本文目录一览：
- 1、Jquery幻灯片特效代码分享--打开页面随机选择切换方式（3）
- 2、js幻灯片左右切换是怎么做出来的
- 3、如何设置用JS实现的幻灯片自动切换效果的宽高？
- 4、JavaScript 的网页图片切换代码
Jquery幻灯片特效代码分享--打开页面随机选择切换方式（3）
这篇文章主要介绍了jQuery实现幻灯片焦点图，可实现非常炫目时尚的幻灯片效果，非常具有实用价值，基本能满足你在网页上使用幻灯片(焦点图)效果，需要的朋友可以参考下
幻灯片效果描述：与前两节不同的是，这款特效可以打开页面随机选择切换方式（方向）
运行效果截图如下：
具体代码如下
head
meta
http-equiv="Content-Type"
content="text/html;
charset=gb2312"
/
titleJquery幻灯片焦点图插件/title
script
src="js/jquery-1.4a2.min.js"
type="text/javascript"/script
script
src="js/jquery.-1.2.1.min.js"
type="text/javascript"/script
script
type="text/javascript"
//打开页面随机选择
切换方式（方向）,怕增大KinSlideshow.js文件
就没把随机切换写到里面。
//使用时如有需要随机自己写在前面是一样的。而且还可以只固定随机切换哪几种。
var
moveStyle
var
rand
=parseInt(Math.random()*4)
switch(rand){
case
0:
moveStyle="left"
;break;
case
1:
moveStyle="right"
;break;
case
2:
moveStyle="down"
;break;
case
3:
moveStyle="up"
;break;
}
$(function(){
$("#KinSlideshow1").KinSlideshow({moveStyle:moveStyle});
})
/script
style
type="text/css"
#KinSlideshow{
overflow:hidden;
width:600px;
height:300px;}
/style
/head
body
h2打开页面随机选择切换方式（方向）---刷新看看
^_^/h2
div
id="KinSlideshow1"
style="visibility:hidden;"
a
target="_blank"img
src="images/11.png"
alt="Jquery幻灯片焦点图插件"
width="600"
height="300"
//a
a
target="_blank"img
src="images/23.png"
alt="Jquery幻灯片焦点图插件"
width="600"
height="300"
//a
a
target="_blank"img
src="images/4.jpg"
alt="Jquery幻灯片焦点图插件"
width="600"
height="300"
//a
a
target="_blank"img
src="images/5.jpg"
alt="Jquery幻灯片焦点图插件"
width="600"
height="300"
//a
a
target="_blank"img
src="images/22.png"
alt="Jquery幻灯片焦点图插件"
width="600"
height="300"
//a
/div
/body
/html
希望本文所述对大家的Jquery特效设计有所帮助。
js幻灯片左右切换是怎么做出来的
图片切换一般是用jquery做的，几句代码就可以了。主要是鼠标移过事件，鼠标点击事件，鼠标移开事件
如何设置用JS实现的幻灯片自动切换效果的宽高？
你把：
#con_tophome_1{ width:100%; height:450px; background-image:url(img/shou1.jpg); background-repeat:no-repeat; background-position:center top; cursor:pointer}
#con_tophome_2{ width:100%; height:450px; background-image:url(img/shou2.jpg); background-repeat:no-repeat; background-position:center top; cursor:pointer}
#con_tophome_3{ width:100%; height:450px; background-image:url(img/shou3.jpg); background-repeat:no-repeat; background-position:center top; cursor:pointer}
中的width:100%; height:450px;都改成width:500; height:200px; 试试看呀。
它的宽度和高度应该是这样改的。
JavaScript 的网页图片切换代码
!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" ""
html xmlns=""
head
meta http-equiv="Content-Type" content="text/html; charset=gb2312"
title网页特效 首页图片切换/title
style type="text/css"
/* Reset style */
* { margin:0; padding:0; word-break:break-all; }
body {
background:#fff;
color:#000000;
font:12px/1.6em Helvetica, Arial, sans-serif;
margin-left: 0px;
margin-top: 0px;
margin-right: 0px;
margin-bottom: 0px;
}
h1, h2, h3, h4, h5, h6 { font-size:1em; }
a { color:#0287CA; text-decoration:none; }
a:hover { text-decoration:underline; }
ul, li { list-style:none; }
fieldset, img { border:none; }
legend { display:none; }
em, strong, cite, th { font-style:normal; font-weight:normal; }
input, textarea, select, button { font:12px Helvetica, Arial, sans-serif; }
table { border-collapse:collapse; }
