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Posted By

noah on 07/20/07


Tagged

css toggle library DOM name conditional binary className utilities mattkruse hasclass


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toggle classname

Published in: JavaScript 

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  1. ****************************************************************
  2.   ** Toggle ClassName
  3.   ** Works on els with multiple classnames
  4. *****************************************************************/
  5.  toggleClassname: function (el, newClassname, defaultClassname) {
  6.     if (this.hasClass( el, defaultClassname)){
  7.       var re = new RegExp("(^|\\s)" + defaultClassname + "(\\s|$)"); 
  8.       el.className = el.className.replace(re, ' '+ newClassname +' ');
  9.     } else if ( CB.iCanHasClass( el, newClassname)){
  10.       var re = new RegExp("(^|\\s)" + newClassname + "(\\s|$)"); 
  11.       el.className = el.className.replace(re, ' '+ defaultClassname +' ');
  12.       //alert(el.className);
  13.     } else {
  14.       el.className += ' ' + newClassname;
  15.     }
  16.   },
  17.  
  18.  /****************************************************************
  19.   ** [I Can] Has Class? (Matt Kruse)
  20.   ****************************************************************/
  21.  /*	
  22.  ** Kruse's hasClass, with slight modification	
  23.  ** Determine if an object or class string contains a given class.
  24.  ** see http://groups.google.com/group/comp.lang.javascript/browse_thread/thread/b68cac304ee6de78/e445c1df18698a3f?lnk=gst&q=hasclass&rnum=3
  25.  */
  26.  hasClass : function(obj, className) {
  27.     if (typeof obj == 'undefined' || obj==null || !RegExp) { return false; }  //should I be checking all my objects for undefined?  I feel like it never comes up --N.S. at 9:51:57 PM EST on Wednesday, July 18 2007
  28.     var re = new RegExp("(^|\\s)" + className + "(\\s|$)");
  29.     if (typeof(obj)=="string") {
  30.       return re.test(obj);
  31.     }
  32.     else if (typeof(obj)=="object" && obj.className) {
  33.       return re.test(obj.className);
  34.     }
  35.     return false;
  36.   }

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