php仿新浪微博多图片上传带删除功能

上传html代码

<div class="photo_upload_box_outside blur_area" id="photo_upload_box_outside" tabindex="2000"> 
    <div class="photo_upload_box"> 
        <a class="photo_upload_close"href="javascript:void(0);"onclick="photo_upload_close()"></a> 
        <h1>本地上传</h1> 
        <p class="upload_num">共<span id="uploaded_length">0</span>张，还能上传<span id="upload_other">9</span>张</p> 
        <ul id="ul_pics" class="ul_pics clearfix"> 
            <li id="local_upload"><img src="images/local_upload.png" id="btn2"/></li> 
        </ul> 
        <div class="arrow_layer"> 
            <span class="arrow_top_area"><i class="arrow_top_bg"></i><em class="arrow_top"></em></span> 
        </div> 
    </div> 
</div>

上传代码

var upload_total = 9;//最多上传数量 
var uploader = new plupload.Uploader({//创建实例的构造方法 
    runtimes: 'gears,html5,html4,silverlight,flash', //上传插件初始化选用那种方式的优先级顺序 
    browse_button: ['btn', 'btn2'], // 上传按钮 
    url: "ajax.php", //远程上传地址 
    flash_swf_url: 'plupload/Moxie.swf', //flash文件地址 
    silverlight_xap_url: 'plupload/Moxie.xap', //silverlight文件地址 
    filters: { 
        max_file_size: '10mb', //最大上传文件大小（格式100b, 10kb, 10mb, 1gb） 
        mime_types: [//允许文件上传类型 
            {title: "files", extensions: "jpg,png,gif,jpeg"} 
        ] 
    }, 
    multi_selection: true, //true:ctrl多文件上传, false 单文件上传 
    init: { 
        FilesAdded: function(up, files) { //文件上传前 
            var length_has_upload = $("#ul_pics").children("li").length; 
            if (files.length >= upload_total) { //超过上传总数量则隐藏 
                $("#local_upload").hide(); 
            } 
            var li = ''; 
            plupload.each(files, function(file) { //遍历文件 
                if (length_has_upload <= upload_total) { 
                    li += "<li class='li_upload' id='" + file['id'] + "'><div class='progress'><span class='bar'></span><span class='percent'>0%</span></div></li>"; 
                } 
                length_has_upload++; 
            }); 
            $("#ul_pics").prepend(li); 
            uploader.start(); 
        }, 
        UploadProgress: function(up, file) { //上传中，显示进度条 
            var percent = file.percent; 
            $("#" + file.id).find('.bar').css({"width": percent + "%"}); 
            $("#" + file.id).find(".percent").text(percent + "%"); 
        }, 
        FileUploaded: function(up, file, info) { //文件上传成功的时候触发 
            showPhotoUploadBox($('#btn')); 
            var uploaded_length = $(".img_common").length; 
            if (uploaded_length <= upload_total) { 
                var data = eval("(" + info.response + ")");//解析返回的json数据 
                $("#" + file.id).html("<input type='hidden'name='pic[]' value='" + data.pic + "'/><input type='hidden'name='pic_name[]' value='" + data.name + "'/>\n\ 
                <img class='img_common' src='" + data.pic + "'/><span class='picbg'></span><a class='pic_close' onclick=delPic('" + data.pic + "','" + file.id + "')></a>"); 
            } 
            showUploadBtn(); 
        }, 
        Error: function(up, err) { //上传出错的时候触发 
            alert(err.message); 
        } 
    } 
}); 
uploader.init(); 
 
function delPic(pic, file_id) { //删除图片 参数1图片路径  参数2 随机数 
    $.post("del.php", {pic: pic}, function(data) { 
        $("#" + file_id).remove(); 
        showUploadBtn(); 
    }) 
} 
function showUploadBtn() { //是否显示上传按钮 
    var uploaded_length = $(".img_common").length; 
    $("#uploaded_length").text(uploaded_length); 
    var other_length = (upload_total - uploaded_length) > 0 ? upload_total - uploaded_length : 0; 
    $("#upload_other").text(other_length); 
    var uploaded_length = $(".img_common").length; 
    if (uploaded_length >= upload_total) { 
        $("#local_upload").hide(); 
    } else { 
        $("#local_upload").show(); 
    } 
} 
function showPhotoUploadBox(obj) { //显示上传弹出层 
    var left = obj.offset().left; 
    var top = obj.offset().top + 26; 
    $("#photo_upload_box_outside").css({"left": left, "top": top}).show() 
} 
function photo_upload_close() { 
    $("#photo_upload_box_outside").fadeOut(500, function() { 
        $(".li_upload").remove(); 
    }) 
} 
$(function() { 
    $(".blur_area").hover(function() { 
        $("body").attr('is_hover', 1); 
    }, function() { 
        $("body").attr('is_hover', 0); 
    }); 
    $(".blur_area").blur(function() { 
        if ($("body").attr("is_hover") == 0) { 
            photo_upload_close(); 
        } 
    }) 
})