Je kuhumu kwa kuzungumza indizi ya kusoma

Mwongozo wa kuhakikisha kuzungumza indizi ya kusoma kwa CSS na JavaScript.

Kutoka kushika: Kina ya kuzama kufikia kina ya kuzingatia

Je kuhumu kwa kuzungumza indizi ya kusoma

kitu cha kumi - wengia HTML

<div class="header">
  <h2>Scroll Indicator</h2>
  <div class="progress-container">
    <div class="progress-bar" id="myBar"></div>
  </div>
</div>
<div>content...</div>

kitu cha kumi - wengia CSS

/* 设置标题样式：固定位置（始终保持在顶部） */
.header {
  position: fixed;
  top: 0;
  z-index: 1;
  width: 100%;
  background-color: #f1f1f1;
}
/* 进度容器（灰色背景） */
.progress-container {
  width: 100%;
  height: 8px;
  background: #ccc;
}
/* 进度条（滚动指示器） */
.progress-bar {
  height: 8px;
  background: #04AA6D;
  width: 0%;
}

kitu cha kumi - wengia JavaScript

// 当用户滚动页面时，执行 myFunction
window.onscroll = function() {myFunction()};
function myFunction() {
  var winScroll = document.body.scrollTop || document.documentElement.scrollTop;
  var height = document.documentElement.scrollHeight - document.documentElement.clientHeight;
  var scrolled = (winScroll / height) * 100;
  document.getElementById("myBar").style.width = scrolled + "%";
}

Kutoka kushika: Kina ya kuzama kufikia kina ya kuzingatia