scroll pagination.js数据重复加载、分页问题
scroll pagination.js数据重复加载、分页问题 解决办法
参考资料：
http://blog.csdn.net/dyw442500150/article/details/17532425
http://bbs.csdn.net/topics/390624732?locationNum=8
解决数据重复加载，加锁机制，修改源JS文件为：
/*
** Anderson Ferminiano
** contato@andersonferminiano.com -- feel free to contact me for bugs or new implementations.
** jQuery ScrollPagination
** 28th/March/2011
** http://andersonferminiano.com/jqueryscrollpagination/
** You may use this script for free, but keep my credits.
** Thank you.
*/ (function ($) { $.fn.scrollPagination = function (options) { var opts = $.extend($.fn.scrollPagination.defaults, options);
var target = opts.scrollTarget;
if (target == null) {
target = obj;
}
opts.scrollTarget = target; return this.each(function () {
$.fn.scrollPagination.init($(this), opts);
}); }; $.fn.stopScrollPagination = function () {
return this.each(function () {
$(this).attr('scrollPagination', 'disabled');
}); }; $.fn.scrollPagination.loadContent = function (obj, opts) {
var target = opts.scrollTarget;
var mayLoadContent = $(target).scrollTop() + opts.heightOffset >= $(document).height() - $(target).height();
//根据mayLoadContent 和 lock两个参数进行判断
if (mayLoadContent && opts.lock) {
if (opts.beforeLoad != null) {
opts.beforeLoad();
}
//加载数据的时候把lock设为false
opts.lock = false;
$(obj).children().attr('rel', 'loaded');
$.ajax({
type: 'POST',
url: opts.contentPage,
data: opts.contentData,
success: function (data) {
//加载成功后把lock设为true，可以进行下一次request
opts.lock = true;
$(obj).append(data);
var objectsRendered = $(obj).children('[rel!=loaded]'); if (opts.afterLoad != null) {
opts.afterLoad(objectsRendered);
}
},
dataType: 'html'
});
} }; $.fn.scrollPagination.init = function (obj, opts) {
var target = opts.scrollTarget;
$(obj).attr('scrollPagination', 'enabled'); $(target).scroll(function (event) {
if ($(obj).attr('scrollPagination') == 'enabled') {
$.fn.scrollPagination.loadContent(obj, opts);
}
else {
event.stopPropagation();
}
}); $.fn.scrollPagination.loadContent(obj, opts); }; $.fn.scrollPagination.defaults = {
'contentPage': null,
'contentData': {},
'beforeLoad': null,
'afterLoad': null,
'scrollTarget': null,
'heightOffset': 0,
//添加lock机制，如果数据加载完了，则lock为true，可以加载下一组数据，如果数据没有加载完，则lock为false，等到数据加载完成了为true。
'lock': true
};
})(jQuery);
分页问题，主要在页数传递：
在afterLoad()函数中更新post参数的值：
this.contentData.pageindex = c;
<!DOCTYPE HTML PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>jQuery ScrollPagination</title> <script src="~/jspm/scripts/jquery.js"></script>
<script src="~/jspm/scripts/scrollpagination.js"></script>
<link href="~/jspm/scrollpagination_demo.css" rel="stylesheet" /> <meta name="author" content="Anderson Ferminiano" />
<meta name="keywords" content="jquery, plugin, anderson ferminiano, scroll, pagination, scroll pagination, html5" />
<script type="text/javascript">
$(function () {
var c = 1;
$('#content').scrollPagination({
'contentPage': '/home/getjson', // the url you are fetching the results
'contentData': { pageindex: c }, // these are the variables you can pass to the request, for example: children().size() to know which page you are
'scrollTarget': $(window), // who gonna scroll? in this example, the full window
'heightOffset': 10, // it gonna request when scroll is 10 pixels before the page ends
'beforeLoad': function () { // before load function, you can display a preloader div
$('#loading').fadeIn();
},
'afterLoad': function (elementsLoaded) { // after loading content, you can use this function to animate your new elements
$('#loading').fadeOut();
c++;
this.contentData.pageindex = c;
$(elementsLoaded).fadeInWithDelay();
if ($('#content').children().size() > 35 ) { // if more than 100 results already loaded, then stop pagination (only for testing)
