javascript - jQuery scrollTop - 哈希值错误的问题

Question

我正在尝试对位于全屏内部的 anchor 执行 scrollTop 动画 <section> ，但在第一次点击时不会滚动到右侧 anchor 。这是我的代码。

<nav id="scroller"> <a href="#subBox1">Scroll me to sub 1</a>
 <a href="#subBox2">Scroll me to sub 2</a>
 <a href="#subBox3">Scroll me to sub 3</a>

</nav>
<section id="boxTop"></section>
<section id="boxMaster">
    <section id="subBox1">
        <p>Hello. I am the Sub 1!</p>
    </section>
    <section id="subBox2">
        <p>Hello. I am the Sub 2!</p>
    </section>
    <section id="subBox3">
        <p>Hello. I am the Sub 3!</p>
    </section>
</section>

---

$("#scroller a").click(function () {
    $('#boxMaster').animate({
        scrollTop: $(this.hash).offset().top
    }, 700);
    $("#scroller a").removeClass("active");
    $(this).addClass("active");
});

fiddle

$("#scroller a").click(function() {
  $('#boxMaster').animate({
    scrollTop: $(this.hash).offset().top
  }, 700);
  $("#scroller a").removeClass("active");
  $(this).addClass("active");
});

html,
body {
  margin: 0;
  padding: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
}
#scroller {
  position: fixed;
  top: 0;
  height: 30px;
  text-align: center;
}
#scroller a {
  color: #fff;
  margin: 0 20px;
  text-decoration: none;
}
#scroller a.active {
  font-weight: bold;
  text-decoration: underline;
}
#boxTop {
  width: 100%;
  height: 100%;
  background: red;
}
#boxMaster {
  width: 100%;
  height: 100%;
  background: blue;
  overflow: hidden;
}
#boxMaster #subBox1,
#boxMaster #subBox2,
#boxMaster #subBox3 {
  width: 100%;
  height: 100%;
  display: table;
}
p {
  color: #fff;
  text-align: center;
  display: table-cell;
  vertical-align: middle;
}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<nav id="scroller"> <a href="#subBox1">Scroll me to sub 1</a>
  <a href="#subBox2">Scroll me to sub 2</a>
  <a href="#subBox3">Scroll me to sub 3</a>

</nav>
<section id="boxTop"></section>
<section id="boxMaster">
  <section id="subBox1">
    <p>Hello. I am the Sub 1!</p>
  </section>
  <section id="subBox2">
    <p>Hello. I am the Sub 2!</p>
  </section>
  <section id="subBox3">
    <p>Hello. I am the Sub 3!</p>
  </section>
</section>

Answer 1

将当前滚动条值添加到 offset().top() 中，后者相对于框架的顶部，并删除 this.hash。请改用 this.href。

$("#scroller a").click(function () {
    var y=$('#boxMaster').scrollTop()
    $('#boxMaster').animate({
        scrollTop: $(this.href).offset().top + y
    }, 100);
});