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<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <title>JS Bin</title>
</head>
<body>
</body>
</html>
 
window.x = 1;
var ctx = { x: 2 };
function bind(func, ctx) {
    return func.call(ctx);
}
function testThis() { console.log(this.x); }
console.log(testThis()); // 1
var boundFunction = bind(testThis, ctx);
console.log(boundFunction()); // 2
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anonymouspro
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