这是我的website。
这是JQuery代码：
(function($){
var MSG_THANK_YOU = 'Thank you for voting!';
var MSG_CANT_VOTE = "You have already voted!";
var MSG_SELECT_ONE = "Please select one option!";
//-----------------------------------------------
// showTip
//-----------------------------------------------
var period_tip_window = 3000;
function showTip( obj, txt, bgcolor )
{
txt = typeof txt !== 'undefined' ? txt : "Saved！";
bgcolor = typeof bgcolor !== 'undefined' ? bgcolor : "#60a060";
var tip_box = obj.find( 'span[ttype="tip_box"]' ).clone();
if ( !tip_box.length )
{
var s = '';
s += "<span ";
s += "style='";
s += "text-align:center;";
s += "padding:10px;";
s += "margin:10px;";
s += "font-size:15px;";
s += "font-weight:bold;";
s += "font-style:italic;";
s += "font-family:times;";
s += "color:#ffffff;";
s += "background-color:" + bgcolor + ";";
s += "border:3px solid #cfcfcf;";
s += "border-radius: 15px;";
s += "-moz-border-radius: 15px;";
s += "-moz-box-shadow: 1px 1px 3px #000;";
s += "-webkit-box-shadow: 1px 1px 3px #000;";
s += "'>";
s += txt;
s += "</span>";
tip_box = $( s );
}
tip_box.css({
"position":"absolute",
"left":"-10000px",
"top":"-10000px"
});
tip_box.appendTo( $( 'body' ) );
tip_box.show();
wt = tip_box.outerWidth(false);
ht = tip_box.outerHeight(true);
var x = obj.offset().left;
var y = obj.offset().top;
var w = obj.width();
var h = obj.height();
var ytd = 10;
var xt = x + w/2 - wt/2;
var yt = y - ht;
tip_box.css( { "left":xt + "px", "top":yt + "px" } );
tip_box.fadeOut( period_tip_window, function() {
tip_box.remove();
});
}
//----------------------------------------------------------------
// CWaitIcon
//----------------------------------------------------------------
function CWaitIcon( url_img )
{
var s = '';
s += "<img ";
s += "src='" + url_img + "'";
s += ">";
this.img = $( s );
this.img.css({
"position":"absolute",
"left":"-10000px",
"top":"-10000px"
});
this.img.hide();
this.img.appendTo( $( 'body' ) );
}
CWaitIcon.prototype =
{
show : function( e )
{
var w = 32;
var h = 32;
this.img.css( { "left":(e.pageX - w/2) + "px",
"top":(e.pageY - h/2) + "px" } );
this.img.show();
},
hide : function()
{
this.img.hide();
}
}
//----------------------------------------------------------------
// CCookie
//----------------------------------------------------------------
function CCookie()
{
}
CCookie.prototype =
{
set : function( name, value, days )
{
days = days || 365;
var date = new Date();
date.setTime( date.getTime() + ( days * 24 * 60 * 60 * 1000 ) );
var expires = "; expires="+date.toGMTString();
document.cookie = name + "=" + value + expires + "; path=/";
},
get : function( name )
{
var nameEQ = name + "=";
var ca = document.cookie.split(';');
for(var i=0; i < ca.length; i++ )
{
var c = ca[i];
while (c.charAt(0)==' ') c = c.substring(1,c.length);
if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
}
return null;
},
del : function( name )
{
document.cookie = name + '=; expires=Fri, 3 Aug 2001 20:47:11 UTC; path=/';
}
}
var Cookie = new CCookie();
//----------------------------------------------------------------
// CAjaxPoll
//----------------------------------------------------------------
function CAjaxPoll( domobj )
{
this.domobj = domobj;
this.form = $( domobj );
this.tid = this.getAttr( 'tid', domobj );
this.b_front = true;
var action = this.getAttr( 'action', domobj );
this.url_server = action;
var pos = action.lastIndexOf("/");
var url_image = 'wait.gif';
if ( pos != -1 )
{
var path = action.substring( 0, pos+1 );
url_image = path + 'images/' + url_image;
}
this.wait_icon = new CWaitIcon( url_image );
}
CAjaxPoll.prototype =
