本文实例为大家分享了JavaScript轮播图组件代码，供大家参考，具体内容如下//轮播图组件function Rolling(o) {this.index = ++o.index || 1; //当前滚动的位置，当index大于可轮播的次数listLength或者等于0,为不可滚动状态this.num = o.num || 1; //默认滚动一个列表this.obj = o.obj || null; //要轮播的对象ul this.perObj = o.perObj || null; //向上翻页的按钮对象this.nextObj = o.nextObj || null; //向下翻页的按钮对象this.focusPoint = o.focusPoint || null; //焦点对象，默认为null。意思不开启焦点对象，如要开启可传入焦点对象可自动开启this.focusClass = o.focusClass || 'mien-active'; //当前焦点位置类名this.replaceBtn = o.replaceBtn || false;//是否在轮播到第一页或最后一页时替换翻页按钮图片。默认值为true,并替换按钮图片为re+图片名。如：per.png替换成re-per.ping console.log(o.replaceBtn) this.listLength = Math.ceil(o.obj.find('li').length / this.num); //可轮播的次数this.listObj = o.obj.children('li');this.listWidth =this.listObj.width() + parseInt(this.listObj.css('margin-left')) + parseInt(this.listObj.css('margin-right')); //列表宽度this.init(); //初始化};Rolling.prototype.init = function() {
var thisObj = this;this.initLeft();this.replaceFun();if(this.focusPoint !== null) {this.createFocusPoint();}this.perObj.unbind('click').on('click', function() {thisObj.rollPrev();});this.nextObj.unbind('click').on('click', function() {thisObj.rollNext();});}//创建焦点,并给当前位置的焦点添加类mien-active Rolling.prototype.createFocusPoint = function() {var str = '',thisObj = this;for(var i = 0; i < this.listLength; i++) {if(i == this.index - 1) {str += '
';} else {str += '';}}this.focusPoint.append(str);this.focusPoint.children().click(function() {var oldIndex = $('.' + thisObj.focusClass).index() + 1; //之前的焦点位置var index = $(this).index() + 1; //当前点击的焦点var sum = index - oldIndex;var perObject = thisObj.perObj.find('img');var nextObject = thisObj.nextObj.find('img');if (index == 1 && !thisObj.replaceBtn){perObject.attr('src',perObject.attr('data-src'));nextObject.attr('src',nextObject.attr('data-src'));}else if (index == thisObj.listLength && !thisObj.replaceBtn){perObject.attr('src',perObject.attr('re-src'));nextObject.attr('src',nextObject.attr('re-src'));}else if (!thisObj.replaceBtn){perObject.attr('src',perObject.attr('re-src'));nextObject.attr('src',nextObject.attr('data-src'));}thisObj.index += sum;if(sum > 0) {thisObj.obj.animate({marginLeft: '-=' + Math.abs(sum) * thisObj.num * thisObj.listWidth + 'px'});}if(sum < 0) {thisObj.obj.animate({marginLeft: '+=' + Math.abs(sum) * thisObj.num * thisObj.listWidth + 'px'});}$(this).addClass(thisObj.focusClass).siblings().removeClass(thisObj.focusClass);});}Rolling.prototype.initLeft = function() {if(this.index == 1) {return;}this.obj.css('margin-left', -(this.index - 1) * this.listWidth); //初始化全屏图片显示的位置}Rolling.prototype.rollPrev = function() {--this.index;//当点击到第一页就return if (this.index <= 1 && !this.replaceBtn){this.perObj.find('img').attr('src',this.perObj.find('img').attr('data-src'));}if(!this.thisIndex()) {++this.index;return;}if (!this.replaceBtn){this.nextObj.find('img').attr('src',this.nextObj.find('img').attr('data-src'));}this.obj.animate({marginLeft: '+=' + this.num * this.listWidth + 'px'});if(this.focusPoint !== null) {$('.' + this.focusClass).removeClass(this.focusClass).prev().addClass(this.focusClass);}}Rolling.prototype.rollNext = function() {++this.index;if (this.index == this.listLength && !this.replaceBtn){this.nextObj.find('img').attr('src',this.nextObj.find('img').attr('re-src'));}//当点击到最后一页就return if(!this.thisIndex()) {--this.index;return;}if (!this.replaceBtn){this.perObj.find('img').attr('src',this.perObj.find('img').attr('re-src'));}this.obj.animate({marginLeft: '-=' + this.num * this.listWidth + 'px'});if(this.focusPoint !== null) {$('.' + this.focusClass).removeClass(this.focusClass).next().addClass(this.focusClass);}}Rolling.prototype.replaceFun = function(){var perObject = this.perObj.find('img'),nextObject = this.nextObj.find('img');var perSrc = perObject.attr('src'),nextSrc = nextObject.attr('src');perObject.attr({'data-src':perSrc,'re-src':this.splitSrc(perSrc)});nextObject.attr({'data-src':nextSrc,'re-src':this.splitSrc(nextSrc)});}
Rolling.prototype.splitSrc = function(str){var list = str.split('/');var data = list[list.length-1];var sub = data.substr(0,data.indexOf('.'));return str.replace(sub,'re-' + sub);}
Rolling.prototype.thisIndex = function() {if(this.index > this.listLength | this.index <= 0) {return false;}return true;}
function createRolling(o) {return new Rolling(o);}以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持脚本之家。
您可能感兴趣的文章:jQuery自适应轮播图插件Swiper用法示例jQuery插件slides实现无缝轮播图特效jquery制作多功能轮播图插件原生js实现网易轮播图效果javascript经典特效分享 手风琴、轮播图、图片滑动利用AngularJs实现京东首页轮播图效果js 基础篇必看(点击事件轮播图的简单实现)简单的JS轮播图代码js实现支持手机滑动切换的轮播图片效果实例原生JS轮播图插件