JSONP原理
<button id="btn">click</button>
<script type="text/javascript">
function $(str){
return document.getElementById(str)
}
function CreateScript(src) {
var Scrip=document.createElement('script');
Scrip.src=src;
document.body.appendChild(Scrip);
}
function jsonpcallback(json) {
console.log(json);//Object { email="中国", email2="中国222"}
}
$('btn').onclick=function(){
CreateScript("http://localhost:51335/somejson?callback=jsonpcallback")
}
</script>
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