一、导航栏
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title></title>
<style type="text/css">
.div1 {
width: 100px;
height: 50px;
background-color: red;
float: left;
margin-right: 10px;
position: relative;
}
.div2 {
width: 100px;
height: 230px;
background-color: green;
float: left;
margin-right: 10px;
position: absolute;
top: 50px;
display: none;
}
</style>
</head>
<body>
<div class="div1" id="div_1">
<div class="div2">
</div>
</div>
<div class="div1" id="div_2">
<div class="div2">
</div>
</div>
<div class="div1" id="div_3">
<div class="div2">
</div>
</div>
<div class="div1" id="div_4">
<div class="div2">
</div>
</div>
<div class="div1" id="div_5">
<div class="div2">
</div>
</div>
</body>
</html>
<script type="text/javascript">
var a = document.getElementsByClassName(‘div1‘);
var b = document.getElementsByClassName(‘div2‘);
for (var i = 0; i < a.length; i++) {
//鼠标移入
a[i].index = i;//记录一个int类型的值，使div1和div2对应起来鼠标移入移出的时候显示相应的下拉菜单
a[i].onmouseover = function () {
a[this.index].style.backgroundColor = ‘purple‘;//鼠标移入的时候div1变色
b[this.index].style.display = ‘block‘;
}
//鼠标移除
a[i].onmouseout = function () {
a[this.index].style.backgroundColor = ‘red‘;//鼠标移除的时候div1恢复原来的颜色
b[this.index].style.display = ‘none‘;
}
}
</script>
二、选项卡
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title></title>
<style type="text/css">
.div1 {
width: 100px;
height: 30px;
float: left;
margin-right: 10px;
background-color: red;
}
</style>
<style type="text/css">
.div2 {
top: 40px;
background-color: blue;
width: 540px;
height: 300px;
position: absolute;
z-index: 100;
}
</style>
</head>
<body>
<div class="div1" id="d1"></div>
<div class="div1" id="d2"></div>
<div class="div1" id="d3"></div>
<div class="div1" id="d4"></div>
<div class="div1" id="d5"></div>
<div class="div2" id="da" style="z-index: 101;">111</div>
<div class="div2" id="db">222</div>
<div class="div2" id="dc">333</div>
<div class="div2" id="de">444</div>
<div class="div2" id="df">555</div>
</body>
</html>
<script type="text/javascript">
var a = document.getElementsByClassName(‘div1‘);
var b = document.getElementsByClassName(‘div2‘);
var count = 102;
for (var i = 0; i < a.length; i++) {
//鼠标移入
a[i].onmouseover = function () {
if (this.style.backgroundColor != ‘black‘) {//鼠标移入的时候只要不是黑色都变成黄色
this.style.backgroundColor = ‘yellow‘;
}
}
//鼠标移出
a[i].onmouseout = function () {
if (this.style.backgroundColor == ‘yellow‘) {
this.style.backgroundColor = ‘red‘;
}
}
//鼠标点击
a[i].index = i;//用于计数比较的一定要放在点击事件的外面
a[i].onclick = function () {
for (var j = 0; j < a.length; j++) {
a[j].style.backgroundColor = ‘red‘;
}
this.style.backgroundColor = ‘black‘;
//选项卡切换
b[this.index].style.zIndex = count;
count++;
}
}
</script>
时间： 2024-10-11 20:28:15