Last active
August 29, 2015 14:05
-
-
Save westc/39c97243080191246aac to your computer and use it in GitHub Desktop.
Surrounds the string with the specified string(s).
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
(function(RGX, STR, undefined) { | |
/** | |
* Surrounds the string with the specified string(s). | |
* @param {string} wrap1 | |
* The string to precede this string. | |
* @param {string=} opt_wrap2 | |
* The string to follow this string. Defaults to the value of `wrap1` if | |
* not given. | |
* @param {string=} opt_wrap1rep | |
* The string to replace all occurrences of `wrap1` within this string. | |
* Defaults to the value of `wrap1` if not given. | |
* @param {string=} opt_wrap2rep | |
* The string to replace all occurrences of `opt_wrap2` within this | |
* string. Defaults to the value of `opt_wrap1rep` if not given. | |
* @return {string} | |
* Returns this string surrounded by the wrap string(s). | |
*/ | |
String.prototype.wrap = function(wrap1, opt_wrap2, opt_wrap1rep, opt_wrap2rep) { | |
var me = this, min, min1, min2; | |
opt_wrap2 = opt_wrap2 == undefined ? wrap1 : opt_wrap2; | |
if (arguments.length > 2) { | |
opt_wrap1rep = opt_wrap1rep == undefined ? wrap1 : opt_wrap1rep; | |
opt_wrap2rep = opt_wrap2rep == undefined ? opt_wrap1rep : opt_wrap2rep; | |
me = me.replace( | |
new RegExp('(' + wrap1.replace(RGX, STR) + ')|' + opt_wrap2.replace(RGX, STR), 'g'), | |
function (match, isLeft) { | |
return isLeft ? opt_wrap1rep : opt_wrap2rep; | |
} | |
); | |
} | |
return wrap1 + me + opt_wrap2; | |
}; | |
})(/\W+/g, '\\$&'); |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment