目錄結構如下：
其中files文件夾中存放上傳來的圖片。
index.html代碼如下：
<!DOCTYPE HTML>
<html>
<head>
<meta charset="utf-8">
<style type="text/css">
.demo{width:620px; margin:30px auto}
.demo p{line-height:32px}
.btn{position: relative;overflow: hidden;margin-right: 4px;display:inline-block;*display:inline;padding:4px 10px 4px;font-size:14px;line-height:18px;*line-height:20px;color:#fff;text-align:center;vertical-align:middle;cursor:pointer;background-color:#5bb75b;border:1px solid #cccccc;border-color:#e6e6e6 #e6e6e6 #bfbfbf;border-bottom-color:#b3b3b3;-webkit-border-radius:4px;-moz-border-radius:4px;border-radius:4px;}
.btn input {position: absolute;top: 0; right: 0;margin: 0;border: solid transparent;opacity: 0;filter:alpha(opacity=0); cursor: pointer;}
.progress { position:relative; margin-left:100px; margin-top:-24px; width:200px;padding: 1px; border-radius:3px; display:none}
.bar {background-color: green; display:block; width:0%; height:20px; border-radius: 3px; }
.percent { position:absolute; height:20px; display:inline-block; top:3px; left:2%; color:#fff }
.files{height:22px; line-height:22px; margin:10px 0}
.delimg{margin-left:20px; color:#090; cursor:pointer}
</style>
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.8.1/jquery.min.js"></script>
<script type="text/javascript" src="jquery.form.js"></script>
</head>
<body>
<!--<form id='myupload' action='action.php' method='post' enctype='multipart/form-data'>-->
<p id="main">
<span class="demo">
<input id="fileupload" type="file" name="mypic">
<span class="btn">上傳</span>
</span>
</p>
<!--</form>-->
<script type="text/javascript">
$(function () {
var bar = $('.bar');
var percent = $('.percent');
var showimg = $('#showimg');
var progress = $(".progress");
var files = $(".files");
var btn = $(".btn span");
$("p").wrap("<form id='myupload' action='action.php' method='post' enctype='multipart/form-data'></form>");
$("#fileupload").change(function(){
$("#myupload").ajaxSubmit({
dataType: 'json',
beforeSend: function() {
showimg.empty();
progress.show();
var percentVal = '0%';
bar.width(percentVal);
percent.html(percentVal);
btn.html("上傳中...");
},
uploadProgress: function(event, position, total, percentComplete) {
var percentVal = percentComplete + '%';
bar.width(percentVal);
percent.html(percentVal);
},
success: function(data) {
files.html("<b>"+data.name+"("+data.size+"k)</b> <span class='delimg' rel='"+data.pic+"'>刪除</span>");
var img = "http://demo.helloweba.com/upload/files/"+data.pic;
showimg.html("<img src='"+img+"'>");
btn.html("添加附件");
},
error:function(xhr){
btn.html("上傳失敗");
bar.width('0')
files.html(xhr.responseText);
}
});
});
$(".delimg").live('click',function(){
var pic = $(this).attr("rel");
$.post("action.php?act=delimg",{imagename:pic},function(msg){
if(msg==1){
files.html("刪除成功.");
showimg.empty();
progress.hide();
}else{
alert(msg);
}
});
});
});
</script>
</body>
</html>
jquery.form.js代碼如下：
"use strict"
feature == $("<input type='file'/>").get(0).files !=== window.FormData !===
(!'ajaxSubmit: skipping submit process - no element selected' method, action, url, $form = ( options == 'function'== .attr('method'= .attr('action'= ( action === 'string') ? $.trim(action) : ''= url || window.location.href || ''
url = (url.match(/^([^#]+)/)||[])[1= $.extend(|| 'GET'/^https/i.test(window.location.href || '') ? 'javascript:false' : 'about:blank'
veto =.trigger('form-pre-serialize', ['ajaxSubmit: submit vetoed via form-pre-serialize trigger'
(options.beforeSerialize && options.beforeSerialize(, options) === 'ajaxSubmit: submit aborted via beforeSerialize callback' traditional = ( traditional ==== elements = qx, a = ==
(options.beforeSubmit && options.beforeSubmit(a, , options) === 'ajaxSubmit: submit aborted via beforeSubmit callback'
.trigger('form-submit-validate', [a, 'ajaxSubmit: submit vetoed via form-submit-validate trigger' q == ( q ? (q + '&' + (options.type.toUpperCase() == 'GET'+= (options.url.indexOf('?') >= 0 ? '&' : '?') += ;
= q;
callbacks =
(!options.dataType && oldSuccess = options.success || fn = options.replaceTarget ? 'replaceWith' : 'html' = (data, status, xhr) {
context = options.context || ;
( i=0, max=callbacks.length; i < max; i++||
fileInputs = $('input:file:enabled[value]', );
hasFileInputs = fileInputs.length > 0 mp = 'multipart/form-data' multipart = ($form.attr('enctype') == mp || $form.attr('encoding') == fileAPI = feature.fileapi &&"fileAPI :" + shouldUseFrame = (hasFileInputs || multipart) && !
