如何从JavaScript远程网站获取数据？

Question

I want to get the data from http://whatismyip.com/automation/n09230945.asp using JavaScript. How can I do this?

I can get the data from ASP.NET by using WebClient class but how can we get data using JavaScript?

Answer 1

You will need to use AJAX . However, unless the service provides a JSONP interface, AJAX is limited to getting pages from the same domain as the page it runs on. See: Same origin policy .

Answer 2

Use YQL - http://developer.yahoo.com/yql/guide/yql-code-examples.html#yql_html_scraper

It essentially acts as a proxy to grab page data for you through their service. You can interact with it solely with JavaScript.

Answer 3

绕过相同原始策略的方法是在自己的服务器上用ASP编写一个脚本来获取数据，然后通过页面中的AJAX获取该脚本。