PHP+Ajax无刷新上传头像预览

演示效果看这里:http://www.erdangjiade.com/js/880.html

上传头像区域<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>引入jQuery库和plupload上传组件<script type="text/javascript" src="jquery.js"></script>
<script type="text/javascript" src="plupload/plupload.full.min.js"></script>plupload单图片上传配置var uploader_avatar = 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: ['avatar_uplpad_btn'], // 上传按钮
url: "ajax.php", //远程上传地址
flash_swf_url: 'js/plugins/plupload/Moxie.swf', //flash文件地址
silverlight_xap_url: 'js/plugins/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: false, //true:ctrl多文件上传, false 单文件上传
init: {
FilesAdded: function(up, files) { //文件上传前

uploader_avatar.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
var data = eval("(" + info.response + ")");//解析返回的json数据
$("#avatar_pic").html("<img src='" + data.pic + "'/>")
},
Error: function(up, err) { //上传出错的时候触发
alert(err.message);
}
}
});
uploader_avatar.init();