vue---导航栏点击跳转到对应位置

html：

<div id="nav" >

        <a class="xdapai" data-id="dapai" @click="goscrol">大牌</a>

        <a class="xdianfeng"  data-id="dianfeng" @click="goscrol">巅峰</a>

        <a  class="xbaokuan" data-id="baokuan" @click="goscrol">爆款</a>

</div>

js:

methods: {
    goscrol($event) {
      var id = $event.target.dataset.id;
      var $scrollHeight = $("#" + id).offset().top;
      $("html, body").animate(
        {
          scrollTop: $scrollHeight
        },
        500
      );
    },


},
mounted() {
    
    //导航栏操作,当导航栏滚动到顶部，即导航栏吸附在顶部不动。
    window.onload = function() {
      var arr = [
        { id: "dapai", height: $("#dapai").height() },
        { id: "dianfeng", height: $("#dianfeng").height() },
        { id: "baokuan", height: $("#baokuan").height() },
        { id: "freexi", height: $("#freexi").height() },
        { id: "fuli", height: $("#fuli").height() }
      ];

    //兼容性
      var box = document.getElementById("nav");
      var topmargin = box.offsetTop;
      var userAgent = navigator.userAgent.toLowerCase();
      var isIphone = userAgent.match(/iphone os/i) == "iphone os";
      var isAndroid = userAgent.match(/android/i) == 'android';
      $(window).on("scroll", function() {
        var scroll = window.pageYOffset || document.documentElement.scrollTop || document.body.scrollTop;
		if(isIphone){
			scroll >= topmargin - 50 ? $("#nav").addClass("postplayIOS") : $("#nav").removeClass("postplayIOS");
		}else{
			scroll >= topmargin - 50 ? $("#nav").addClass("postplayAndroid") : $("#nav").removeClass("postplayAndroid");
		}
　　　　　　//当导航栏离开顶部时，对应的导航选中样式消失
	  if (document.getElementById(arr[0].id).offsetTop - $(window).scrollTop() > 90 ) {
            $(".x" + arr[0].id).removeClass("redfont");
          }

        for (var i = 0; i < arr.length; i++) {
          var nowbox = document.getElementById(arr[i].id);
          if (nowbox.offsetTop - $(window).scrollTop() < 90) {
            $(".x" + arr[i].id).addClass("redfont").siblings().removeClass("redfont");
          }
        }
      });
    };

}    

 css:

#nav {

  background: #f37938;

  display: flex;

  100%;

}

#nav a {

  display: block;

  20%;

  height: 39px;

  line-height: 39px;

  text-align: center;

  color: #fff;

}

.postplayIOS {

  position: sticky;

  position: -webkit-sticky;

  left: 0;

  top: 0;

}

.postplayAndroid {

  position: fixed;

  left: 0;

  top: 0;

}

#nav .redfont {

  border-bottom: 2px solid #f9f100;

}