Let's say I have a hexadecimal, for example "0xdc"
, how do I convert this hexadecimal string
to a hexadecimal Number
type in JS?
Literally just losing the quotes. The Number()
constructor and parseInt()
just converted it to an integer between 0 and 255, I just want 0xdc
.
EDIT:
To make my point more clear:
I want to go from "0xdc"
(of type String
), to 0xdc
(of type Number
)
How to convert a string to a number in JavaScript using the unary plus operator ( + ) The unary plus operator ( + ) will convert a string into a number. The operator will go before the operand. We can also use the unary plus operator ( + ) to convert a string into a floating point number.
To convert a hexadecimal string to a numberUse the ToInt32(String, Int32) method to convert the number expressed in base-16 to an integer. The first argument of the ToInt32(String, Int32) method is the string to convert. The second argument describes what base the number is expressed in; hexadecimal is base 16.
Given hexadecimal number is 7CF. To convert this into a decimal number system, multiply each digit with the powers of 16 starting from units place of the number.
We can use the '+' unary operator , Number(), parseInt() or parseFloat() function to convert string to number.
You can use the Number
function, which parses a string into a number according to a certain format.
console.log(Number("0xdc"));
JavaScript uses some notation to recognize numbers format like -
0x
= Hexadecimal0b
= Binary0o
= Octalif you want convert string to hex representation, you can covert to number with 16 as radix.
parseInt("0xdc", 16) // gives you 0xdc
If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
Donate Us With