实时监测contenteditable(可编辑文档)的内容发生改变

addEvent(doc,‘input‘,function(){
    //do something...
});

var oldValue = context.getSource(), newValue;

[‘blur‘,‘keyup‘,‘mouseup‘].forEach(function(type){
    addEvent(doc,type,function(){
             newValue = context.getSource();
            if(oldValue != newValue){
                //do something...
                oldValue = newValue;
            }
        });
});

(function ($) {
 $.fn.wysiwygEvt = function () {
  return this.each(function () {
   var $this = $(this);
   var htmlold = $this.html();
   $this.bind(‘blur keyup paste copy cut mouseup‘, function () {
    var htmlnew = $this.html();
    if (htmlold !== htmlnew) {
     $this.trigger(‘change‘)
    }
   })
  })
 }
})(jQuery);


//调用：$(‘.wysiwyg‘).wysiwygEvt();