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index.html
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<!DOCTYPE HTML>
<html>
<head>
<meta charset="utf-8">
<title>演示：jQuery+php实现ajax文件上传</title>
<style type="text/css">
.demo{width:580px; margin:30px auto}
.btn{position: relative;overflow: hidden;margin-right: 4px;}
.btn input {position: absolute;top: 0; right: 0;margin: 0;border: solid transparent;opacity: 0;filter:alpha(opacity=0);}
.progress { position:relative; margin-left:100px; margin-top:-24px; width:200px; border-radius:3px; display:none}
.percent { position:absolute; top:1px; left:2%; color:#fff }
.files{margin:10px 0}
.delimg{margin-left:20px; color:#090; cursor:pointer;margin-top: -6px;}
</style>
<!--jquery1.8.1-->
<script src="http://code.jquery.com/jquery-1.8.1.min.js"></script>
<!--图片jquery.form.js-->
<script type="text/javascript" src="https://www.helloweba.net/demo/upload/jquery.form.js"></script>
<!--bootstrap.css3.3.7-->
<link rel="stylesheet" href="https://cdn.bootcss.com/bootstrap/3.3.7/css/bootstrap.min.css" integrity="sha384-BVYiiSIFeK1dGmJRAkycuHAHRg32OmUcww7on3RYdg4Va+PmSTsz/K68vbdEjh4u" crossorigin="anonymous">
</head>
<body>
<div id="main">
<div class="demo">
<div class="btn btn-success">
<span>上传图片</span>
<input id="fileupload" type="file" name="mypic">
</div>
<!--加载进度-->
<div class="progress progress-striped">
<span class="progress-bar progress-bar-success bar" role="progressbar" aria-valuenow="60" aria-valuemin="0" aria-valuemax="100" style=""></span>
<span class="percent">0%</span >
</div>
<!--显示图片-->
<div id="showimg"></div>
<!--删除图片-->
<div class="files"></div>
</div>
</div>
<script type="text/javascript">
$(function () {
//进度条百分比加载颜色
var bar = $('.bar');
//进度条百分比
var percent = $('.percent');
//图片显示
var showimg = $('#showimg');
//进度条
var progress = $(".progress");
//新增
var files = $(".files");
var btn = $(".btn span");
$(".demo").wrap("<form id='myupload' action='action.php' method='post' enctype='multipart/form-data'></form>");
//点击上传图片
$("#fileupload").change(function(){
//提交表单
$("#myupload").ajaxSubmit({
dataType: 'json',
beforeSend: function() {
//显示进度条
progress.show();
//进度条为0
var percentVal = '0%';
bar.width(percentVal);
percent.html(percentVal);
btn.html("上传中...");
},
//上传进度
uploadProgress: function(event, position, total, percentComplete) {
//进度条加载长度数据是number型
var percentVal = percentComplete + '%';
bar.width(percentVal)
percent.html(percentVal);
},
success: function(data) {
//上传成功返回参数
files.html("<b>"+data.name+"("+data.size+"k)</b> <span class='delimg btn btn-danger' rel='"+data.pic+"'>删除</span>");
showimg.html("<img src='"+data.pic+"'>");
btn.html("上传图片");
},
error:function(xhr){
//上传失败
btn.html("上传失败");
bar.width('0')
files.html(xhr.responseText);
},
clearForm: true
});
});
//删除图片js
$(".delimg").live('click',function(){
//获取图片地址
var pic = $(this).attr("rel");
$.post("action.php?act=delimg",{imagename:pic},function(msg){
if(msg=='delete'){
files.html("删除成功.");
//删除图片效果
showimg.empty();
//隐藏进度条
progress.hide();
}else{
alert(msg);
}
});
});
});
</script>
</body>
</html>