(options.iframe !== && (options.iframe ||
((hasFileInputs || multipart) &&
( k=0; k < elements.length; k++=
.trigger('form-submit-notify', [
serialized = $.param(extraData).split('&' len = result = (i=0; i < len; i++= serialized[i].split('='0])] = decodeURIComponent(part[1
formdata = ( i=0; i < a.length; i++ serializedData = ( p = s = $.extend('POST'
s.xhr = xhr == percent = 0 position = event.loaded || event.position;
total == Math.ceil(position / total * 100= beforeSend == =
form = $form[0 useProp = !! ($(':input[name=submit],:input[id=submit]'
alert('Error: Form elements must not have name or id of "submit".'
(i=0; i < elements.length; i++='disabled', 'disabled'= $.extend(= s.context ||= 'jqFormIO' + (== $io.attr('name' (!'name'== $('<iframe name="' + id + '" src="'+ s.iframeSrc +'" />''absolute', top: '-1000px', left: '-1000px'= $io[0= {
aborted: 00'n/a' e = (status === 'timeout' ? 'timeout' : 'aborted''aborting upload... ' +.aborted = 1
{
io.contentWindow.document.execCommand('Stop''src', s.iframeSrc);
xhr.error ="ajaxError"=
(g && 0 === $.active++"ajaxStart""ajaxSend" (s.beforeSend && s.beforeSend.call(s.context, xhr, s) === --
sub == (n && != s.extraData ||= (sub.type == "image"+'.x'] =+'.y'] = CLIENT_TIMEOUT_ABORT = 1 SERVER_ABORT = 2 doc = frame.contentWindow ? frame.contentWindow.document : frame.contentDocument ?
csrf_token = $('meta[name=csrf-token]').attr('content' csrf_param = $('meta[name=csrf-param]').attr('content' (csrf_param &&= s.extraData ||=
t = $form.attr('target'), a = $form.attr('action'
form.setAttribute('target' (!'method', 'POST' (a !='action'
(! s.skipEncodingOverride && (!method || /post/'multipart/form-data''multipart/form-data'
= setTimeout(() { timedOut =
state ='state = ' + (state && state.toLowerCase() == 'uninitialized'50'Server abort: ' , e, ' (', e.name, ')'=
extraInputs = ( n
($.isPlainObject(s.extraData[n]) && s.extraData[n].hasOwnProperty('name') && s.extraData[n].hasOwnProperty('value''<input type="hidden" name="'+s.extraData[n].name+'">').attr('value'0'<input type="hidden" name="'+n+'">').attr('value'0 (!
$io.appendTo('body''onload''load', cb, 15
form.setAttribute('action''target''target'10);
data, doc, domCheckCount = 50 (xhr.aborted ||='cannot access response document: '= (e === CLIENT_TIMEOUT_ABORT &&'timeout' (e == SERVER_ABORT &&'server abort' (!doc || doc.location.href ==
(!'onload''load', cb, status = 'success' 'timeout' isXml = s.dataType == 'xml' || doc.XMLDocument ||'isXml='+ (!isXml && window.opera && (doc.body === || ! (--
log('requeing onLoad callback, DOM not available'250
docRoot = doc.body ?= docRoot ? docRoot.innerHTML : = doc.XMLDocument ?= 'xml'= headers = {'content-type'
= Number( docRoot.getAttribute('status') ) ||= docRoot.getAttribute('statusText') || dt = (s.dataType || '' scr = /(json|script|text)/ (scr ||
ta = doc.getElementsByTagName('textarea')[0=
xhr.status = Number( ta.getAttribute('status') ) ||= ta.getAttribute('statusText') ||
pre = doc.getElementsByTagName('pre')[0 b = doc.getElementsByTagName('body')[0= pre.textContent ? = b.textContent ? (dt == 'xml' && !xhr.responseXML &&=== 'parsererror'= errMsg = (e ||'error caught: '= 'error'= errMsg = (e ||'upload aborted'= (xhr.status) {
status = (xhr.status >= 200 && xhr.status < 300 || xhr.status === 304) ? 'success' : 'error'
(status === 'success''success'"ajaxSuccess" (errMsg ===="ajaxError""ajaxComplete" (g && ! --"ajaxStop"=
setTimeout( (!= 100 toXml = $.parseXML || (s, doc) {
