用js上传图片到数据库，在数据库只显示图片名

下面是js代码 ，求大神看看
$(function(){
    var delParent;
    var defaults = {
        fileType         : ["jpg","png","bmp","jpeg"],   // 上传文件的类型
        fileSize         : 1024 * 1024 * 10                  // 上传文件的大小 10M
    };
        /*点击图片的文本框*/
    $(".file").change(function(){     
        var idFile = $(this).attr("id");
        var file = document.getElementById(idFile);
        var imgContainer = $(this).parents(".z_photo"); //存放图片的父亲元素
        var fileList = file.files; //获取的图片文件
        var input = $(this).parent();//文本框的父亲元素
        var imgArr = [];
        //遍历得到的图片文件
        var numUp = imgContainer.find(".up-section").length;
        var totalNum = numUp + fileList.length;  //总的数量
        if(fileList.length > 5 || totalNum > 5 ){
            alert("上传图片数目不可以超过5个，请重新选择");  //一次选择上传超过5个 或者是已经上传和这次上传的到的总数也不可以超过5个
        }
        else if(numUp < 5){
            fileList = validateUp(fileList);
            for(var i = 0;i<fileList.length;i++){
             var imgUrl = window.URL.createObjectURL(fileList[i]);
                 imgArr.push(imgUrl);
             var $section = $("<section class='up-section fl loading'>");
                 imgContainer.prepend($section);
             var $span = $("<span class='up-span'>");
                 $span.appendTo($section);
            
             var $img0 = $("<img class='close-upimg'>").on("click",function(event){
                    event.preventDefault();
                    event.stopPropagation();
                    $(".works-mask").show();
                    delParent = $(this).parent();
                });   
                $img0.attr("src","img/a7.png").appendTo($section);
             var $img = $("<img class='up-img up-opcity'>");
                 $img.attr("src",imgArr[i]);
                 $img.appendTo($section);
             var $p = $("<p class='img-name-p'>");
                 $p.html(fileList[i].name).appendTo($section);
             var $input = $("<input id='taglocation' name='taglocation' value='' type='hidden'>");
                 $input.appendTo($section);
             var $input2 = $("<input id='tags' name='tags' value='' type='hidden'/>");
                 $input2.appendTo($section);
              
           }
        }
        setTimeout(function(){
             $(".up-section").removeClass("loading");
              $(".up-img").removeClass("up-opcity");
         },450);
         numUp = imgContainer.find(".up-section").length;
        if(numUp >= 5){
            $(this).parent().hide();
        }
    });
   
   
   
    $(".z_photo").delegate(".close-upimg","click",function(){
           $(".works-mask").show();
           delParent = $(this).parent();
    });
        
    $(".wsdel-ok").click(function(){
        $(".works-mask").hide();
        var numUp = delParent.siblings().length;
        if(numUp < 6){
            delParent.parent().find(".z_file").show();
        }
         delParent.remove();
    });
   
    $(".wsdel-no").click(function(){
        $(".works-mask").hide();
    });
        
        function validateUp(files){
            var arrFiles = [];//替换的文件数组
            for(var i = 0, file; file = files[i]; i++){
                //获取文件上传的后缀名
                var newStr = file.name.split("").reverse().join("");
                if(newStr.split(".")[0] != null){
                        var type = newStr.split(".")[0].split("").reverse().join("");
                        console.log(type+"===type===");
                        if(jQuery.inArray(type, defaults.fileType) > -1){
                            // 类型符合，可以上传
                            if (file.size >= defaults.fileSize) {
                                alert(file.size);
                                alert('您这个"'+ file.name +'"文件大小过大');   
                            } else {
                                // 在这里需要判断当前所有文件中
                                arrFiles.push(file);   
                            }
                        }else{
                            alert('您这个"'+ file.name +'"上传类型不符合');   
                        }
                    }else{
                        alert('您这个"'+ file.name +'"没有类型, 无法识别');   
                    }
            }
            return arrFiles;
        }
        
   
   
})