How do I convert my HEX string into a number?

Question

I wish to convert the whiteHex variable to a decimal using the parseInt() function, and store it in a variable, whiteDecimal.

var whiteHex = 'ffffff';

var whiteDecimal = parseInt(whiteHex);

I am unsure if the above is correct or not. The reason being, that I then wish to subtract 1 from whiteDecimal and store it in a variable offWhiteDecimal. This is where I am getting stuck. How can I subtract one from the ffffff hex value? Am I missing something within the parseInt function?

`parseInt(str,radix)`, use radix 16, it is not inferred. – Aug 11 '19 at 15:42 — , Aug 11 '19 at 15:42

score 2 · Accepted Answer · answered Aug 11 '19 at 15:43

2

You're looking for this:

var whiteDecimal = parseInt(whiteHex, 16)
console.log(whiteDecimal - 1);

ref: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/parseInt#Syntax

answered Aug 11 '19 at 15:43

Nickolay

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Thank you! This did the trick! – Karen Kinsella Aug 11 '19 at 16:09

How do I convert my HEX string into a number?

1 Answers1