Javascript parsing int

Question

When I do this:

parseInt(39,16)

I get this:

What does the second argument means?

I read this:

radix   Optional. A number (from 2 to 36) that represents the numeral system to be used

But what do I get with the number 16?

You can just prepend a + => +'39' = 39

elclanrs
– elclanrs

2013-03-04 07:28:21 +00:00
Commented Mar 4, 2013 at 7:28 — elclanrs
– elclanrs, Commented Mar 4, 2013 at 7:28

kamituel · Accepted Answer · 2013-03-04 07:23:39Z

2

The second argument is the number system you're using - in your case "39" is hexadecimal, because you passed "16" as a second argument.

Please refer to the documentation.

So if you want to get decimal number, use:

parseInt(39, 10);

answered Mar 4, 2013 at 7:23

kamituel

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Danny Beckett · Accepted Answer · 2013-03-04 07:23:36Z

0

For example, a radix of 10 indicates to convert from a decimal number, 8 octal, 16 hexadecimal, and so on. For radices above 10, the letters of the alphabet indicate numerals greater than 9. For example, for hexadecimal numbers (base 16), A through F are used.

ParseInt documentation

answered Mar 4, 2013 at 7:23

Danny Beckett

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