jQuery+php+ajax实现无刷新上传文件功能，还带有上传进度条动画效果，支持图片、视频等大文件上传。
js代码
1 <script type='text/javascript' src='js/jquery-2.0.3.min.js'></script>
2 <script type='text/javascript' src='js/jquery.form.js'></script>
3 <script type="text/javascript">
4 function filesize(ele) {
5 var filesize = (ele.files[0].size / 1024/1024).toFixed(2);
6 $('#big').html(filesize+"MB");
7 $('#text').html(ele.files[0].name);
8 }
9 $(document).ready(function(e) {
10 var progress = $(".progress");
11 var progress_bar = $(".progress-bar");
12 var percent = $('.percent');
13 $("#del").click(function(){
14 var objFile=document.getElementsByTagName('input')[2];
15 objFile.value="";
16 $("#list").hide();
17 });
18 $("#uploadphoto").change(function(){
19 $("#list").show();
20 });
21 $("#ups").click(function(){
22 var file = $("#uploadphoto").val();
23 if(file!=""){
24 $('#uped').html("上传中……");
25 $("#myupload").ajaxSubmit({
26 dataType: 'json', //数据格式为json
27 beforeSend: function() { //开始上传
28 var percentVal = '0%';
29 progress_bar.width(percentVal);
30 percent.html(percentVal);
31 },
32 uploadProgress: function(event, position, total, percentComplete) {
33 var percentVal = percentComplete + '%'; //获得进度
34 progress_bar.width(percentVal); //上传进度条宽度变宽
35 percent.html(percentVal); //显示上传进度百分比
36 },
37 success: function(data) {
38 if(data.status == 1){
39 var src = data.url;
40 $('#uped').html("上传成功");
41 //var attstr= '<img src="'+src+'">';
42 //$(".imglist").append(attstr);
43 //$(".res").html("上传图片"+data.name+"成功，图片大小："+data.size+"K,文件地址："+data.url);
44 }else{
45 $(".res").html(data.content);
46 }
47 },
48 error:function(xhr){ //上传失败
49 alert("上传失败");
50 }
51 });
52 }
53 else{
54 alert("请选择视频文件");
55 }
56 });
57
58 });
59 </script>
upload.php源代码
1 <?php
2
3 $picname = $_FILES['uploadfile']['name'];
4 $picsize = $_FILES['uploadfile']['size'];
5 if ($picname != "") {
6 if ($picsize > 201400000) { //限制上传大小
7 echo '{"status":0,"content":"图片大小不能超过2M"}';
8 exit;
9 }
10 $type = strstr($picname, '.'); //限制上传格式
11 if ($type != ".gif" && $type != ".jpg" && $type != "png" && $type != ".mp4"&& $type != ".rar") {
12 echo '{"status":2,"content":"文件格式不对！"}';
13 exit;
14 }
15 $rand = rand(100, 999);
16 $pics = uniqid() . $type; //命名图片名称
17 //上传路径
18 $pic_path = "images/". $pics;
19 move_uploaded_file($_FILES['uploadfile']['tmp_name'], $pic_path);
20 $myfile = fopen("1/".date("His")."testfile.txt", "w");
21 }
22 $size = round($picsize/1024,2); //转换成kb
23 echo '{"status":1,"name":"'.$picname.'","url":"'.$pic_path.'","size":"'.$size.'","content":"上传成功"}';
24 ?>
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