A relatively simple and practical way to use three versions of regular js to remove spaces_javascript skills

Remove the spaces before and after, left and right of the string respectively

Copy the code 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,"")}