"how can i convert an integer to hex with a fix length in javascript?" Code Answer

number.prototype.tostring() can convert a number to hexadecimal when 16 is passed as the argument (base 16):

new number(154).tostring(16) //'9a'

however, this will not have leading zeroes. if you wish to prepend the leading zeroes you can provide a string of 4 zeroes '0000' to concatenate with '9a', then use slice to grab just the last 4 characters:

var value = 154;
var hex = ('0000' + value.tostring(16).touppercase()).slice(-4); //009a

the sequence of events is displayed like this:

154 -> '9a' -> '9a' -> '00009a' -> '009a'

By Stacksatty on April 21 2022

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