{
//-----------------------------------------------
// getAttr
//-----------------------------------------------
getAttr : function( id_name, obj )
{
if (
( typeof( $( obj ).attr( id_name ) ) == 'undefined' ) ||
( $( obj ).attr( id_name ) == '' ) // for Opera
) return null;
return $( obj ).attr( id_name );
},
//-----------------------------------------------
// getCookieName
//-----------------------------------------------
getCookieName : function()
{
return 'ajax_poll_' + this.tid;
},
//-----------------------------------------------
// checkCookie
//-----------------------------------------------
checkCookie : function()
{
var key = this.getCookieName();
var s = Cookie.get( key );
if ( s == null )
{
Cookie.set( key, 'yes' );
$('.ajax-poll-btn-vote').css('display','none');
return true;
}
else
return false;
},
//-----------------------------------------------
// send
//-----------------------------------------------
send : function( item_tid )
{
var _this = this;
$.post( this.url_server,
{ cmd: "vote", form_tid:this.tid, item_tid:item_tid },
function(data) {
_this.wait_icon.hide();
var res = eval('(' + data + ')');
if ( res.result == 'OK' )
{
_this.items = res.items;
_this.displayStats();
}
else
{
alert( res.result );
}
});
},
//-----------------------------------------------
// run
//-----------------------------------------------
run : function()
{
var _this = this;
//-- [BEGIN] Row mouse over
this.form.find( '.ajax-poll-item' ).mouseover( function() {
$( this ).addClass( "ajax-poll-item-mover" );
}).mouseout( function() {
$( this ).removeClass( "ajax-poll-item-mover" );
});
//-- [END] Row mouse over
//-- [BEGIN] Setup radio buttons
this.form.find( '.ajax-poll-item , .ajax-poll-item-radio' ).each( function(){
var form_tid = _this.tid;
var item_tid = $(this).attr( 'tid' );
var radio = $(this).find( '.ajax-poll-item-radio' ).eq(0);
radio.attr( 'name', form_tid );
radio.attr( 'value', item_tid );
});
//-- [END] Setup radio buttons
//-- [BEGIN] Select an item
this.form.find( '.ajax-poll-item, .ajax-poll-item-radio' ).click( function(e){
//e.preventDefault();
if ( !_this.b_front ) return;
var tid = $(this).attr( 'tid' );
var radio = $(this).find( 'input[value="' + tid + '"]' );
radio.attr( 'checked', 'checked' );
_this.form.find( '.ajax-poll-item' )
.removeClass( "ajax-poll-item-sel" );
$(this).addClass( "ajax-poll-item-sel" );
});
//-- [END] Select an item
//-- [BEGIN] Vote
this.form.find( '.ajax-poll-btn-vote' ).click( function(e){
e.preventDefault();
var form = $(this).parents( '.ajax-poll-form' ).eq(0);
var item_tid = form.find( 'input[name="' + _this.tid + '"]:checked').val();
if ( typeof(item_tid) == 'undefined' ) item_tid = '';
if ( item_tid == '' )
{
showTip( form.find( '.ajax-poll-vote-box' ),
MSG_SELECT_ONE, "#ff0000" );
return
}
else
{
if ( _this.checkCookie() )
{
showTip( form.find( '.ajax-poll-vote-box' ),
MSG_THANK_YOU );
}
else
{
showTip( form.find( '.ajax-poll-vote-box' ),
MSG_CANT_VOTE, "#ff0000" );
return;
}
}
_this.b_front = false;
form.find( '.ajax-poll-item-desc-box' ).hide();
form.find( '.ajax-poll-item-bar' ).css( 'width', 0 );
form.find( '.ajax-poll-item-count' ).html( '' );
form.find( '.ajax-poll-item-perc' ).html( '' );
form.find( '.ajax-poll-item-stats-box' ).show();
form.find( '.ajax-poll-vote-box' ).hide();
form.find('.ajax-poll-item-caption ').hide();
form.find('.ajax-poll-item-sel ').css('background','none');
form.find( '.ajax-poll-item-radio' ).hide();
_this.vote( e, item_tid );
});
//-- [END] Vote
//-- [BEGIN] View result
this.form.find( '.ajax-poll-btn-view' ).click( function(e){
e.preventDefault();
