Html选项卡切换效果

效果原型：

代码实现：

• html代码

<div id="divPage" style="800px;height:750px;padding:10px;background:#fafafa;">
    <p style="margin-bottom:20px;">
        <a class="sel_btn ch_cls" id="sel_btn1" href="javascrip:;"
                onclick="changeSelBtn(1)">测试方案1</a>
            <span class="arrowRight"></span>
        <a class="sel_btn" id="sel_btn2" href="javascrip:;" 
                onclick="changeSelBtn(2)">测试方案2</a>
            <span class="arrowRight"></span>
        <a class="sel_btn" id="sel_btn3" href="javascrip:;" 
                onclick="changeSelBtn(3)">测试方案3</a>
    </p>
    <div class="demoPage showPage" id="demoPage1">
        <p>方案1</P>
    </div>
    <div class="demoPage" id="demoPage2">
        <p>方案2</P>
    </div>
    <div class="demoPage" id="demoPage3">
        <p>方案3</P>
    </div>
</div>

• css代码

/*按钮样式切换*/
.sel_btn{
    width: 140px;
    height: 40px;
    line-height: 40px;
    padding: 0 11px;
    background: inherit;
    background-color: #e4e4e4;
    border: 1px solid rgba(22, 155, 213, 1);
    border-radius: 5px;
    display: inline-block;
    text-decoration: none;
    font-family: 'Arial Normal', 'Arial';
    font-weight: 400;
    font-style: normal;
    font-size: 12px;
    outline: none;
    text-align: center;
    color: rgba(22, 155, 213, 1);
}
.ch_cls{
    background: rgba(22, 155, 213, 1);
    color: #fff;
}
/*箭头容器*/
.arrowRight{
    width:40px;
    height:13px;
    display: inline-block;
    position: relative;
}
.arrowRight:before,.arrowRight:after{
    content: '';
    border-color: transparent;
    border-style: solid;
    position: absolute;
}
.arrowRight:after{
    width: 60%;
    height: 30%;
    background-color: #555;
    top: 5px;
    left: 0;
}
.arrowRight:before{
    border-left-color: #555;
    border-width: 10px;
    left: 30px;
    top: 0;
}
.packagesopTable tr td{
    width: 90px;
    height:30px;
    text-align: center;
}
/*DIV显示控制*/
.demoPage{
    display:none;
}
.showPage{
    display:block;
}

• jQuery代码

function changeSelBtn(index){
    if(index!=null){
        // 按钮
        $(".sel_btn").removeClass('ch_cls');
        $("#sel_btn"+index).addClass('ch_cls');
        // DIV
        $(".demoPage").removeClass('showPage');
        $("#demoPage"+index).addClass('showPage');
    }
}