ajax请求node.js接口时出现 No 'Access-Control-Allow-Origin' header is present on the requested resource错误
            时间:2015-03-06 18:33:57  
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        ajax请求node.js接口出现了如下的错误:
XMLHttpRequest cannot load http://xxx.xxx.xx.xx:8888/getTem?cityId=110105&date=2015-03-04. No ‘Access-Control-Allow-Origin‘ header is present on the requested resource. Origin ‘null‘ is therefore not allowed access.
百度了一下,原来是缺少Access-Control-Allow-Origin属性,那么在node.js输出时把Access-Control-Allow-Origin属性加上就好了,如下
response.writeHead(200, {‘Content-Type‘: ‘text/json;charset=utf-8‘,‘Access-Control-Allow-Origin‘:‘*‘}); 
谷歌查了一下,原来Access-Control-Allow-Origin来限制请求域名的。 点我查看该属性的解释
原文:http://www.cnblogs.com/hark0623/p/4318719.html
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