web前端|js教程
图片切换,幻灯
web前端-js教程
非常漂亮的JS+CSS图片幻灯切换特效，用在你的首页比较不错，宽屏图片格式，每张图片平滑飞入切换，鼠标放上自动切换，和FLASH的平滑效果差不多，视觉冲击效果很爽，而且代码也不多，调试调用都方便，建议关注一下哦!
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* { margin:0; padding:0; }
body { background:#FFF; color:#333; font:12px/1.6em Helvetica, Arial, sans-serif; }
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; }
#ibanner { position:relative; width:650px; height:250px; overflow:hidden; margin:20px 0 20px 300px; }
#ibanner_pic {}
#ibanner_pic a { position:absolute; top:0; display:block; width:650px; height:250px; overflow:hidden; }
#ibanner_btn { position:absolute; z-index:9999; right:5px; bottom:5px; font-weight:700; font-family:Arial; }
#ibanner_btn span { display:block; float:left; margin-left:4px; padding:0 5px; background:#000; cursor:pointer; }
#ibanner_btn .normal { height:20px; margin-top:8px; border:1px solid #999; color:#999; font-size:16px; line-height:20px; }
#ibanner_btn .current { height:28px; border:1px solid #FF5300; color:#FF5300; font-size:28px; line-height:28px; }
function $(id) { return document.getElementById(id); }
function addLoadEvent(func){
var oldonload = window.onload;
if (typeof window.onload != function) {
window.onload = func;
} else {
window.onload = function(){
oldonload();
func();
}
}
}
function addBtn() {
if(!$(ibanner)||!$(ibanner_pic)) return;
var picList = $(ibanner_pic).getElementsByTagName(a);
if(picList.length==0) return;
var btnBox = document.createElement(div);
btnBox.setAttribute(id,ibanner_btn);
var SpanBox =\;
for(var i=1; i<=picList.length; i++ ) {
var spanList = \+i+\;
SpanBox += spanList;
}
btnBox.innerHTML = SpanBox;
$(ibanner).appendChild(btnBox);
$(ibanner_btn).getElementsByTagName(span)[0].className = current;
for (var m=0; m<picList.length; m++){
var attributeValue = picLi_+m
picList[m].setAttribute(id,attributeValue);
}
}
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) {
moveing = false;
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() {
var btnList = $(ibanner_btn).getElementsByTagName(span);
for (var i=0; i<btnList.length; i++){
btnList[i].className= ormal;
}
}
function picZ() {
var picList = $(ibanner_pic).getElementsByTagName(a);
for (var i=0; i<picList.length; i++){
picList[i].style.zIndex=1;
}
}
var autoKey = false;
function iBanner() {
if(!$(ibanner)||!$(ibanner_pic)||!$(ibanner_btn)) return;
$(ibanner).onmouseover = function(){autoKey = true};
$(ibanner).onmouseout = function(){autoKey = false};
var btnList = $(ibanner_btn).getElementsByTagName(span);
var picList = $(ibanner_pic).getElementsByTagName(a);
if (picList.length==1) return;
picList[0].style.zIndex=2;
for (var m=0; m<btnList.length; m++){
btnList[m].onmouseover = function() {
for(var n=0; n<btnList.length; n++) {
if (btnList[n].className == current) {
var currentNum = n;
}
}
classNormal();
picZ();
this.className=current;
picList[currentNum].style.zIndex=2;
var z = this.childNodes[0].nodeValue-1;
picList[z].style.zIndex=3;
if (currentNum!=z){
picList[z].style.left=650px;
moveElement(picLi_+z,0,0,10);
}
}
}
}
setInterval(autoBanner(), 5000);
function autoBanner() {
if(!$(ibanner)||!$(ibanner_pic)||!$(ibanner_btn)||autoKey) return;
var btnList = $(ibanner_btn).getElementsByTagName(span);
var picList = $(ibanner_pic).getElementsByTagName(a);
if (picList.length==1) return;
for(var i=0; i<btnList.length; i++) {
if (btnList[i].className == current) {
var currentNum = i;
}
}
if (currentNum==(picList.length-1) ){
classNormal();
picZ();
btnList[0].className=current;
picList[currentNum].style.zIndex=2;
picList[0].style.zIndex=3;
picList[0].style.left=650px;
moveElement(picLi_0,0,0,10);
} else {
classNormal();
picZ();
var nextNum = currentNum+1;
btnList[nextNum].className=current;
picList[currentNum].style.zIndex=2;
picList[nextNum].style.zIndex=3;
picList[nextNum].style.left=650px;
moveElement(picLi_+nextNum,0,0,10);
}
}
addLoadEvent(addBtn);
addLoadEvent(iBanner);
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