html { overflow:-moz-scrollbars-vertical; } /*Always show Firefox scrollbar*/
/* iFocus style */
#ifocus { width:650px; height:245px; margin:0px; border:1px solid #DEDEDE; background:#F8F8F8; }
#ifocus_pic { display:inline; position:relative; float:left; width:540px; height:225px; overflow:hidden; margin:10px 0 0 10px; }
#ifocus_piclist { position:absolute; }
#ifocus_piclist li { width:550px; height:225px; overflow:hidden; }
#ifocus_piclist img { width:550px; height:225px; }
#ifocus_btn { display:inline; float:right; width:91px; margin:9px 9px 0 0; }
#ifocus_btn li { width:91px; height:57px; cursor:pointer; opacity:0.5; -moz-opacity:0.5; filter:alpha(opacity=50); }
#ifocus_btn img { width:75px; height:45px; margin:7px 0 0 11px; }
#ifocus_btn .current { background: url(img/ifocus_btn_bg.gif) no-repeat; opacity:1; -moz-opacity:1; filter:alpha(opacity=100); }
#ifocus_opdiv { position:absolute; left:0; bottom:0; width:545px; height:35px; background:#000; opacity:0.5; -moz-opacity:0.5; filter:alpha(opacity=50); }
#ifocus_tx { position:absolute; left:8px; bottom:8px; color:#FFF; }
#ifocus_tx .normal { display:none; }
/style
script type="text/javascript"
function $(id) { return document.getElementById(id); }
function addLoadEvent(func){
var oldonload = window.onload;
if (typeof window.onload != 'function') {
window.onload = func;
} else {
window.onload = function(){
oldonload();
func();
}
}
}
function moveElement(elementID,final_x,final_y,interval) {
if (!document.getElementById) return false;
if (!document.getElementById(elementID)) return false;
var elem = document.getElementById(elementID);
if (elem.movement) {
clearTimeout(elem.movement);
}
if (!elem.style.left) {
elem.style.left = "0px";
}
if (!elem.style.top) {
elem.style.top = "0px";
}
var xpos = parseInt(elem.style.left);
var ypos = parseInt(elem.style.top);
if (xpos == final_x ypos == final_y) {
return true;
}
if (xpos final_x) {
var dist = Math.ceil((final_x - xpos)/10);
xpos = xpos + dist;
}
if (xpos final_x) {
var dist = Math.ceil((xpos - final_x)/10);
xpos = xpos - dist;
}
if (ypos final_y) {
var dist = Math.ceil((final_y - ypos)/10);
ypos = ypos + dist;
}
if (ypos final_y) {
var dist = Math.ceil((ypos - final_y)/10);
ypos = ypos - dist;
}
elem.style.left = xpos + "px";
elem.style.top = ypos + "px";
var repeat = "moveElement('"+elementID+"',"+final_x+","+final_y+","+interval+")";
elem.movement = setTimeout(repeat,interval);
}
function classNormal(iFocusBtnID,iFocusTxID){
var iFocusBtns= $(iFocusBtnID).getElementsByTagName('li');
var iFocusTxs = $(iFocusTxID).getElementsByTagName('li');
for(var i=0; iiFocusBtns.length; i++) {
iFocusBtns[i].className='normal';
iFocusTxs[i].className='normal';
}
}
function classCurrent(iFocusBtnID,iFocusTxID,n){
var iFocusBtns= $(iFocusBtnID).getElementsByTagName('li');
var iFocusTxs = $(iFocusTxID).getElementsByTagName('li');
iFocusBtns[n].className='current';
iFocusTxs[n].className='current';
}
function iFocusChange() {
if(!$('ifocus')) return false;
$('ifocus').onmouseover = function(){atuokey = true};
$('ifocus').onmouseout = function(){atuokey = false};
var iFocusBtns = $('ifocus_btn').getElementsByTagName('li');
