Octals and Hexadecimals
Question: Is there a way to use octal and hexadecimal numbers in JavaScript?
Answer: Yes. In JavaScript you can use octals and hexadecimals.
The following are examples of octal numbers:
01234
-077
0312
Positive octal numbers must begin with
0 (zero)
and negative octal numbers must begin with
-0.
And these are examples of hexadecimal numbers:
0xFF
-0xCCFF
0xabcdef
Positive hexadecimals must begin with
0x
and negative hexadecimals must begin with -0x.
When you need to convert an octal or hexadecimal string to a number,
use the function parseInt(str,base). Consider these examples:
octalStr='377';
num = parseInt(octalStr,8); // num now holds 255
hexStr='7F';
num = parseInt(hexStr,16); // num now holds 127
The second argument of
parseInt specifies the base of the number
whose representation is contained in the original string. This argument
can be any integer from 2 to 36.
JavaScripter.net.
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