$(‘#pac_recipe‘).change(function() {        var imgsrc = http://www.mamicode.com/‘‘;        if(this.files && this.files[0]) { //chrome firefox            imgsrc = http://www.mamicode.com/window.URL.createObjectURL(this.files[0]);         } else {            //IE下，使用滤镜              this.select();            imgsrc = document.selection.createRange().text;        }            });