[JavaScript] Remove Leading and Trailing Whitespaces

This post is a brief summary of links in the references.

Remove (Trim) Leading Whitespace (similar to Python lstrip)

function lstrip(str) {
  return str.replace(/^\s+/g, "");
}

function rstrip(str) {
  return str.replace(/\s+$/g, "");
}

function strip(str) {
  return str.replace(/^\s+|\s+$/g, "");
}

References:

[1]	Trimming a string in JavaScript

[2]	trim - String strip() for JavaScript? - Stack Overflow

[3]	Faster JavaScript Trim

[4]	String.prototype.trim() - JavaScript \| MDN

[5]	trim Method (String) (JavaScript)

[6]	JavaScript RegExp s Metacharacter - W3Schools