抓取网页中a标签的链接代码,JS代码库,德仔网

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【JS】抓取网页中a标签的链接

作者:wowqhb / 发布于2015/5/19/ 800


	<!doctype html>
	<script type="text/javascript" src="jquery-1.7.2.min.js"></script>
	<script type="text/javascript">
	function filterLink(str){
	 str = str.replace(/&lt;/g, '\<');
	 str = str.replace(/&gt;/g, '\>');
	 console.log(str);
	 var r1 = /(\<a\s)(.*?)(\<\/a\>)/g,
	 r2 = /href\=[\'\"]([http|https|ftp][^\'\"\{\}]*)[\'\"]/,
	 tmp = str.match(r1),
	 res = [];
	 console.log(tmp.length);
	
	 for(var i = 0; i < tmp.length; i++){
	
	 if(/href/.test(tmp[i])){
	 try
	 {
	 res.push(r2.exec(tmp[i])[1]);
	 }
	 catch(e)
	 {
	 console.log('Not matched:' + tmp[i]);
	 }
	
	 }
	 }
	 return res;
	}
	$(function(){
	 $.ajax({
	 url:'data.php',
	 async: true,
	 type: 'GET',
	 dataType: 'text',
	 success: function(data){
	 $('#st').hide();
	 var arr = filterLink(data);
	 var len = arr.length;
	 for(var i = 0; i < len; i++ ){
	 document.write(arr[i]+'<br/>');
	 }
	 }
	 });
	})
	</script>
	<div id='st'>loading...</div>
	</html>

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　a标签　　链接　

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