var listLength = iFocusBtns.length;
iFocusBtns[0].onmouseover = function() {
moveElement('ifocus_piclist',0,0,5);
classNormal('ifocus_btn','ifocus_tx');
classCurrent('ifocus_btn','ifocus_tx',0);
}
if (listLength=2) {
iFocusBtns[1].onmouseover = function() {
moveElement('ifocus_piclist',0,-225,5);
classNormal('ifocus_btn','ifocus_tx');
classCurrent('ifocus_btn','ifocus_tx',1);
}
}
if (listLength=3) {
iFocusBtns[2].onmouseover = function() {
moveElement('ifocus_piclist',0,-450,5);
classNormal('ifocus_btn','ifocus_tx');
classCurrent('ifocus_btn','ifocus_tx',2);
}
}
if (listLength=4) {
iFocusBtns[3].onmouseover = function() {
moveElement('ifocus_piclist',0,-675,5);
classNormal('ifocus_btn','ifocus_tx');
classCurrent('ifocus_btn','ifocus_tx',3);
}
}
}
setInterval('autoiFocus()',3500);
var atuokey = false;
function autoiFocus() {
if(!$('ifocus')) return false;
if(atuokey) return false;
var focusBtnList = $('ifocus_btn').getElementsByTagName('li');
var listLength = focusBtnList.length;
for(var i=0; ilistLength; i++) {
if (focusBtnList[i].className == 'current') var currentNum = i;
}
if (currentNum==0listLength!=1 ){
moveElement('ifocus_piclist',0,-225,5);
classNormal('ifocus_btn','ifocus_tx');
classCurrent('ifocus_btn','ifocus_tx',1);
}
if (currentNum==1listLength!=2 ){
moveElement('ifocus_piclist',0,-450,5);
classNormal('ifocus_btn','ifocus_tx');
classCurrent('ifocus_btn','ifocus_tx',2);
}
if (currentNum==2listLength!=3 ){
moveElement('ifocus_piclist',0,-675,5);
classNormal('ifocus_btn','ifocus_tx');
classCurrent('ifocus_btn','ifocus_tx',3);
}
if (currentNum==3 ){
moveElement('ifocus_piclist',0,0,5);
classNormal('ifocus_btn','ifocus_tx');
classCurrent('ifocus_btn','ifocus_tx',0);
}
if (currentNum==1listLength==2 ){
moveElement('ifocus_piclist',0,0,5);
classNormal('ifocus_btn','ifocus_tx');
classCurrent('ifocus_btn','ifocus_tx',0);
}
if (currentNum==2listLength==3 ){
moveElement('ifocus_piclist',0,0,5);
classNormal('ifocus_btn','ifocus_tx');
classCurrent('ifocus_btn','ifocus_tx',0);
}
}
addLoadEvent(iFocusChange);
/script
/head
body
br /
div align="center"
div id="ifocus"
div id="ifocus_pic"
div id="ifocus_piclist" style="left:0; top:0;"
ul
lia href="#" target="_blank"img src="/edu/img/js/200909/1.jpg" alt="武林三国" border="0" //a/li
lia href="#" target="_blank"img src="/edu/img/js/200909/2.jpg" alt="武林英雄" border="0" //a/li
lia href="#" target="_blank"img src="/edu/img/js/200909/3.jpg" alt="商业大亨" border="0" //a/li
lia href="#" target="_blank"img src="/edu/img/js/200909/4.jpg" alt="帝国远征" border="0" //a/li
/ul
/div
div id="ifocus_opdiv"/div
div id="ifocus_tx"
ul
li class="current"2008年度排名第一的网页游戏/li
li class="normal"2009年最新的网页游戏 /li
li class="normal"商业大亨，挑战亿万富翁/li
li class="normal"一款2009年不得不玩的帝国远征/li
/ul
/div
/div
div id="ifocus_btn"
ul
li class="current"img src="/edu/img/js/200909/s1.jpg" alt="" //li
li class="normal"img src="/edu/img/js/200909/s2.jpg" alt="" //li
li class="normal"img src="/edu/img/js/200909/s3.jpg" alt="" //li
li class="normal"img src="/edu/img/js/200909/s4.jpg" alt="" //li
/ul
/div
/div
/div
/body
/html
自己改图片链接和大小~~
