js原生图片上传（IE10+）

该方法试用与IE10+，IE10以下并没兼容

function picUolader(ele,form,img){
    ele.unbind().change(function(){
        var oFile = this.files[0];//获取图片的路径
        var reader = new FileReader();
        reader.readAsDataURL(oFile);
        reader.onload = function(e){//图片加载时的函数
            if(img){
                img.attr("src",e.target.result);
                layer.load(2);
            }else{
                return;
            };
        };
        var options = {
            success:function(data){
                responseData = data.data;
                console.log(responseData);
                layer.closeAll('loading');
                layer.msg("上传成功");

            }
        };
        form.ajaxForm(options);//利用到了第三方插件jquery.form.js
        form.submit();
    });
    return responseData;
};