这篇文章介绍了如何使用幻灯方式来进行全屏幕页面导航，包括了16个幻灯，4个一行，一共4行。并且通过了CSS3箭头添加了动画导航效果。而且提供一个迷你的导航条能够帮助用户记录访问过的幻灯页面。希望大家喜欢！
Javascript代码
- var navi = {
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// variables
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aPages : [],
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aLinks : [],
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tween : {},
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oParent : null,
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oPages : null,
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bRunning : null,
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sTargPage : null,
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sCurPage : null,
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bHash : null,
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sOldH : null,
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bUpdateH : true,
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// initialization
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init : function (aParams) {
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this.oPages = document.getElementById(aParams.pages_id);
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this.oParent = document.getElementById(aParams.parent_id);
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var aAEls = this.oParent.getElementsByTagName('a');
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var i = 0; var p = null;
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while (p = aAEls[i++]) {
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if (p.className && p.className.indexOf('go') >= 0) {
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var sHref = p.href.split('#')[1];
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var oDst = document.getElementById(sHref);
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if (oDst) {
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// fill-in pages array
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this.aPages[sHref] = {
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oObj: oDst,
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iXPos: -oDst.offsetLeft,
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iYPos: -oDst.offsetTop
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};
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// fill-in links array
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this.aLinks.push({a: p, oObj: oDst});
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p.onclick = function () {
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navi.goto(this.href.split('#')[1], aParams.duration);
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return false;
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}
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}
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}
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}
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this.resize();
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if ('onhashchange' in window) {
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if (location.hash !== '' && location.hash !== '#') {
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this.sOldH = location.hash.substring(1);
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this.goto(this.sOldH, -1);
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} else
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this.goto('page1', -1);
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this.bHash = true;
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window.onhashchange = function() {
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if (location.hash.substring(1) !== navi.sOldH) {
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navi.sOldH = location.hash.substring(1);
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if (navi.sOldH == '') {
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navi.bUpdateH = false;
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}
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navi.goto(navi.sOldH, aParams.duration);
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}
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return false;
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}
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}
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},
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// on resize
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resize : function () {
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var iCurW = this.oParent.offsetWidth; // current sizes
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var iCurH = this.oParent.offsetHeight;
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for (var i in this.aPages) { // for each page
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var oPage = this.aPages[i];
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var iNewX = Math.round(oPage.oObj.offsetLeft * iCurW / oPage.oObj.offsetWidth); // new sizes
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var iNewY = Math.round(oPage.oObj.offsetTop * iCurH / oPage.oObj.offsetHeight);
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oPage.oObj.style.left = iNewX + 'px';
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oPage.oObj.style.top = iNewY + 'px';
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oPage.oObj.style.width = iCurW + 'px';
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oPage.oObj.style.height = iCurH + 'px';
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oPage.iXPos = -iNewX;
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oPage.iYPos = -iNewY;
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if (this.sCurPage)
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this.goto(this.sCurPage, -1);
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}
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},
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goto : function (sHref, iDur) {
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this.tween.iStart = new Date() * 1;
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this.tween.iDur = iDur;
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this.tween.fromX = this.oPages.offsetLeft;
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this.tween.fromY = this.oPages.offsetTop;
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this.tween.iXPos = this.aPages[sHref].iXPos - this.tween.fromX;
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this.tween.iYPos = this.aPages[sHref].iYPos - this.tween.fromY;
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this.sTargPage = sHref;
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if (! this.bRunning)
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this.bRunning = window.setInterval(this.animate, 24);
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},
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animate : function () {
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var iCurTime = (new Date() * 1) - navi.tween.iStart;
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if (iCurTime < navi.tween.iDur) {
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var iCur = Math.cos(Math.PI * (iCurTime / navi.tween.iDur)) - 1;
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navi.oPages.style.left = Math.round(-navi.tween.iXPos * .5 * iCur + navi.tween.fromX) + 'px';
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navi.oPages.style.top = Math.round(-navi.tween.iYPos * .5 * iCur + navi.tween.fromY) + 'px';
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} else {
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navi.oPages.style.left = Math.round(navi.tween.fromX + navi.tween.iXPos) + 'px';
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navi.oPages.style.top = Math.round(navi.tween.fromY + navi.tween.iYPos) + 'px';
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window.clearInterval(navi.bRunning);
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navi.bRunning = false;
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navi.sCurPage = navi.sTargPage;
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var i = 0; var p = null;
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while (p = navi.aLinks[i++]) {
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if (p.oObj.id == navi.sCurPage) {
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if (p.a.className.indexOf('visited') >= 0 ) {
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p.a.className = p.a.className.replace('visited', 'active');
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} else p.a.className += ' active';
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p.visited = true;
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} else if (p.visited) {
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p.a.className = p.a.className.replace('active', 'visited');
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}
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}
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if (navi.bHash) {
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if (navi.bUpdateH) {
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navi.sOldH = navi.sCurPage;
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window.location.hash = navi.sCurPage;
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}
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navi.bUpdateH = true;
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}
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}
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}
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}
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window.onload = function() { // page onload
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navi.init({parent_id: 'container', pages_id: 'pages', duration: 1000});
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}
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window.onkeydown = function(event){ // keyboard alerts
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switch (event.keyCode) {
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case 37: // Left key
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var iPage = navi.sCurPage.substring(4) * 1;
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iPage--;
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if (iPage < 1) {
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iPage = 1;
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}
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navi.goto('page' + iPage, 1000);
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break;
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case 39: // Right key
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var iPage = navi.sCurPage.substring(4) * 1;
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iPage++;
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if (iPage > 16) {
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iPage = 16;
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}
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navi.goto('page' + iPage, 1000);
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break;
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}
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};
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