trim() function for ActionScript and JavaScript
By Alexey Gavrilov on February 7, 2010
Strangely ActionScript doesn’t have trim() function, JavaScript doesn’t have it either.
I needed the one lately and googled it but a few solutions that came up looked weird (using several for() cycles for example). So I came up with this one — if you know how to make it simpler or shorter, l’d be very interested to hear your solution.
Old school style:
function trim(s) {
return s.match(/^s*(.*?)s*$/)[1];
}
var s = trim(" well done "); // s = "well done"
Modern style:
String.prototype.trim = function() {
return this.match(/^s*(.*?)s*$/)[1];
}
var s = " even better ".trim(); // s = "even better"
Enjoy!
(categories: Technology, Solutions box)
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Ex-Metalinker Mike Kyurshin commented:
They use cycles in AS because support for regular expressions only appears in ActionScript 3.0. For JS it is common to use regular expressions: http://www.google.ru/search?q=javascript+trim
Different ways of regex usage are compared here for example:
http://blog.stevenlevithan.com/archives/faster-trim-javascript
Comment by Alexey Gavrilov — February 8, 2010 @ 12:46 pm