I was reading a JS book and there was a question asking for output of below: <pre class="prettyprint"><code>3e+3 </code></pre> It is giving me <code>3000</code>. Can someone explain why?

This is called scientific notation, the <code>xey</code> means "<code>x</code> times <code>10</code> to the power of <code>y</code>" In your case, <code>3 * Math.pow(10, 3); // 3000</code>

<code>e</code> declares an exponent. This is known as exponential or scientific notation. <code>3e+3</code> is equal to <code>3e3</code> (the <code>+</code> defines a positive number rather than addition), which is equal to <code>3 * (10^3)</code> which is equal to <code>3 * (10*10*10)</code> which is equal to 3000.

3e+3 = 3000 - JavaScript query

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javascript

I was reading a JS book and there was a question asking for output of below:

3e+3

It is giving me 3000. Can someone explain why?

256

asked Dec 02 '22 18:12

JS-

2 Answers

This is called scientific notation, the xey means "x times 10 to the power of y"

In your case, 3 * Math.pow(10, 3); // 3000

answered Dec 10 '22 12:12

Paul S.

e declares an exponent. This is known as exponential or scientific notation.

3e+3 is equal to 3e3 (the + defines a positive number rather than addition), which is equal to 3 * (10^3) which is equal to 3 * (10*10*10) which is equal to 3000.