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SITE_ID

layui.use('upload', function(){
    var $ = layui.jquery
        ,upload = layui.upload;
    var uploadInst = upload.render({
        elem: '#upload'
        ,url: '/index.php?s=from&c=home&m=upload&siteid='+{SITE_ID}
        ,before: function(obj){
            //預(yù)讀本地文件示例，不支持ie8
            obj.preview(function(index, file, result){
                $('#imgUpload').attr('src', result); //圖片鏈接（base64）
            });
        }
        ,done: function(res){
            //如果上傳失敗
            if(res.code > 0){
                return layer.msg('上傳失敗');
            }
            //上傳成功
        }
        ,error: function(){
            //演示失敗狀態(tài)，并實(shí)現(xiàn)重傳
            var demoText = $('#demoText');
            demoText.html('<span style="color: #FF5722;">上傳失敗</span> <a class="layui-btn layui-btn-xs demo-reload">重試</a>');
            demoText.find('.demo-reload').on('click', function(){
                uploadInst.upload();
            });
        }
    });


});

原理很簡(jiǎn)單，提交data數(shù)據(jù)加上就行了，

沒(méi)看懂