Javascript space removal tips: remove the front and back strings, and remove the Left and Right spaces _ javascript tips-js tutorial

JavaScript code will surely be used as a space. In the next article, we will introduce in detail how to remove spaces on the left and right sides of the string respectively, if you are interested, you can refer to the following strings to separate the front and back, left and right Spaces

The Code is as follows:

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

Adds a trim method to the String object.
You can use it as follows:

The Code is as follows:

Var s = "abc ";
S = s. trim (); // s is a String. You can use the trim method just defined.
Alert (s );