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eduardolundgren/createDummyNullable.html

Last active August 29, 2015 14:08
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createDummyNullable.html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Document</title>
</head>
<body>
<script>
function createDummyNullable(target) {
return new Proxy(target, {
get: function(wrap, name) {
return wrap[name] === undefined ? null : wrap[name];
}
});
}
var content = createDummyNullable({
key1: 1,
key2: 2
});
content.key3 = 3;
console.log(content.key1); // 1
console.log(content.key2); // 2
console.log(content.key3); // 3
console.log(content.doesNotExist); // null
console.log(content.toString); // Keep existing
</script>
</body>
</html>
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