jq 实现切换菜单选中状态

点击导航菜单，切换选中状态

效果：

思路：首先获取选中的URL，再通过正则判断是否相同，相同就加上相应的属性，不相同就去除相应的属性。

html代码

<div class="layui-container" style="padding: 0px; margin-top: 70px;">
    <div class="layui-row  footer-nav">
        <div class="layui-col-xs2 layui-col-sm2 item">
            <a href="{:url('/index/index/index')}">
                <img src="/public/index/images/icon/home.png">
                <div >首页</div>
            </a>
        </div>
        <div class="layui-col-xs2 layui-col-sm2  item">
            <a href="{:url('/index/index/videos')}">
                <img src="/public/index/images/icon/video.png">
                <div>视频</div>
            </a>
        </div>
        <div class="layui-col-xs2 layui-col-sm2 item">
            <a href="{:url('/index/index/music')}">
                <img src="/public/index/images/icon/music.png">
                <div>音乐</div>
            </a>
        </div>
        <div class="layui-col-xs2 layui-col-sm2 item">
            <a href="{:url('/index/index/news')}">
                <img src="/public/index/images/icon/new.png">
                <div>动态</div>
            </a>
        </div>
        <div class="layui-col-xs2 layui-col-sm2 item">
            <a href="{:url('/index/index/about')}">
                <img src="/public/index/images/icon/about.png">
                <div>关于</div>
            </a>
        </div>
    </div>
</div>

<style type="text/css">
    .active{
        color: red
    }
</style>

JQ代码

<script type="text/javascript">
    var url = location.href;
    $('.item > a').each(function () {
        pat = new RegExp('/index/index/index');
        if (pat.test(url)){
            $('.item>a').eq(0).addClass('active');
            $('.item>a>img').eq(0).attr("src","/public/index/images/icon/home_selected.png");
        }
        pat = new RegExp('/index/index/videos');
        if (pat.test(url)){
            $('.item>a').eq(0).removeClass('active');
            $('.item>a').eq(1).addClass('active');
            $('.item>a>img').eq(1).attr("src","/public/index/images/icon/video_selected.png");
        }
        pat = new RegExp('/index/index/music');
        if (pat.test(url)){
            $('.item>a').eq(1).removeClass('active');
            $('.item>a').eq(2).addClass('active');
            $('.item>a>img').eq(2).attr("src","/public/index/images/icon/music_selected.png");
        }
        pat = new RegExp('/index/index/news');
        if (pat.test(url)){
            $('.item>a').eq(2).removeClass('active');
            $('.item>a').eq(3).addClass('active');
            $('.item>a>img').eq(3).attr("src","/public/index/images/icon/new_selected.png");
        }
        pat = new RegExp('/index/index/about');
        if (pat.test(url)){
            $('.item>a').eq(3).removeClass('active');
            $('.item>a').eq(4).addClass('active');
            $('.item>a>img').eq(4).attr("src","/public/index/images/icon/about_selected.png");
        }
    });
</script>

原文地址：https://www.cnblogs.com/zxf100/p/11569388.html