window.onload = function() {
var oUl1 = document.getElementById("ul1");
var aLi = oUl1.getElementsByTagName("li");
var oDiv = document.getElementById("tab-list");
var aDiv = oDiv.getElementsByTagName("div");
for(var i = 0; i < aLi.length; i++) {
aLi[i].index = i;
aLi[i].onmouseover = function() {
for(var i = 0; i < aLi.length; i++) {
aLi[i].className = "";
}
this.className = "active";
for(var j = 0; j < aDiv.length; j++) {
aDiv[j].className = "hide";
}
aDiv[this.index].className = "show";
}
}
}
这个index是索引的意思吗 怎么用的 还有就是代码有点不懂
window.onload = function() { //网页加载完执行该函数 var oUl1 = document.getElementById("ul1"); //获取id为ul1的元素存入oUl1 var aLi = oUl1.getElementsByTagName("li"); //获取oUl1中标签为li的元素 var oDiv = document.getElementById("tab-list");//获取id为tab-list的元素存入oDiv var aDiv = oDiv.getElementsByTagName("div"); //获取oDIv中标签为div的元素 for(var i = 0; i < aLi.length; i++) { //循环aLi aLi[i].index = i; //aLi的下标赋值为i aLi[i].onmouseover = function() { //滑动触发函数 for(var i = 0; i < aLi.length; i++) { aLi[i].className = ""; //循环为aLi添加class } this.className = "active"; //当前对象的class名为active for(var j = 0; j < aDiv.length; j++) { aDiv[j].className = "hide"; //循环为aDiv添加类名为hide } aDiv[this.index].className = "show"; //aDiv的class=“show” } } }
http://blog.csdn.net/kuangruike/article/details/50848585 这是对aLi[i].index = i;的解释