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js--字符串操作函数
意外的博客
Original
790 people have browsed it
<!DOCTYPE html>
<html>
<head>
	<title>字符串操作函数</title>
	<mate charest="utf-8">	<!-- 设置编码格式,以免乱码; -->
		<script type="text/javascript">
		
			var text='hello worid i like you';
			// length:计算字符串长度;
				// document.write(text.length);
			// charAt(数字):返回指定索引位置的字符。
				// document.write(text.charAt(0));
			//indexOf();获取子字符串索引开始位置;
				// document.write(text.indexOf('i'))
			//lastIndexOf();指出最后一个子字符串开始的位置;
				// document.write(text.lastIndexOf('k'))
			// substring(开始,结束);返回一个子字符串;
				// document.write(text.substring(2,3));
			// substr(开始,长度);返回一个子字符串;
				// document.write(text.substr(2,3));
			// replace('要的字被替换符串','替换成的字符串');
				// document.write(text.replace('you','php中文网'));	
			// concat();连接两个或多个字符串;
				// var a='你的名字'	;
				// var b='luxiansheng';
				// 	document.write(text.concat(' ',a,' ',b));
				
		</script>
</head>
<body>

</body>
</html>


<!-- length:计算字符串长度; -->
<!-- charAt(数字):返回指定索引位置的字符。 -->

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