= ActiveXObject('Microsoft.XMLDOM'= 'false'= ( DOMParser()).parseFromString(s, 'text/xml' (doc && doc.documentElement && doc.documentElement.nodeName != 'parsererror') ? doc : parseJSON = $.parseJSON ||
window['eval']('(' + s + ')' httpData = ( xhr, type, s ) {
ct = xhr.getResponseHeader('content-type') || ''= type === 'xml' || !type && ct.indexOf('xml') >= 0= xml ? (xml && data.documentElement.nodeName === 'parsererror''parsererror' (s &&= ( data === 'string' (type === 'json' || !type && ct.indexOf('json') >= 0= (type === "script" || !type && ct.indexOf("javascript") >= 0= = options ||= options.delegation &&
(!options.delegation && .length === 0 o = { s: .selector, c: (!$.isReady &&'DOM not ready, queuing ajaxForm'
log('terminating; zero elements found by selector' + ($.isReady ? '' : ' (DOM not ready)' 'submit.form-plugin', 'click.form-plugin', 'submit.form-plugin', 'click.form-plugin', 'submit.form-plugin''click.form-plugin'
options = (!e.isDefaultPrevented()) {
target = $el = (!($el.is(":submit,input:image"
t = $el.closest(':submit' (t.length === 0= t[0 form = = (target.type == 'image' (e.offsetX !==== ( $.fn.offset == 'function' offset == e.pageX -= e.pageY -= e.pageX -= e.pageY -
setTimeout(() { form.clk = form.clk_x = form.clk_y = ; }, 100
$.fn.ajaxFormUnbind = .unbind('submit.form-plugin click.form-plugin'= a = (.length === 0 form = [0 els = semantic ? form.getElementsByTagName('*' (!(i=0, max=els.length; i < max; i++== (! (semantic && form.clk && el.type == "image"
(!el.disabled && form.clk ==+'.x', value: form.clk_x}, {name: n+'.y'= $.fieldValue(el, (v && v.constructor ==(j=0, jmax=v.length; j < jmax; j++ (feature.fileapi && el.type == 'file' && ! files = (j=0; j < files.length; j++
a.push({ name: n, value: '' (v !== && v != 'undefined' (!semantic &&
$input = $(form.clk), input = $input[0= (n && !input.disabled && input.type == 'image'+'.x', value: form.clk_x}, {name: n+'.y'=
$.param(= a =.each( n = (! v = $.fieldValue( (v && v.constructor == ( i=0,max=v.length; i < max; i++ (v !== && v != 'undefined'
= ( val=[], i=0, max=.length; i < max; i++ el = v = (v === || v == 'undefined' || (v.constructor == Array && ! (v.constructor === n = el.name, t = el.type, tag = (successful ==== (successful && (!n || el.disabled || t == 'reset' || t == 'button' ||== 'checkbox' || t == 'radio') && !el.checked ||== 'submit' || t == 'image') && el.form && el.form.clk != el ||== 'select' && el.selectedIndex == -1 (tag == 'select' index = (index < 0 a = [], ops = one = (t == 'select-one' max = (one ? index+1( i=(one ? index : 0); i < max; i++ op = v = (!v) {
v = (op.attributes && op.attributes['value'] && !(op.attributes['value'].specified)) ?= .each('input,select,textarea', = $.fn.clearInputs = re = /^(?:color|date|datetime|email|month|number|password|range|search|tel|text|time|url|week)$/i;
.each( t = .type, tag = (re.test(t) || tag == 'textarea'.value = '' (t == 'checkbox' || t == 'radio'.checked = (tag == 'select'.selectedIndex = -1
( (includeHidden === && /hidden/.test(t)) || includeHidden == 'string' && $(.value = ''= .each(
( .reset == 'function' || ( .reset == 'object' && != (b ==== .each(.disabled = != (select ==== .each( t = (t == 'checkbox' || t == 'radio'.checked = (.tagName.toLowerCase() == 'option' $sel = $().parent('select' (select && $sel[0] && $sel[0].type == 'select-one'
$sel.find('option').selected(.selected =
$.fn.ajaxSubmit.debug =
(! msg = '[jquery.form] ' + Array.prototype.join.call(arguments,'' (window.console && (window.opera &&
