tab页的使用方法

css代码：

#main{
margin:0px;
width:100%;
height:540px;
background:url(m.jpg) no-repeat;
background-size:cover;
}
#head{
text-align: center;
height:40px;
width:100%;
}
h3 {
width: 120px;
height: 20px;
margin:;
float: left;
text-align: center;
}
.tab-head{
height: 20px;
width: 100%;
}
.tab-content {
width: 100%;
height: 520px;
 align:center;
}
.tab-content div{
text-align:center;
display: none;
}
.selected {
background-color: cornflowerblue;
}
.tab-content .show{
display: block;
}               

js代码：

<script type="text/javascript">
var tab1 = document.getElementById('tab1'),
tab2 = document.getElementById('tab2'),
tab3 = document.getElementById('tab3'),
c1 = document.getElementById('c1'),
c2 = document.getElementById('c2'),
c3 = document.getElementById('c3');

function changeTab1() {
tab1.className = 'selected';
tab2.className = '';
tab3.className = '';
c1.className = 'show'
c2.className = '';
c3.className = '';
}

function changeTab2() {
tab1.className = '';
tab2.className = 'selected';
tab3.className = '';
c1.className = '';
c2.className = 'show';
c3.className = '';
}

function changeTab3() {
tab1.className = '';
tab2.className = '';
tab3.className = 'selected';
c1.className = ''
c2.className = '';
c3.className = 'show';
}
</script>

html代码：

<div id=main>
<div id=head>
<h1>***个人主页</h1>
</div>
 <div class="tab-head">
            <h3 id="tab1" onmouseover="changeTab1()" class="selected">基本资料</h3>
            <h3 id="tab2" onmouseover="changeTab2()">学习经历</h3>
            <h3 id="tab3" onmouseover="changeTab3()">最新动态</h3>
        </div>
        <div class="tab-content">
            <div id="c1" class="show">
            content1
            </div>
            <div id="c2">content2</div>
            <div id="c3">content3</div>
        </div>
</div>

主要利用了onmouseover事件，当鼠标在指定区域时，触发js中的函数，使该指定区域对应的div中的display属性变成block（将该div元素显示为块级元素），其他的则为none（隐藏）。

运行结果截图：