js圖片幻燈片模式切換代碼（圖片切換代碼html5）

本文目錄一覽：

• 1、Jquery幻燈片特效代碼分享–打開頁面隨機選擇切換方式（3）
• 2、js幻燈片左右切換是怎麼做出來的
• 3、如何設置用JS實現的幻燈片自動切換效果的寬高？
• 4、JavaScript 的網頁圖片切換代碼

Jquery幻燈片特效代碼分享–打開頁面隨機選擇切換方式（3）

這篇文章主要介紹了jQuery實現幻燈片焦點圖，可實現非常炫目時尚的幻燈片效果，非常具有實用價值，基本能滿足你在網頁上使用幻燈片(焦點圖)效果，需要的朋友可以參考下

幻燈片效果描述：與前兩節不同的是，這款特效可以打開頁面隨機選擇切換方式（方向）

運行效果截圖如下：

具體代碼如下

head

meta

http-equiv=”Content-Type”

content=”text/html;

charset=gb2312″

/

titleJquery幻燈片焦點圖插件/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”

//打開頁面隨機選擇

切換方式（方向）,怕增大KinSlideshow.js文件

就沒把隨機切換寫到裡面。

//使用時如有需要隨機自己寫在前面是一樣的。而且還可以只固定隨機切換哪幾種。

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打開頁面隨機選擇切換方式（方向）—刷新看看

^_^/h2

div

id=”KinSlideshow1″

style=”visibility:hidden;”

a

target=”_blank”img

src=”images/11.png”

alt=”Jquery幻燈片焦點圖插件”

width=”600″

height=”300″

//a

a

target=”_blank”img

src=”images/23.png”

alt=”Jquery幻燈片焦點圖插件”

width=”600″

height=”300″

//a

a

target=”_blank”img

src=”images/4.jpg”

alt=”Jquery幻燈片焦點圖插件”

width=”600″

height=”300″

//a

a

target=”_blank”img

src=”images/5.jpg”

alt=”Jquery幻燈片焦點圖插件”

width=”600″

height=”300″

//a

a

target=”_blank”img

src=”images/22.png”

alt=”Jquery幻燈片焦點圖插件”

width=”600″

height=”300″

//a

/div

/body

/html

希望本文所述對大家的Jquery特效設計有所幫助。

js幻燈片左右切換是怎麼做出來的

圖片切換一般是用jquery做的，幾句代碼就可以了。主要是鼠標移過事件，鼠標點擊事件，鼠標移開事件

如何設置用JS實現的幻燈片自動切換效果的寬高？

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; 試試看呀。

它的寬度和高度應該是這樣改的。

JavaScript 的網頁圖片切換代碼

!DOCTYPE html PUBLIC “-//W3C//DTD XHTML 1.0 Transitional//EN” “”

html xmlns=””

head

meta http-equiv=”Content-Type” content=”text/html; charset=gb2312″

title網頁特效 首頁圖片切換/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=”武林三國” 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=”商業大亨” border=”0″ //a/li

lia href=”#” target=”_blank”img src=”/edu/img/js/200909/4.jpg” alt=”帝國遠征” border=”0″ //a/li

/ul

/div

div id=”ifocus_opdiv”/div

div id=”ifocus_tx”

ul

li class=”current”2008年度排名第一的網頁遊戲/li

li class=”normal”2009年最新的網頁遊戲 /li

li class=”normal”商業大亨，挑戰億萬富翁/li

li class=”normal”一款2009年不得不玩的帝國遠征/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

自己改圖片鏈接和大小~~