jQuery.roll 是模拟百度新闻不间断滚动效果，并支持文字、图片水平垂直滚动，该函数使用方法为：
复制代码 代码如下:
jQuery.roll(contentCls, contentParentId, configs);
二、函数源码
复制代码 代码如下:
jQuery.extend({
roll: function(contentCls, contentParentId, configs){
var setTimeID, totalWidth = 0, totalHeight = 0,
firstContent, secondContent, contents;
(function(){
var singleContent, cloneContent, nodeList;
singleContent = $(contentCls, contentParentId);
nodeList = singleContent.children();
if (configs.effect === 'scrollX') {
$.each(nodeList, function(idx, itm) {
totalWidth += $(itm).outerWidth(true);
});
singleContent.css({ 'width': totalWidth + 'px' });
}
else if (configs.effect === 'scrollY') {
$.each(nodeList, function(idx, itm) {
totalHeight += $(itm).outerHeight(true);
});
singleContent.css({ 'height': totalHeight + 'px' });
}
cloneContent = singleContent.clone();
cloneContent.appendTo(contentParentId);
contents = $(contentCls, contentParentId);
firstContent = contents[0];
secondContent = contents[1];
if (configs.effect === 'scrollX') {
$(firstContent).css({ 'left': 0 });
$(secondContent).css({ 'left': totalWidth + 'px' });
}
else if (configs.effect === 'scrollY') {
$(firstContent).css({ 'top': 0 });
$(secondContent).css({ 'top': totalHeight + 'px' });
}
})()
function cssAnimate(){
if (configs.effect === 'scrollX') {
$(firstContent).css({ left: parseInt(firstContent.style.left, 10) - 1 + 'px' });
$(secondContent).css({ left: parseInt(secondContent.style.left, 10) - 1 + 'px' });
$.each(contents, function(idx, itm) {
if (parseInt(itm.style.left,10) === -totalWidth) {
$(itm).css({ left: totalWidth + 'px' });
}
});
}
else if (configs.effect === 'scrollY') {
$(firstContent).css({ top: parseInt(firstContent.style.top, 10) - 1 + 'px' });
$(secondContent).css({ top: parseInt(secondContent.style.top, 10) - 1 + 'px' });
$.each(contents, function(idx, itm) {
if (parseInt(itm.style.top,10) === -totalHeight) {
$(itm).css({ top: totalHeight + 'px' });
}
});
}
setTimeId = setTimeout(cssAnimate, configs.duration);
}
function rollRun(){
setTimeId = setTimeout(cssAnimate, configs.delay);
return jQuery;
}
function rollStop(){
clearTimeout(setTimeId);
return jQuery;
}
return $.extend({
rollRun: rollRun,
rollStop: rollStop
});
}
});
三、完整demo源码
例3.1
复制代码 代码如下:
body { font: 12px/1.5 tahoma,"microsoft yahei","微软雅黑E8F6F96C59ED1"; }
body, div, ul, li, h1 { margin: 0; padding: 0; }
.news { margin: 100px 0 0 100px; }
.news ul { list-style: none; }
.news-box { width: 600px; margin-left: 20px; height: 24px; background-color: #fcfcfd; overflow: hidden; position: relative; _zoom: 1; }
.news h1 { margin-bottom: 15px; padding-left: 20px; color: #370188; }
.news-list { position: absolute; }
.news-list { float: left; }
.news-list li { float: left; _display: inline; margin-right: 15px; height: 24px; line-height: 24px; overflow: hidden; word-wrap: normal; }
.news-list li a { text-decoration: none; color: #000; }
.news-list li a:hover {
-webkit-transition: color .2s linear,background-color .3s linear;
-moz-transition: color .2s linear,background-color .3s linear;
-ms-transition: color .2s linear,background-color .3s linear;
-o-transition: color .2s linear,background-color .3s linear;
transition: color .2s linear,background-color .3s linear;
color: #FF4400;
text-decoration: underline;
}
.news-list li a:visited { color: #290065; }
文字列表滚动
- 日方否认将对中国巡航钓鱼岛飞机
- 日本防卫省否认将对中国飞机警告射击(图)
- 日否认警告射击中海监飞机 恐中日因夺岛开战
例3.2
复制代码 代码如下:
View Code
body { font: 12px/1.5 tahoma, "microsoft yahei", "微软雅黑E8F6F96C59ED1"; }
body, div, ul, li, h1 { margin: 0; padding: 0; }
.news { margin: 100px 0 0 100px; }
.news ul { list-style: none; }
.news-box { padding: 20px; width: 310px; height: 192px; background-color: #fcfcfd; overflow: hidden; position: relative; }
.news h1 { margin-bottom: 15px; padding-left: 20px; color: #370188; }
.news-list { position: absolute; }
.news-list li { width: 100%; height: 24px; line-height: 24px; overflow: hidden; word-wrap: normal; }
.news-list li a { text-decoration: none; color: #000; }
.news-list li a:hover {
-webkit-transition: color .2s linear, background-color .3s linear;
-moz-transition: color .2s linear, background-color .3s linear;
-ms-transition: color .2s linear, background-color .3s linear;
-o-transition: color .2s linear, background-color .3s linear;
transition: color .2s linear, background-color .3s linear;
color: #FF4400;
text-decoration: underline;
}
.news-list li a:visited { color: #290065; }
文字列表滚动
- 在澳中国留学生涉嫌接送非法色情业者赚外快被罚
- 印度北部等今冬遭遇极寒天气 已致数百人被冻死
- 意大利警方禁止挂中国红灯笼 被指危险引燃物
- 日方否认将对中国巡航钓鱼岛飞机
- 日本防卫省否认将对中国飞机警告射击(图)
- 日否认警告射击中海监飞机 恐中日因夺岛开战
- 传解放军举行长白山军演
- 中国高新6号反潜机问世 反潜艇性能优于美军P-3C
- 张建刚：2030年中国将圆海洋强国梦
- 运-20现身试飞中心 可取代伊尔-76任何功能
- 东海舰队引入大批无人机 饱和攻击让日难以招架
