本文介绍了javascript:如何获取网页的内容的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
在JS中,可以获取将其分配给变量的网页内容?例如,为什么以下玩具代码不起作用?
var req = new XMLHttpRequest();
req.open('GET','http://www.google.com',false);
req.send(null);
if(req.status == 200)
alert(req.responseText);
有更好的方法/代码吗?
解决方案
使用服务器端代理,例如读取所需页面的php页面,然后通过javascript对该代理进行ajax调用:
var req = new XMLHttpRequest();
req.open('GET','proxy.php?url = http://www.google.com',false);
req.send(null);
if(req.status == 200){
alert(req.responseText);
}
In JS is it possible to fetch the content of a web page assigning it to a variable?For example, why the following toy code does not work?
var req = new XMLHttpRequest();
req.open('GET', 'http://www.google.com', false);
req.send(null);
if(req.status == 200)
alert(req.responseText);
Is there a better method/code?
解决方案
use a server-side proxy like a php-page that reads the desired page and then make ajax calls to that proxy through javascript :
var req = new XMLHttpRequest();
req.open('GET', 'proxy.php?url=http://www.google.com', false);
req.send(null);
if(req.status == 200) {
alert(req.responseText);
}
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