[應用案例]PHP+Ajax無重新整理上傳頭像預覽

<div class="avatar_area"> 
    <a href="javascript:void(0);"class="avatar_uplpad_btn" id="avatar_uplpad_btn"></a> 
    <div id="avatar_pic"> 
        <img alt="充值" src="http://www.erdangjiade.com/Public/images/other/banner.jpg"/> 
    </div>  </div>

<script type="text/javascript" src="jquery.js"></script>  <script type="text/javascript" src="plupload/plupload.full.min.js"></script>

var uploader_avatar = new plupload.Uploader({//建立例項的構造方法 
    runtimes: 'gears,html5,html4,silverlight,flash', //上傳外掛初始化選用那種方式的優先順序順序 
    browse_button: ['avatar_uplpad_btn'], // 上傳按鈕 
    url: "ajax.php", //遠端上傳地址 
    flash_swf_url: 'js/plugins/plupload/Moxie.swf', //flash檔案地址 
    silverlight_xap_url: 'js/plugins/plupload/Moxie.xap', //silverlight檔案地址 
    filters: { 
        max_file_size: '10mb', //最大上傳檔案大小（格式100b, 10kb, 10mb, 1gb） 
        mime_types: [//允許檔案上傳型別 
            {title: "files", extensions: "jpg,png,gif,jpeg"} 
        ] 
    }, 
    multi_selection: false, //true:ctrl多檔案上傳, false 單檔案上傳 
    init: { 
        FilesAdded: function(up, files) { //檔案上傳前 
 
            uploader_avatar.start(); 
        }, 
        UploadProgress: function(up, file) { //上傳中，顯示進度條 
            var percent = file.percent; 
            $("#" + file.id).find('.bar').css({"width": percent + "%"}); 
            $("#" + file.id).find(".percent").text(percent + "%"); 
        }, 
        FileUploaded: function(up, file, info) { //檔案上傳成功的時候觸發 
            var data = eval("(" + info.response + ")");//解析返回的json資料 
            $("#avatar_pic").html("<img  src='" + data.pic + "'/>") 
        }, 
        Error: function(up, err) { //上傳出錯的時候觸發 
            alert(err.message); 
        } 
    }  }); 
uploader_avatar.init();