var url = 'http://baidu.com/api/';
var result;
var XHR = new XMLHttpRequest();
XHR.open('GET',url,true);
XHR.send();
XHR.onreadystatechange = function() {
if (XHR.readyState == 4 && XHR.status == 200) {
result = XHR.response;
console.log(result);
}
}
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