JavaScript Array object

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What is an array?

Numerical values ​​may be stored comprise strings, numbers, time, Chinese, variables, constants, etc., used for storing variables, array object is to effect: a separate variable names used to store a series of values;

How to create an array?

<!DOCTYPE html>
<html>
 <head>
  <meta charset="utf-8">
  <title></title>
  <script type="text/javascript">
  //声明变量i
   var i;
   //创建数组
   var mycars = new Array();
   //声明变量a的值为(变量)
   var a="变量";
   // 数字
   mycars[0] = 1
   // 英文
   mycars[1] = "number";
   // 字符串
   mycars[2] = "。:”》《";
   // 变量
   mycars[3] = a;
   // 循环输出数组
   for (i=0;i<mycars.length;i++){
    document.write(mycars[i] + "<br />");
   }
  </script>
 </head>
 <body>
 </body>
</html>

Facts have proved that digital does not require a semicolon and quotation marks can be declared, the string needs quotation marks and semicolons, semicolon variables need not require quotes, quotes browser mistaken for a string

Simple way

<!DOCTYPE html>
<html>
 <head>
  <meta charset="utf-8">
  <title></title>
  <script type="text/javascript">
   // 声明变量i
   var i;
   // 新建数组并赋值
   var mycars=new Array("Saab","Volvo","BMW");
   // 循环输出数组
   for (i=0;i<mycars.length;i++){
    document.write(mycars[i] + "<br />");
   }
  </script>
 </head>
 <body>
 </body>
</html>

Such an approach would be more simple and can be very effective in reducing the amount of code and browsers efficiency

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Origin blog.csdn.net/qq_44894205/article/details/102740591