时间:2021-07-01 10:21:17 帮助过:17人阅读
前端新手自己写的,练习一下基本功,也是留下的第一次记录
html部分
- div class="cm-banner">
- <div class="cm-banner-list">
- <ul id="cm_banner_list">
- <!--图片宽度和高度在css中定为1920x300-->
- <li><img src="cm-banner-01.png" /></li>
- <li><img src="cm-banner-02.png" /></li>
- <li><img src="cm-banner-03.png" /></li>
- <li><img src="cm-banner-04.png" /></li>
- </ul>
- <ul class="cm-banner-num" id="cm_banner_num"></ul>
- </div>
- <div class="cm-banner-in w">
- <img src="cm-arrow-left.png" id="cm_prev" class="cm-banner-arrow" />
- <img src="cm-arrow-right.png" id="cm_next" class="cm-banner-arrow" />
- </div>
- </div>
css部分
- *{
- margin: 0;
- padding: 0;
- }
- .cm-banner {
- width: 100%;
- height: 300px;
- overflow: hidden;
- cursor: pointer;
- position: relative;
- }
- .cm-banner-in {
- width: 1100px;
- height: 300px;
- position: absolute;
- top: 0;
- left: 50%;
- margin-left: -550px;
- }
- #cm_banner_list li{
- display: none;
- position: absolute;
- top: 0;
- left: 0;
- }
- .cm-banner-num {
- width: 100%;
- position: absolute;
- bottom: 0;
- text-align: center;
- z-index: 2; /*如果没有在这里设置层次小圆点的点击效果无法触发*/
- }
- .cm-banner-num li{
- width: 10px;
- margin: 10px 3px;
- height: 10px;
- background-color: #fff;
- border-radius: 5px;
- -webkit-border-radius: 5px;
- display: inline-block;
- opacity: 0.7;
- }
- .cm-banner-num .active {
- background-color: #3982de;
- }
- .cm-banner-arrow {
- position: absolute;
- top: 50%;
- margin-top: -22px;
- opacity: 0.5;
- display: none;
- }
- #cm_prev {
- left: 0;
- }
- #cm_next {
- right: 0;
- }
js部分
- $(function(){
- //鼠标移入显示箭头按钮
- $('.cm-banner').hover(function(){
- $('.cm-banner-arrow').show();
- clearInterval(cm_timer);
- },function(){
- $('.cm-banner-arrow').hide();
- cm_timer = setInterval(function(){
- i++;
- if(i > cm_length - 1){
- i = 0;
- }
- $('#cm_banner_list li').eq(i).fadeIn(800).siblings().fadeOut(800);
- cm_toggle(i);
- },2500);
- });
- //鼠标移入箭头按钮高亮
- $('.cm-banner-arrow').hover(function(){
- $(this).css('opacity','1');
- },function(){
- $(this).css('opacity','0.5');
- });
- //初始化必要变量
- var i = 0;
- var cm_length = $('#cm_banner_list li').length;
- var cm_toggle = function(point){
- $('#cm_banner_num li').eq(point).addClass('active').siblings().removeClass('active');
- };
- //动态添加小圆点
- for(j = 0;j < cm_length;j++){
- $('#cm_banner_num').append('<li></li>');
- }
- //给第一个小圆点添加样式
- $('#cm_banner_num li').first().addClass('active');
- //给第一张图片添加样式
- $('#cm_banner_list li').first().css('display','block');
- //鼠标点击左箭头切换
- $('#cm_prev').click(function(){
- i--;
- if(i < 0){
- i = cm_length - 1;
- }
- $('#cm_banner_list li').eq(i).fadeIn(800).siblings().fadeOut(800);
- cm_toggle(i);
- });
- //鼠标点击右箭头切换
- $('#cm_next').click(function(){
- i++;
- if(i > cm_length - 1){
- i = 0;
- }
- $('#cm_banner_list li').eq(i).fadeIn(800).siblings().fadeOut(800);
- cm_toggle(i);
- });
- //鼠标点击圆点切换
- $('#cm_banner_num li').click(function(){
- var cm_index = $(this).index();
- $('#cm_banner_list li').eq(cm_index).fadeIn(800).siblings().fadeOut(800);
- i = cm_index;
- cm_toggle(cm_index);
- });
- //自动播放
- cm_timer = setInterval(function(){
- i++;
- if(i > cm_length - 1){
- i = 0;
- }
- $('#cm_banner_list li').eq(i).fadeIn(800).siblings().fadeOut(800);
- cm_toggle(i);
- },2500);
- });
以上这篇jQuery制作全屏宽度固定高度轮播图(实例讲解)就是小编分享给大家的全部内容了,希望能给大家一个参考,也希望大家多多支持脚本之家。