_this.b_front = false;
var form = _this.form;
form.find( '.ajax-poll-item-desc-box' ).hide();
form.find( '.ajax-poll-item-bar' ).css( 'width', 0 );
form.find( '.ajax-poll-item-count' ).html( '' );
form.find( '.ajax-poll-item-perc' ).html( '' );
form.find( '.ajax-poll-item-stats-box' ).show();
form.find( '.ajax-poll-vote-box' ).hide();
form.find('.ajax-poll-item-caption').hide();
form.find( '.ajax-poll-item-radio' ).hide();
form.find('.ajax-poll-item-sel ').css('background','none');
_this.vote( e, '' );
});
//-- [END] View result
//-- [BEGIN] Go Back
/*this.form.find( '.ajax-poll-btn-back' ).click( function(e){
e.preventDefault();
_this.b_front = true;
var form = _this.form;
form.find( '.ajax-poll-item-desc-box' ).show();
form.find( '.ajax-poll-item-stats-box' ).hide();
form.find( '.ajax-poll-vote-box' ).show();
form.find( '.ajax-poll-back-box' ).hide();
form.find( '.ajax-poll-item-radio' ).show();
});*/
//-- [END] Go Back
//-- [BEGIN] Reset cookie
/* this.form.next( '.ajax-poll-btn-reset' ).click( function(e){
e.preventDefault();
Cookie.del( _this.getCookieName() );
alert( "Cookie has been reset!" );
}); */
//-- [END] Reset cookie
},
//-----------------------------------------------
// vote
//-----------------------------------------------
vote : function( e, item_tid )
{
this.wait_icon.show(e);
this.send( item_tid );
},
//-----------------------------------------------
// displayStats
//-----------------------------------------------
displayStats : function()
{
var _this = this;
//-- [BEGIN] Calculate total & Find max count
var total = 0;
var max_cnt = 0;
this.form.find( '.ajax-poll-item' ).each( function(){
var item_tid = $(this).attr( 'tid' );
var cnt = 0;
if ( typeof(_this.items[item_tid]) != 'undefined' )
{
cnt = _this.items[item_tid];
}
else
{
_this.items[item_tid] = cnt;
}
if ( max_cnt < cnt ) max_cnt = cnt;
total += cnt;
});
this.form.find( '.ajax-poll-total-value' ).html( total.toString() + ' vote'
+ ( total == 1 ? '' : 's' ) );
//-- [END] Calculate total & Find max count
//-- [BEGIN] Find max width
var max_w = this.form
.find( '.ajax-poll-item' )
.eq(0)
.width();
max_w = parseInt( max_w );
//-- [END] Find max width
//-- [BEGIN] Show counts, percentage, and bar
this.form.find( '.ajax-poll-item' ).each( function(){
var tid = $(this).attr( 'tid' );
var cnt = ( typeof(_this.items[tid]) == 'undefined' ) ?
0 : _this.items[tid];
var perc = ( total > 0 ) ?
( ( cnt * 100 ) / total ) : 0;
$(this).find( '.ajax-poll-item-count' ).html( cnt.toString() + ' vote'
+ ( cnt == 1 ? '' : 's' ) );
$(this).find( '.ajax-poll-item-perc' ).html( perc.toFixed(1) + '%' );
if ( max_cnt > 0 )
{
var w = ( cnt * max_w ) / max_cnt;
var bar = $(this).find( '.ajax-poll-item-bar' );
bar.css( 'width', 300 );
bar.animate({
width: w
}, 1000 );
}
});
//-- [END] Show counts, percentage, and bar
}
}
//----------------------------------------------------------------
// ready
//----------------------------------------------------------------
$(document).ready(function() {
$( '.ajax-poll-form' ).each( function(){
var obj = new CAjaxPoll( this );
obj.run();
});
});
}(jQuery));
如果每个表单都存在cookie，我如何首先检查页面加载？如果存在cookie，则不会仅显示“.ajax-poll-btn-vote”。
答案 0 :(得分：0)
function getCookie(cookieName) {
var i, x, y, cookiesArray = document.cookie.split(";");
for (i = 0; i < cookiesArray.length; i++) {
x = cookiesArray[i].substr(0, cookiesArray[i].indexOf("="));
y = cookiesArray[i].substr(cookiesArray[i].indexOf("=") + 1);
x = x.replace(/^\s+|\s+$/g, "");
if (x == cookieName) {
return unescape(y);
}
}
}
var cookie = getCookie("yourcookiename");
if (cookie != null) {
... your code here
}