js對象操做

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">html

<html xmlns="http://www.w3.org/1999/xhtml">數組

<head>ui

<title>對象操做</title>spa

<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />xml

<meta name="description" content="布爾教育 http://www.itbool.com" />htm

<script>對象

var str="helloworld";ip

console.log(str.substr(1,2));utf-8

var a=['春','下','秋','冬'];it

document.write(a.join('a'));//增長元素

var str1='春,的,是,是de';

console.log(str1.split(','));//拆成數組

</script>

</head>

    <body>

     

    </body>

</html>

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