How to Convert Double to Hexadecimal using javascript with 0x [duplicate]

Question

I have a variable like this:

var currency = "4,990.17"
currency.replace(/[$,]+/g,"");
var currency2 = parseDouble(currency)-0.1;

How can I set currency2 to be hexadecimal with 0x in front of it?

I would like my string hexadecimal value of 4999.17 to become:

0x137E.2B851EB851EB851EB852

Why are you subtracting 0.1? Where did 4999.17 come from - did you mean 4990.17? — Ryan M
– Ryan M ♦, Commented Sep 4, 2020 at 20:32

DoubleJG · Accepted Answer · 2020-09-03 11:35:01Z

1

Once converted to a number you can call .toString([radix]) ( MDN Docs ) with an optional radix which is in the range 2 through 36 specifying the base to use for representing numeric values.

var currency = 4990.17; 
hexCurrency = currency.toString(16);
console.log(hexCurrency);

This returns 137E.2B851EB851EB851EB852 or you can add 0x by doing hexCurrency = "0x" + currency.toString(16);

edited Sep 3, 2020 at 11:35

answered Sep 2, 2020 at 15:41

DoubleJG

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2 Comments

Akshat Goel Over a year ago

Shouldn't the radix, in this case, be 16?

DoubleJG Over a year ago

Yes it should be sorry, updated the answer now. Not sure how that slipped

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