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demo.html
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39 lines (37 loc) · 658 Bytes
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<!DOCTYPE html>
<html>
<head>
<title></title>
</head>
<body>
<script type="text/javascript">
class ProxySandbox{
constructor(){
const rawWindow = window;
const fakeWindow = {};
const proxy = new Proxy(fakeWindow,{
set(target,p,value){
target[p] = value;
return true
},
get(target,p){
return target[p] || rawWindow[p];
}
})
this.proxy = proxy;
}
}
const sandbox1 = new ProxySandbox();
const sandbox2 = new ProxySandbox();
window.a = 1;
((window) => {
window.a = 'hello';
console.log(window.a)
})(sandbox1.proxy);
((window) => {
window.a = 'world';
console.log(window.a)
})(sandbox2.proxy)
</script>
</body>
</html>