$('#nomoreresults').fadeIn();
$('#content').stopScrollPagination();
}
} }); // code for fade in element by element
$.fn.fadeInWithDelay = function () {
var delay = 0;
return this.each(function () {
$(this).delay(delay).animate({ opacity: 1 }, 200);
delay += 100;
});
}; });
</script>
</head>
<body>
<div id="scrollpaginationdemo">
<div class="about">
<h1>jQuery ScrollPagination - <a href="http://www.twitter.com/andferminiano" target="_blank">andferminiano</a></h1>
<p>Official post in my <a href="http://www.andersonferminiano.com/blog/2012/07/jquery-scroll-pagination/" target="_blank">blog</a></p>
<p>jQuery ScrollPagination plugin has been developed by <a href="http://www.andersonferminiano.com" target="_blank">Anderson Ferminiano</a> for studying purposes, you may use it for free in any project you want, please maintain the credits.</p>
</div>
<div class="about">
<h1>Sources</h1>
<p><a href="https://github.com/andferminiano/jquery-scroll-pagination" target="_blank">Github me!</a></p>
<p>Click <a href="jqueryscrollpagination.zip" target="_blank">here</a> to download the full source with demo (.zip format).</p>
</div>
<div class="about">
<h1>Example</h1>
<textarea readonly="readonly">
$(function(){
$('#content').scrollPagination({
'contentPage': 'democontent.html', // the url you are fetching the results
'contentData': {}, // these are the variables you can pass to the request, for example: children().size() to know which page you are
'scrollTarget': $(window), // who gonna scroll? in this example, the full window
'heightOffset': 10, // it gonna request when scroll is 10 pixels before the page ends
'beforeLoad': function(){ // before load function, you can display a preloader div
$('#loading').fadeIn();
},
'afterLoad': function(elementsLoaded){ // after loading content, you can use this function to animate your new elements
$('#loading').fadeOut();
var i = 0;
$(elementsLoaded).fadeInWithDelay();
if ($('#content').children().size() > 100){ // if more than 100 results already loaded, then stop pagination (only for testing)
$('#nomoreresults').fadeIn();
$('#content').stopScrollPagination();
}
}
}); // code for fade in element by element
$.fn.fadeInWithDelay = function(){
var delay = 0;
return this.each(function(){
$(this).delay(delay).animate({opacity:1}, 200);
delay += 100;
});
}; });
</textarea>
</div>
<ul id="content" nextpage='1'>
<li><p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nunc elementum elementum felis. Quisque porta turpis nec eros consectetur lacinia. Pellentesque sagittis adipiscing egestas. </p></li>
<li><p>Aliquam dapibus tincidunt odio. Phasellus volutpat dui nec ante volutpat euismod. </p></li>
<li><p>Phasellus vehicula turpis nec dui facilisis eget condimentum risus ullamcorper. Nunc imperdiet, tortor ultrices aliquam eleifend, nisl turpis venenatis dui, at vestibulum magna tellus in tortor. </p></li>
<li><p>Vestibulum ante ipsum primis in faucibus orci luctus et ultrices posuere cubilia Curae; Mauris tincidunt nisi in tortor tincidunt ut ullamcorper lectus dapibus. </p></li>
<li><p>Aenean interdum dui vitae purus molestie nec placerat nibh semper. Maecenas ultrices elementum dapibus. Aenean feugiat, metus in mattis mattis, justo nisi dignissim libero, ac volutpat dui nibh quis metus.</p></li>
<li><p> Morbi eget tristique dui. Vivamus nec turpis eu nisi euismod accumsan sed in tortor. Maecenas laoreet leo ut tortor viverra facilisis.</p></li>
</ul>
<div class="loading" id="loading">Wait a moment... it's loading!</div>
<div class="loading" id="nomoreresults">Sorry, no more results for your pagination demo.</div>
</div>
</body>
</html>
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