我正在使用制表符 http://www.hieu.co.uk/blog/index.php/tabswitch/
我正在尝试添加额外的功能来返回标签的总数 我试图在函数内返回一个值 getLength中的alert语句输出正确的值 但返回的值是未定义的
这是我的代码：
//the function within tabswitch function:
var getLength = function(){
var $totalPages = parseInt((Obj.length));
alert('getLength function totalPages = '+$totalPages);
$('.pagetotal').html(' '+$totalPages); //this correctly sets the element to the correct value
return ($totalPages); // this returns undefined?
}
function setTabIndex(){
$totalPages = $('.SlideTab').tabSwitch('getlength'); //undefined?
$mypage = parseInt($(".SlideTab").tabSwitch('index')+1);
$currentIndex = parseInt($(".SlideTab").tabSwitch('index'));
$('.pageon').html('Page '+$mypage+' of');
alert('totalPages = '+$totalPages+' myPage = '+$mypage+' currentindex = '+$currentIndex); //returns undefined for total pages??
setButtons();
};
完整的标签开关代码：
/*
* .tabSwitch
* Version: 1.0
* http://www.hieu.co.uk/blog/index.php/tabswitch/
*
* Copyright (c) 2009 Hieu Pham - http://www.hieu.co.uk
* COMMON DEVELOPMENT AND DISTRIBUTION LICENSE (CDDL)
* http://www.opensource.org/licenses/cddl1.php
*
* Date: 14/04/2009
*/
(function($){
$.fn.tabSwitch = function(command, Arguements, EndFunction) {
//Default value should be set here
var defaults = {
type : "toggle", //Type of effect
cols : 2, //This only used when you're using type = table
toggle : "fade", //This specific which type of toggle effect
ease : 40,
easeType: "linear", //This isn't work for this version yet
loopback: 0, //If it's 1 it will loop when it reach the ends
width : 400, // Size of the viewport
height : 400,
index : 0, //The current tab index
speed : 500, //Speed of the animation
interval: 5000, //The interval of auto-animate
step : 1, //How many step you want to use in moveStep
wrapperClass : "", //You could add extra class for the wraper
viewportClass : "" //You could add extra class for the viewport
};
var Args = $.extend(defaults, Arguements);
var Obj = this;
var $totalPages = (Obj.length);
//For quicker access
var jFirstObj = Obj.eq(1);
var DOMFirstObj = Obj.eq(1).get(0);
if(!$.isFunction(EndFunction)){
//Set the index in the cache
var Callback = function(){
$.data(DOMFirstObj, "index", Args.index);
};
}
else{
var Callback = function(){
$.data(DOMFirstObj, "index", Args.index);
EndFunction();
};
}
//Back up orginal information
StoreToCache = function(){
//Now store the tab type in the cache for further use
$.data(DOMFirstObj, "type", Args.type);
$.data(DOMFirstObj, "toggle", Args.toggle);
$.data(DOMFirstObj, "cols", Args.cols);
$.data(DOMFirstObj, "ease", Args.ease);
$.data(DOMFirstObj, "easeType", Args.easeType);
$.data(DOMFirstObj, "index", Args.index);
$.data(DOMFirstObj, "loopback", Args.loopback);
//Before do anything to the object, keep a backup so we could revert it
if(jFirstObj.attr('style')){
$.data(DOMFirstObj, "orgAttr", jFirstObj.attr('style'));
}else{
$.data(DOMFirstObj, "orgAttr", "");
}
}
//Remove all the data in cache and reset the object back to original
backFromCache = function(){
Obj.attr('style',$.data(DOMFirstObj, "orgAttr"));
var ViewPortObj = $("#ViewPort"+$.data(DOMFirstObj));
ViewPortObj.replaceWith(Obj);
//Remove auto if it's running
stopAuto();
//Clear cacke
$.removeData(DOMFirstObj);
}
//Execute when input comment is create
var createTab = function(){
//Back up orginal information
StoreToCache();
//Construct the form
//Set all the CSS for the list div, this;s the common setting for all type of tab
if(Args.width) Obj.width(Args.width);
if(Args.height) Obj.height(Args.height);
//A big wraper around and change some CSS of the wrap
var WraperSelector = "WideDiv" + $.data(DOMFirstObj);
Obj.wrapAll("<div id='"+WraperSelector +"'></div>");
var WraperObj = $("#"+WraperSelector);
WraperObj.addClass(Args.wraperClass);
WraperObj.css({"position":"relative"});
WraperObj.wrap("<div id='" +WraperSelector.replace("WideDiv","ViewPort") + "'></div>")
//Now create the viewport with the input size
var ViewPortObj = $("#" + WraperSelector.replace("WideDiv","ViewPort"));
ViewPortObj.width(Args.width);
ViewPortObj.height(Args.height);
ViewPortObj.css({"display":"block","overflow":"hidden","position":"relative"});
ViewPortObj.addClass(Args.viewportClass);
switch(Args.type)
{
case "slide":
Obj.css({"float":"left"});
//A big wraper around and change some CSS of the wrap
WraperObj.width((Args.width+2) * Obj.length);
//Now create the viewport with the input size
break;
case "scroll":
//A big wraper around and change some CSS of the wrap
WraperObj.width(Args.width);
WraperObj.height((Args.height+2) * Obj.length);
break;
case "toggle":
WraperObj.width(Args.width);
WraperObj.height(Args.height);
Obj.css({"position":"absolute", "left": "-999px"});
Obj.eq(Args.index).css({"left":"0px", "top":"0px"});
Obj.eq(Args.index).css("opacity", 1);
break;
case "table":
WraperObj.width(Args.width*Args.cols);
Obj.css("float", "left");
}
moveTo();
}
var getLength = function(){
//$totalPages = parseInt((Obj.length));
alert('getLength function totalPages = '+$totalPages);
$('.pagetotal').html(' '+$totalPages);
return ($totalPages);
}
// Move object to a position set by Args.Index
var moveTo = function(){
//get the easeLevel from the cache
var ease = 0;
//Check if the next idx is out of the limit or not
if(!Args.easeType){
Args.easeType = (DOMFirstObj, "easeType");
}
if(Args.index > Obj.length -1 ){
if($.data(DOMFirstObj, "loopback")!=0){
Args.index = 0;
ease = -$.data(DOMFirstObj, "ease");
}
else return;
}
if(Args.index < 0 ){
if($.data(DOMFirstObj, "loopback")!=0){
Args.index = Obj.length-1;
ease = $.data(DOMFirstObj, "ease");
} else return;
}
var WraperSelector = "WideDiv" + $.data(DOMFirstObj);
var WraperObj = $("#"+WraperSelector);
//See what type of effect we stimulate
switch($.data(DOMFirstObj, "type")){
case 'slide':
//Get how much ease we set and start the animation
if(ease!=0){
var easeLevel = (parseInt(WraperObj.css("left").replace("px",""))+ease);
WraperObj.animate({left: easeLevel+"px"}, Args.speed, function(){
WraperObj.animate({left:-(Obj.outerWidth(true) * Args.index)+"px"}, Args.speed, Args.easeType, Callback());
});
}else{
WraperObj.animate({left:-(Obj.outerWidth(true) * Args.index)+"px"}, Args.speed, Args.easeType, Callback());
}
break;
case 'scroll':
//Get how much ease we set and start the animation
if(ease!=0){
var easeLevel = (parseInt(WraperObj.css("top").replace("px",""))+ease);
WraperObj.animate({top: easeLevel+"px"}, Args.speed, function(){
WraperObj.animate({top:-(Obj.outerHeight(true) * Args.index)+"px"}, Args.speed, Args.easeType, Callback());
});
