Tips for removing leading and trailing spaces in javascript

Removing spaces in js does not allow you to directly use trim to delete the space. It is not as easy as we thought in js, especially the trim function that is less reliable than the code that I want to delete spaces before and after.

The Code is as follows:

Function String. prototype. trim () {return this. replace (/(^/s *) | (/s * $)/g, "");} // remove the Left and Right Spaces
Function String. prototype. Ltrim () {return this. replace (/(^/s *)/g, "") ;}// remove the left space
Function String. prototype. Rtrim () {return this. replace (/s * $)/g, "") ;}// remove the right space

Example

The Code is as follows: