Remove trailing character(s) from string in Javascript

Question

What is an acceptable way to remove a particular trailing character from a string?

For example if I had a string:

> "item,"

And I wanted to remove trailing ','s only if they were ','s?

Thanks!

Answer 1

Use a simple regular expression:

var s = "item,";
s = s.replace(/,+$/, "");

Answer 2

if(myStr.charAt( myStr.length-1 ) == ",") {
    myStr = myStr.slice(0, -1)
}

Answer 3

A function to trim any trailing characters would be:

 function trimTrailingChars(s, charToTrim) { var regExp = new RegExp(charToTrim + "+$"); var result = s.replace(regExp, ""); return result; } function test(input, charToTrim) { var output = trimTrailingChars(input, charToTrim); console.log('input:\\n' + input); console.log('output:\\n' + output); console.log('\\n'); } test('test////', '/'); test('///te/st//', '/');