标签:导航 利用 over 分享图片 highlight nbsp pre sim his
今日看到之前写的一段js代码,关于导航部分鼠标放上去变类,鼠标离开等效果
前端代码
<div class="con12"> <div class="left"> <ul id="liu"> <li class="chang02">长双歧杆菌</li> <li class="chang01">短双歧杆菌</li> <li class="chang01">乳双歧杆菌</li> <li class="chang01">嗜酸乳杆菌</li> <li class="chang01">罗伊氏乳杆菌</li> <li class="chang01">鼠李糖乳杆菌</li> </ul> </div> <div class="right"> <div class="show"> <div class="title"> <span class="one">长双歧杆菌</span> <span class="two">Bifidobacterium longum</span> <span class="three">11.5亿 CFU/小袋</span> </div> <div class="des"> 可降低肠道 pH,抑制致病菌的生长繁殖,达到调节肠道菌群失调和改善肠道微环境的效果<span class="biao">[7]</span>。 </div> <div class="desimg"> <img src="img/des01.jpg"> </div> </div> <div class="show none"> <div class="title"> <span class="one">短双歧杆菌</span> <span class="two">Bifidobacterium breve</span> <span class="three">11亿 CFU/小袋</span> </div> <div class="des"> 拥有较强的抗酸能力与粘附力,黏附在肠道细胞膜上,能有效阻止致病菌的入侵,给宝宝一个健康的肠道<span class="biao">[8,9]</span>。 </div> <div class="desimg"> <img src="img/duansuangqi.jpg"> </div> </div> <div class="show none"> <div class="title"> <span class="one">乳酸双歧杆菌</span> <span class="two">Bifidobacterium lactis</span> <span class="three">12亿 CFU/小袋</span> </div> <div class="des"> 乳双歧杆菌能增强宝宝的细胞免疫和体液免疫功能,提高宝宝的免疫力,让宝宝少生病<span class="biao">[10]</span>。 </div> <div class="desimg"> <img src="img/rusuangqi.jpg"> </div> </div> <div class="show none"> <div class="title"> <span class="one">鼠李糖乳杆菌</span> <span class="two">Lactobacillus rhamnosus</span> <span class="three">6.5亿 CFU/小袋</span> </div> <div class="des"> 参与宝宝消化道内菌群调节, 排除宝宝体内毒素,维持宝宝肠道健康<span class="biao">[11]</span>。 </div> <div class="desimg"> <img src="img/shulitang.jpg"> </div> </div> <div class="show none"> <div class="title"> <span class="one">罗伊氏乳杆菌</span> <span class="two">Lactobacillus reuteri</span> <span class="three">1亿 CFU/小袋</span> </div> <div class="des"> 增加肠道固水物质——短链脂肪酸的含量,软化大便,并且有很强的粘附能力,对改善肠道黏膜免疫功能,提高宝宝免疫力具有积极的作用<span class="biao">[12]</span>。 </div> <div class="desimg"> <img src="img/luoyishi.jpg"> </div> </div> <div class="show none"> <div class="title"> <span class="one">嗜酸乳杆菌</span> <span class="two">Lactobacillus acidophilus</span> <span class="three">8亿 CFU/小袋</span> </div> <div class="des"> 发酵后形成乳酸,帮助宝宝消化肠胃内的食物,提高钙、磷、铁的利用率,并且对其他乳杆菌和双歧杆菌在肠道的增殖具有积极作用<span class="biao">[13,14]</span>。 </div> <div class="desimg"> <img src="img/sishuanru.jpg"> </div> </div> </div> </div>
js代码
window.onload=function(){ var one = document.getElementById(‘liu‘); var oPoint = one.getElementsByTagName(‘li‘); var div = document.getElementsByClassName(‘show‘); var lilen = oPoint.length; for (var i = 0; i < lilen; i++) { oPoint[i].index = i; oPoint[i].onmouseover = function (){ for (var j = 0; j <lilen; j++) { oPoint[j].className = "chang01"; div[j].className += " none"; } oPoint[this.index].className = "chang02"; div[this.index].className = "show"; } } }
其中,看到
oPoint[i].index = i;
一时之间想不明白,大体好像是关于js的闭包知识,查找资料
https://segmentfault.com/a/1190000002805295
标签:导航 利用 over 分享图片 highlight nbsp pre sim his
原文地址:https://www.cnblogs.com/zst062102/p/9783529.html