JavaScript banner轮播 左右切换 圆点点击切换
程序员文章站
2023-01-01 14:31:09
1、效果如下图: 2、源码如下: 完毕! good job! good luck! ......
1、效果如下图:
2、源码如下:
<!doctype html> <html lang="en"> <head> <meta charset="utf-8"> <title>javascript banner轮播 左右切换 圆点点击切换</title> <style type="text/css"> div,ul,li,a,span,img{margin:0;padding:0;} #banner { overflow:hidden; width:100%; height:400px; position:relative; float:left; padding-bottom: 10px; } #tab>img:not(:first-child){ display:none; } .lunbo_btn { height: 15px; width: 100%; margin: 0px auto; margin-top: -40px; position: absolute; z-index: 3; text-align: center; } .lunbo_btn span { width:14px; height:14px; display:inline-block; background-color:#b4b5b7; border-radius:50%; margin:0px 2px; cursor:pointer; } .lunbo_btn span.hover { background-color:#ffb23c; } .arrow { display: none; width: 30px; height: 60px; background-color: rgba(0,0,0,0.4); position: absolute; top: 50%; margin-top: -30px; z-index:999; } .arrow span { display: block; width: 10px; height: 10px; border-bottom: 2px solid #fff; border-left: 2px solid #fff; } .slider_left { margin: 25px 0 0 10px; transform: rotate(45deg); } .prve { left: 0; } .next { right: 0; } .slider_right { margin: 25px 0 0 5px; transform: rotate(-135deg); } .arrow:hover{background:#444;} #banner:hover .arrow{display:block;} </style> </head> <body> <div id="banner"> <!-- 轮播图片 --> <div id="tab"> <img class="tabimg" src="images/banner1.jpg" height="400"/> <img class="tabimg" src="images/banner2.jpg" height="400"/> <img class="tabimg" src="images/banner3.jpg" height="400"/> <img class="tabimg" src="images/banner4.jpg" height="400"/> </div> <!-- 指示符 --> <div class="lunbo_btn"> <span num="0" class="tabbtn hover"></span> <span num="1" class="tabbtn"></span> <span num="2" class="tabbtn"></span> <span num="3" class="tabbtn"></span> </div> <!-- 左右切换按钮 --> <div class="arrow prve"> <span class="slider_left"></span> </div> <div class="arrow next"> <span class="slider_right"></span> </div> </div> <script type="text/javascript"> //轮播图 var curindex=0;//初始化 var img_number = document.getelementsbyclassname('tabimg').length; var _timer = setinterval(runfn,2000);//2秒 function runfn(){ //运行定时器 curindex = ++curindex == img_number ? 0 : curindex;//算法 4为banner图片数量 slideto(curindex); } //圆点点击切换轮播图 window.onload = function () { //为按钮初始化onclick事件 var tbs = document.getelementsbyclassname("tabbtn"); for(var i=0;i<tbs.length;i++){ tbs[i].onclick = function () { clearinterval(_timer);//细节处理,关闭定时,防止点切图和定时器函数冲突 slideto(this.attributes['num'].value); curindex = this.attributes['num'].value _timer = setinterval(runfn,2000);//点击事件处理完成,继续开启定时轮播 } } } var prve = document.getelementsbyclassname("prve"); prve[0].onclick = function () {//上一张 clearinterval(_timer);//细节处理,关闭定时,防止点切图和定时器函数冲突 curindex--; if(curindex == -1){ curindex = img_number-1; } slideto(curindex); _timer = setinterval(runfn,2000);//点击事件处理完成,继续开启定时轮播 } var next = document.getelementsbyclassname("next"); next[0].onclick = function () {//下一张 clearinterval(_timer);//细节处理,关闭定时,防止点切图和定时器函数冲突 curindex++; if(curindex == img_number){ curindex =0; } slideto(curindex); _timer = setinterval(runfn,2000);//点击事件处理完成,继续开启定时轮播 } //切换banner图片 和 按钮样式 function slideto(index){ console.log(index) var index = parseint(index);//转int类型 var images = document.getelementsbyclassname('tabimg'); for(var i=0;i<images.length;i++){//遍历每个图片 if( i == index ){ images[i].style.display = 'inline';//显示 }else{ images[i].style.display = 'none';//隐藏 } } var tabbtn = document.getelementsbyclassname('tabbtn'); for(var j=0;j<tabbtn.length;j++){//遍历每个按钮 if( j == index ){ tabbtn[j].classlist.add("hover"); //添加轮播按钮hover样式 curindex=j; }else{ tabbtn[j].classlist.remove("hover");//去除轮播按钮hover样式 } } } </script> </body> </html>
完毕!
good job! good luck!
推荐阅读
-
JavaScript banner轮播 左右切换 圆点点击切换
-
vue.js+elementUI实现点击左右箭头切换头像功能(类似轮播图效果)
-
图片轮播带小圆点选择左右切换
-
将两个div左右并列显示并实现点击标题切换内容_javascript技巧
-
将两个div左右并列显示并实现点击标题切换内容_javascript技巧
-
JavaScript banner轮播 左右切换 圆点点击切换
-
js鼠标点击按钮切换图片-图片自动切换-点击左右按钮切换特效代码_javascript技巧
-
js鼠标点击按钮切换图片-图片自动切换-点击左右按钮切换特效代码_javascript技巧
-
vue.js+elementUI实现点击左右箭头切换头像功能(类似轮播图效果)
-
js支持键盘控制的左右切换立体式图片轮播效果代码分享_javascript技巧