memory, the size

Simple analysis: A shallow copy is a copy of a layer, deep-seated object-level copy of the reference; a deep copy is a multilayer copy, and each level of data is copied;Summary: When a shallow copy of the data is a basic data type, then as the

Shallow copy and deep copy of JS objecti10630226 font: [Increase decrease] Type: Reprint time: 2016-09-05 I want to commentThis article mainly for you in detail the JavaScript object of the shallow copy and deep copy code, with a certain reference

JS data type Six basic data types: Boolean. Boolean value, True and false. Null. A special keyword that indicates a null value. JavaScript is case-sensitive, so null is completely different from NULL, NULL, or other

This article mainly introduces the shallow copy and deep copy code of JavaScript objects in detail, which has some reference value, interested friends can refer to this article to share with you the shallow copy and deep copy code of JavaScript

Because JavaScript is divided into primitive types and reference types (similar to Java, C #). Array is a reference type, so directly with the = number assignment, only the address of the source array (or pointer) assigned to the destination array,