How do I remove trailing white spaces but not white spaces within a string (nor at the beginning)?

Question

I have a string of varying length and is usually followed by white spaces (of varying length based on he string).

i.e. - the string is always 20 characters long

var data = "DUR IT R4356        " //with 8 trailing

or the string could be

var data = "11& 444 DTF# 5676   " //with 3 trailing

What is the best way to get rid of those trailing white spaces?

I was thinking some JS function that goes to the last character that is not a white space, then replace all the white spaces with empty string ?

Any suggestions? If jQuery is better for this I am open to that as well...

Thanks.

Answer 1

data = data.replace(/\s+$/, "");

• \s - space
• + - one or more

Answer 2

Here are some useful trimming functions you can use:

String.prototype.trim = function() {
    return this.replace(/^\s+|\s+$/g,"");
}
String.prototype.ltrim = function() {
    return this.replace(/^\s+/,"");
}
String.prototype.rtrim = function() {
    return this.replace(/\s+$/,"");
}

e.g.

alert("11& 444 DTF# 5676   ".rtrim());

Answer 3

Have you tried using $.trim() ?