}else{
WraperObj.animate({top:-(Obj.outerHeight(true) * Args.index)+"px"}, Args.speed, Args.easeType, Callback());
}
break;
case 'toggle':
//move the new one on top of the old div
Obj.eq(Args.index).css({"left":"0px", "top":"0px"});
switch($.data(DOMFirstObj, "toggle"))
{
case "fade":
Obj.eq(Args.index).css({"opacity":0});
Obj.eq(Args.index).animate({"opacity":1},Args.speed);
if($.data(DOMFirstObj, "index")!=Args.index){
Obj.eq($.data(DOMFirstObj, "index")).animate({"opacity":0},Args.speed, function(){
$(this).css("left",-999);
Callback();
});
}
break;
case "toggle":
if($.data(DOMFirstObj, "index")!=Args.index){
Obj.eq(Args.index).css({"display":"none"});
Obj.eq($.data(DOMFirstObj, "index")).slideUp(Args.speed, function(){
Obj.eq(Args.index).slideDown(Args.speed, function(){Callback();});
$(this).css("left",-999);
});
}
break;
case "show":
if($.data(DOMFirstObj, "index")!=Args.index){
Obj.eq(Args.index).css({"display":"none"});
Obj.eq($.data(DOMFirstObj, "index")).hide(Args.speed, function(){
Obj.eq(Args.index).show(Args.speed,function(){Callback();});
$(this).css("left",-999);
});
}
break;
case "noeffect":
if($.data(DOMFirstObj, "index")!=Args.index){
Obj.eq($.data(DOMFirstObj, "index")).css("left", -999);
Callback();
}
break;
}
break;
case "table":
var cols = $.data(DOMFirstObj, "cols");
//Where the next idx in the table
var nextX = -(Args.index % cols) * Obj.width();
var nextY = -Math.floor(Args.index / cols) * Obj.height();
//Move horizontal first
WraperObj.animate({"left": nextX}, Args.speed, Args.easeType, function(){
WraperObj.animate({"top": nextY}, Args.speed, Args.easeType, Callback());
});
break;
default:
$('html,body').animate({"scrollTop":Obj.eq(Args.index).offset().top},Args.speed);
break;
}
};
//Move by steps
moveStep = function(){
var currentIdx = $.data(DOMFirstObj, "index");
//Calculate the next index
Args.index = parseInt(currentIdx) + parseInt(Args.step);
//Then move to it
moveTo();
}
//Set it run auto
startAuto = function(){
//Save the autoswitch into memory and start it
$.data(DOMFirstObj, "AutoSwitch", setInterval(moveStep, Args.interval));
}
//Stop the auto
stopAuto = function(){
//Stop the interval and clear the cache
clearInterval($.data(DOMFirstObj, "AutoSwitch"));
$.removeData(DOMFirstObj, "AutoSwitch");
}
//Toggle auto
toggleAuto = function(){
if(isAuto()){
stopAuto();
}else{
startAuto();
}
}
//Return if this is auto or not
isAuto = function(){
if($.data(DOMFirstObj, "AutoSwitch")){
return true;
}else{
return false;
}
}
if(!command) command = "";
//Check what user want
switch(command.toLowerCase()){
case "index":
if($.data(DOMFirstObj, "index")){
return $.data(DOMFirstObj, "index");
}else{
return 0;
}
break;
case "moveto":
moveTo();
break;
case "movestep":
moveStep();
break;
case "destroy":
backFromCache();
break;
case "create":
createTab();
break;
case "isauto":
return isAuto();
break;
case "toggleauto":
toggleAuto();
break;
case "startauto":
startAuto();
break;
case "stopauto":
stopAuto();
break;
case "getlength":
getLength();
break;
case "pagecount":
pageCount();
break;
}
};
})(jQuery);
答案 0 :(得分：1)
套管在这里很重要，你可能需要拨打getLength而不是getlength，如下所示：
$totalPages = $('.SlideTab').tabSwitch('getLength');
此外，您提醒并返回不同的变量，您还需要在.html()来电中使用$totalPages：
$('.pagetotal').html(' '+$totalPages);