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associative arrays in JavaScript

What will be the output of the JavaScript code?

What will be the output of the code below?
var abc = { x: 10 };
var result = (function () {
    delete abc.x;
    return abc.x;
})();

alert(result);

Answers:- The output would be “undefined”. The delete operator is used to delete the property of an object.

Here “abc” is an object which has the property “x”. It's a “self-invoking” function and we will delete the x property from object “abc”. When you try to return a deleted property, it will return “undefined”.


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