Js Array operation

Source: Internet
Author: User

<! DOCTYPE html>
<title>please Enter your title</title>
<meta charset= "Utf-8" >
<meta name= "Author" content= "Tanzhou College-Teacher Fei" >
<style type= ' text/css ' >
*{margin:0; padding:0;}


<script type= "Text/javascript" >
var arr = [1,2,3,4];

Arr.length; Readable and writable
ARR[0]; Readable and writable
Arr.length = 8;
Alert (arr);

var a = Arr.push (1, 2);
var a = Arr.unshift (' Punk ', ' empty Mountain ');

arr = [1,2,3,4,[4,5,6]]

Alert (arr);

Arr.shift ();
Alert (arr);

Arr.splice (6, 0, ' ah ');
Alert (arr);
var arr = [5,6,7,8,2,1,5,6];

Arr.sort (function (x, y) {
return y-x;

Alert (arr);

var arr = [n/a];

var a = Arr.concat ([4,5,6]);

alert (a.length);

var a = Arr.join (' | ');

alert (a);


Js Array operation

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