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js space removal techniques to remove spaces before and after the string and left and right spaces_javascript techniques

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Release： 2016-05-16 17:19:21

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Remove the spaces before and after the string, on the left and on the right

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,"")} 

Add a trim method to the String object.
You can use it like this in the future:

Copy code 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); 

Related labels：

js去空格前后空格左右空格

source：php.cn

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