Question

我的项目中有一个值超过 50 行的表。如果我在表格中间，则无法看到滚动条以垂直滚动。

根据下面的示例，当我向下滚动页面时，我希望顶部垂直滚动条被固定。

当页面向下滚动时，任何人都可以帮助我实现固定位置的滚动条。如果您有任何疑问，请告诉我。

滚动前：

滚动后：

$(function(){
    $(".wrapper1").scroll(function(){
        $(".wrapper2")
            .scrollLeft($(".wrapper1").scrollLeft());
    });
    $(".wrapper2").scroll(function(){
        $(".wrapper1")
            .scrollLeft($(".wrapper2").scrollLeft());
    });
});

.wrapper1,
.wrapper2 {
    width: 800px;
    border: none 0px RED;
    overflow-x: scroll;
    overflow-y: hidden;
}
.wrapper1 {
    height: 20px;
}

.div1 {
    width: 1000px;
    height: 20px;
}
.div2 {
    width: 1000px;
    background-color: #88ff88;
    overflow: auto;
}

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<div class="wrapper1">
    <div class="div1"></div>
</div>
<div class="wrapper2">
    <div class="div2">
        <p>
            aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd
        </p>
        <p>
            aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd
        </p>
        <p>
            aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd
        </p>
        <p>
            aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd
        </p>
        <p>
            aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd
        </p>
        <p>
            aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd
        </p>
        <p>
            aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd
        </p>
        <p>
            aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd
        </p>
        <p>
            aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd
        </p>
        <p>
            aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd
        </p>
        <p>
            aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd
        </p>
        <p>
            aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd
        </p>
        <p>
            aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd
        </p>
        <p>
            aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd
        </p>
        <p>
            aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd
        </p>
        <p>
            aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd
        </p>
        <p>
            aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd
        </p>
        <p>
            aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd
        </p>
        <p>
            aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd
        </p>
        <p>
            aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd
        </p>
        <p>
            aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd
        </p>
        <p>
            aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd
        </p>
        <p>
            aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd
        </p>
        <p>
            aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd
        </p>
    </div>
</div>

Answer 1

你给 wrapper1 class position: fixed 属性，你的问题就会解决

Answer 2

这是使用按钮滚动的示例。并且 Button 可以固定定位，这样它就不会滚动

滚动

document.querySelector('.wrapper2').scrollLeft += 40; //Right

document.querySelector('.wrapper2').scrollLeft -= 40; //left

获得平滑效果

scroll-behavior: smooth;

const buttonRight = document.getElementById('scrollright');
const buttonLeft = document.getElementById('scrollleft');
buttonRight.onclick = function() {
  document.querySelector('.wrapper2').scrollLeft += 40;
};
buttonLeft.onclick = function() {
  document.querySelector('.wrapper2').scrollLeft -= 40;
};

.wrapper1,
.wrapper2 {
  width: 800px;
  border: none 0px RED;
  overflow-x: scroll;
  overflow-y: hidden;
  scroll-behavior: smooth;
}

.wrapper1 {
  height: 20px;
}

.div1 {
  width: 1000px;
  height: 20px;
}

.div2 {
  width: 1000px;
  background-color: #88ff88;
  overflow: auto;
}

#scrollleft {
  position: fixed;
  top: 50%;
}

#scrollright {
  position: fixed;
  top: 50%;
  right: 0;
}

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<div class="wrapper1">
  <div class="div1"></div>
</div>
<div class="nav-btn ">
  <button class="" id="scrollleft">&lt;</button>
  <button class="" id="scrollright">&gt;</button>
</div>

<div class="wrapper2">
  <div class="div2">
    <p>
      aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd
    </p>
    <p>
      aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd
    </p>
    <p>
      aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd
    </p>
    <p>
      aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd
    </p>
    <p>
      aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd
    </p>
    <p>
      aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd
    </p>
    <p>
      aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd
    </p>
    <p>
      aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd
    </p>
    <p>
      aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd
    </p>
    <p>
      aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd
    </p>
    <p>
      aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd
    </p>
    <p>
      aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd
    </p>
    <p>
      aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd
    </p>
    <p>
      aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd
    </p>
    <p>
      aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd
    </p>
    <p>
      aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd
    </p>
    <p>
      aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd
    </p>
    <p>
      aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd
    </p>
    <p>
      aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd
    </p>
    <p>
      aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd
    </p>
    <p>
      aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd
    </p>
    <p>
      aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd
    </p>
    <p>
      aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd
    </p>
    <p>
      aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd aaaa bbbb cccc dddd
    </p>
  </div>
</div>

将滚动条位置更改为固定

2 个答案: