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ajax 接收JSON数据报错

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这个是后台的json数据,数组
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var request = JSON.parse(xhr.responseText); //请求的json
这一行一直报错!
后台的php页面打开json是没问题的,不知道什么错误


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本人已经解决,原因是请求的是本地文件,而不是通过http协议,可以在请求文件名前+http://localhost


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