Javascript Trim LTrim和RTrim函数

Posted 2021-02-26

his set of javascript functions trim or remove whitespace from the ends of strings. These functions can be stand-alone or attached as methods of the String object. They can left trim, right trim, or trim from both sides of the string. Rather than using a clumsy loop, they use simple, elegant regular expressions.

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