本文實例為大家分享了js Tab選項卡切換效果，供大家參考，具體內容如下
<!DOCTYPE html><html lang="en"><head> <meta charset="UTF-8"> <title>tab</title> <style> *{margin:0; padding:0; list-style:none;} .box{ width: 1000px; overflow: hidden; margin:100px auto 0px; } #title{ line-height: 40px; background-color: rgb(247,247,247); font-size: 16px; font-weight: bold; color: rgb(102,102,102); overflow: hidden; } #title span{ float: left; width: 166px; text-align: center; } #title span:hover{ /*color: black;*/ cursor: pointer; } #content{ margin-top: 20px; } #content li{ width: 1050px; overflow: hidden; display: none; background-color: rgb(247,247,247); } #content li div{ width: 156px; margin-right: 14px; float: left; text-align: center; } #content li div a{ font-size: 14px; color: black; line-height: 14px; /* float: left;*/ display: inline-block; margin-top: 10px; } #content li a:hover{ color: #B70606; } #content li div span{ font-size: 16px; line-height: 16px; /*float: left;*/ display: block; color: rgb(102,102,102); margin-top: 10px; } #content img{ float: left; width: 155px; height: 250px; } #title .select{ background-color: rgb(10,167,112); color: white; } #content .show{ display: block; } </style></head><body> <div> <p id="title"> <span>帥哥</span> <span>美女</span> <span>寵物</span> <span>影視</span> <span>英雄聯盟</span> <span>音樂</span> </p> <ul id="content"> <li> <div><img src="images/shuaige1.jpg"><a href="#">傑森・史坦森</a><span>狂拽炫酷炸天</span></div> <div><img src="images/shuaige2.jpg"><a href="#">傑森・史坦森</a><span>狂拽炫酷炸天</span></div> <div><img src="images/shuaige3.jpg"><a href="#">湯姆・克魯斯</a><span>高端大氣上檔次</span></div> <div><img src="images/shuaige4.jpg"><a href="#">湯姆・克魯斯</a><span>高端大氣上檔次</span></div> <div><img src="images/shuaige5.jpg"><a href="#">卷福</a><span>低調奢華有內涵</span></div> <div><img src="images/shuaige6.jpg"><a href="#">卷福</a><span>低調奢華有內涵</span></div> </li> <li> <div><img src="images/meinv1.jpg"><a href="#">美女</a><span>外猛內柔女漢子</span></div> <div><img src="images/meinv2.jpg"><a href="#">美女</a><span>外猛內柔女漢子</span></div> <div><img src="images/meinv3.jpg"><a href="#">美女</a><span>賣萌嘟嘴剪刀手</span></div> <div><img src="images/meinv4.jpg"><a href="#">美女</a><span>賣萌嘟嘴剪刀手</span></div> <div><img src="images/meinv5.jpg"><a href="#">美女</a><span>時尚亮麗小清新</span></div> <div><img src="images/meinv6.jpg"><a href="#">美女</a><span>時尚亮麗小清新</span></div> </li> <li> <div><img src="images/chongwu1.jpg"><a href="#">寵物</a><span>每隻666塊</span></div> <div><img src="images/chongwu2.jpeg"><a href="#">寵物</a><span>每隻666塊</span></div> <div><img src="images/chongwu3.jpg"><a href="#">寵物</a><span>每隻666塊</span></div> <div><img src="images/chongwu4.jpg"><a href="#">寵物</a><span>每隻666塊</span></div> <div><img src="images/chongwu5.jpg"><a href="#">寵物</a><span>每隻666塊</span></div> <div><img src="images/chongwu6.jpg"><a href="#">寵物</a><span>每隻666塊</span></div> </li> <li> <div><img src="images/yingshi1.jpg"><a href="#">哈利波特系列</a><span>經典中的經典</span></div> <div><img src="images/yingshi2.jpg"><a href="#">三傻大鬧寶萊塢</a><span>看到淚崩</span></div> <div><img src="images/yingshi3.jpg"><a href="#">變形金剛系列</a><span>過癮過癮過癮</span></div> <div><img src="images/yingshi4.jpg"><a href="#">千與千尋</a><span>夢中的小蘿莉那麼清新</span></div> <div><img src="images/yingshi5.jpeg"><a href="#">龍貓</a><span>我的龍貓啊啊啊</span></div> <div><img src="images/yingshi6.jpg"><a href="#">阿甘正傳</a><span>阿甘還是那個阿甘</span></div> </li> <li> <div><img src="images/lol1.jpg"><a href="#">寒冰射手</a><span>蠻王他媳婦</span></div> <div><img src="images/lol2.jpg"><a href="#">黑暗之女</a><span>小蘿莉一枚</span></div> <div><img src="images/lol3.jpg"><a href="#">探險家</a><span>遊戲中我最帥</span></div> <div><img src="images/lol4.jpg"><a href="#">人馬</a><span>上單大野全能</span></div> <div><img src="images/lol5.jpg"><a href="#">提莫提百萬</a><span>每天死亡百萬次。 。 </span></div> <div><img src="images/lol6.jpg"><a href="#">狼人</a><span>別給我放大</span></div> </li> <li> 待開發。 。 。 </li> </ul> </div> <script> var title=document.getElementById('title'); var content=document.getElementById('content'); var spans=title.getElementsByTagName('span'); var lis=content.getElementsByTagName('li'); for (var i = 0; i < spans.length; i++) { spans[i].index=i; spans[i].onclick=function(){ for (var j = 0; j < spans.length; j++) { spans[j].className=''; lis[j].className=''; } this.className='select'; lis[this.index].className='show'; } } </script></body></html>這段代碼的關鍵處在最後的兩個for遍歷和this指針，第一個for遍歷是為每一個span按鈕添加點擊事件，而第二個for遍歷是確定當前點擊的是哪個按鈕，相應的內容部分就很好控制出現和隱藏了；
以上就是本文的全部內容，希望對大家的學習有所幫助，也希望大家多多支持武林網。