iterating array in javascript

values returned by the function are automatically passed to the next item as the first argument string of array elements Arrayobj.join (separator); Returns a string that connects each element value of an array, separated by a separator in the middle. toLocaleString, toString, valueof: Can be seen as a special use of join, not commonly used Tosource () returns the source code for this object ToString

The following small series will introduce you to the array traversal forEach () and map () methods in JavaScript and the compatible writing method. I think it is quite good. Now I will share it with you and give you a reference. Let's take a look at it with xiaobian. • Principle: • Advanced browsers support the forEach Method Syntax: Both forEach and map support two parameters: one is the callback function

This article mainly introduces the use cases of JavaScript Array functions unshift, shift, pop, and push. This article first explains how to declare arrays, and then provides some examples for the use of the four functions, for more information, see How to declare an array There are several methods to declare arrays in s. The Code is as follows: Var tmp = []; /

Today, in the 51js forum, a netizen published a fast sorting algorithm implemented by ctipt PT, which also involved the data sorting application in javasctipt in the previous days. In order to increase the sorting speed, it uses a fast sorting algorithm. But What surprised me was that, one of the following netizens replied that the sort method of Array itself in javascript was the fastest, faster than the f

First joke, 1. Just saw a swimming, think of company organization to Sanya Tourism, the boss jumped the sea, all kinds of struggle, fished up the boss first sentence: I remember I can swim AH. 2. Daughter-in-law said: Husband sorry, I put your new bike crashed into pieces! Husband: Nothing baby, if you are well, it is sunny! Daughter-in-law said: "Husband you are too poetic." Hubby: Roll bastard, I'll kill you! The concept of an array

This article describes how to implement mutual conversion between Array and String in Javascript, and describes how to use the toString and split Methods in JavaScript, for more information about how to convert Array and String in Javascript, see the following example. We wi

The JavaScript array is essentially an object that converts the subscript of an array into a string and uses it as a property, so it is significantly slower than a real array, but it can be used more easily. Change oneself pop,push,reverse,shift,sort,splice,unshift, do not change oneself concat,join,slice,indexof,last

The importance of arrays in programming languages is self-evident, and in JavaScript, arrays are one of the most commonly used objects, arrays are ordered collections of values, and because of the weak type, the arrays in JavaScript are flexible and powerful, It's not like a Java. Strong-type advanced language arrays can hold only the same type or its subtype elements,