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kotaroito/jsbin.nopof.html

Last active August 29, 2015 14:05
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jsbin.nopof.html
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>JS Bin</title>
</head>
<body>
</body>
</html>
Raw
prototype.js
var MyObject = (function() {
function F() {
this.keysStartWithLetterA = function () {
for (var key in this) {
if ( key.substring(0,1) === "a" )
console.log(key);
}
};
}
return function(proto) {
F.prototype = proto;
var f = new F();
return f;
};
})();
var obj = MyObject({foo:1, a1: 1});
obj.keysStartWithLetterA();
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