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<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
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<body>
<script>
var xhr = null;
if(window.XMLHttpRequest){
xhr = new XMLHttpRequest();
}else{
xhr = new ActiveXObject('Microsoft.XMLHttp');
}
console.log(xhr.readyState);
xhr.open("get","http://developer.duyiedu.com/edu/testAjaxCrossOrigin",true);
console.log(xhr.readyState);
xhr.send();
console.log(xhr.readyState);
xhr.onreadystatechange = function(){
console.log(xhr.readyState);
if(xhr.readyState == 4 && xhr.status == 200){
console.log(xhr.responseText);
document.getElementById('text').innerText = xhr.responseText;
var jsonStr = JSON.parse(xhr.responseText);
console.log(jsonStr.msg);
document.getElementById('jsonStr').innerText = jsonStr.msg;
}
}
</script>
<div id="text"></div>
<div id="jsonStr"></div>
</body>
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