comma if remove JavaScript chop/slice/trim off last character in string

5 Answers

You can use slice! You just have to make sure you know how to use it. Positive #s are relative to the beginning, negative numbers are relative to the end.

javascript remove specific character from string

I have a string, 12345.00, and I would like it to return 12345.0.

I have looked at trim, but it looks like it is only trimming whitespace and slice which I don't see how this would work. Any suggestions?

The easiest method is to use the slice method of the string, which allows negative positions (corresponding to offsets from the end of the string):

var s = "your string";
var withoutLastFourChars = s.slice(0, -4);

If you needed something more general to remove everything after (and including) the last underscore, you could do the following (so long as s is guaranteed to contain at least one underscore):

var s = "your_string";
var withoutLastChunk = s.slice(0, s.lastIndexOf("_"));
// withoutLastChunk == "your"

JavaScript chop/slice/trim off last character in string

You can use the substring function:

var str = "12345.00";
str = str.substring(0, str.length - 1); // "12345.0"

This is the accepted answer, but as per the conversations below, the slice syntax is much clearer:

var str = "12345.00";
str = str.slice(0, -1); // "12345.0"

You can use the substring method of JavaScript string objects:

s = s.substring(0, s.length - 4)

It unconditionally removes the last four characters from string s.

However, if you want to conditionally remove the last four characters, only if they are exactly _bar:

var re = /_bar$/;
s.replace(re, "");

C# TrimEnd() equivalent in javascript

This should work:\s+$/g, '');