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If you look at the following function how come this is returning NAN NAN NAN and how to fix it. 
 

<pre><code class="code-10 nolinks" id="code-10-28698280-1">var Maths = {
 numbers: [1, 2, 3],
 multiplier: 2,
 multiplied: function () {
 return this.numbers.map(function(n) {
 return n * this.multiplier;
 });
 }
};

Maths.multiplied(); // [NaN, NaN, NaN]
</code></pre>
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If you look at the following function how come this is returning NAN NAN NAN and how to fix it.

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Why is this returning NAN NAN NAN

JavaScript is a dynamic, object-based language commonly used for client-side scripting in web browsers. Recently, server side JavaScript frameworks have also emerged. JavaScript runs on nearly every operating system and  in almost every mainstream web browser.