html 单击锚链接时无法平滑滚动

jfgube3f  于 2023-03-16  发布在  其他
关注(0)|答案(1)|浏览(153)

我在我的页面上有几个超链接。用户访问www.example.com时会看到page.to,这使它很有吸引力。我可以在同一页面内将页面滚动到其他部分。我添加了香草JavaScript来获得平滑滚动,但它似乎不起作用。我想知道为什么不起作用。代码有什么问题?

// Select all links with hashes
      const links = document.querySelectorAll('a[href^="#"]');
      // Add a click event listener to each link
      links.forEach(link => {
        link.addEventListener('click', event => {
          // Prevent default anchor behavior
          event.preventDefault();
          // Get the target element and its top offset
          const targetId = link.hash.slice(1);
          const targetElement = document.getElementById(targetId);
          if (!targetElement) {
            console.error(`Unable to find element with id "${targetId}"`);
            return;
          }
          const targetOffset = targetElement.offsetTop;
          // Scroll smoothly to the target element
          window.scrollTo({
            top: targetOffset,
            behavior: 'smooth'
          });
        });
      });
<!DOCTYPE html>
<html>
  <head>
    <meta charset="UTF-8">
    <title>Smooth Scroll Example</title>
  </head>
  <body>
    <nav>
      <ul>
        <li><a href="#section1">Section 1</a></li>
        <li><a href="#section2">Section 2</a></li>
        <li><a href="#section3">Section 3</a></li>
      </ul>
    </nav>
    <main>
      <section id="section1">
        <h1>Section 1</h1>
         <p>
          Phasellus enim libero, blandit vel sapien vitae, condimentum ultricies magna.
          Lorem ipsum is a placeholder text commonly used in design and typesetting.
           Phasellus enim libero, blandit vel sapien vitae, condimentum ultricies magna.
          Lorem ipsum is a placeholder text commonly used in design and typesetting.
           Phasellus enim libero, blandit vel sapien vitae, condimentum ultricies magna.
          Lorem ipsum is a placeholder text commonly used in design and typesetting.
           Phasellus enim libero, blandit vel sapien vitae, condimentum ultricies magna.
          Lorem ipsum is a placeholder text commonly used in design and typesetting.
        </p>
      </section>
      <section id="section2">
        <h1>Section 2</h1>
        <p>
          Phasellus enim libero, blandit vel sapien vitae, condimentum ultricies magna.
          Lorem ipsum is a placeholder text commonly used in design and typesetting.
           Phasellus enim libero, blandit vel sapien vitae, condimentum ultricies magna.
          Lorem ipsum is a placeholder text commonly used in design and typesetting.
           Phasellus enim libero, blandit vel sapien vitae, condimentum ultricies magna.
          Lorem ipsum is a placeholder text commonly used in design and typesetting.
           Phasellus enim libero, blandit vel sapien vitae, condimentum ultricies magna.
          Lorem ipsum is a placeholder text commonly used in design and typesetting.
           <p>
          Phasellus enim libero, blandit vel sapien vitae, condimentum ultricies magna.
          Lorem ipsum is a placeholder text commonly used in design and typesetting.
           Phasellus enim libero, blandit vel sapien vitae, condimentum ultricies magna.
          Lorem ipsum is a placeholder text commonly used in design and typesetting.
           Phasellus enim libero, blandit vel sapien vitae, condimentum ultricies magna.
          Lorem ipsum is a placeholder text commonly used in design and typesetting.
           Phasellus enim libero, blandit vel sapien vitae, condimentum ultricies magna.
          Lorem ipsum is a placeholder text commonly used in design and typesetting.
        </p>
        </p>
      </section>
      <section id="section3">
        <h1>Section 3</h1>
 <p>
          Phasellus enim libero, blandit vel sapien vitae, condimentum ultricies magna.
          Lorem ipsum is a placeholder text commonly used in design and typesetting.
           Phasellus enim libero, blandit vel sapien vitae, condimentum ultricies magna.
          Lorem ipsum is a placeholder text commonly used in design and typesetting.
           Phasellus enim libero, blandit vel sapien vitae, condimentum ultricies magna.
          Lorem ipsum is a placeholder text commonly used in design and typesetting.
           Phasellus enim libero, blandit vel sapien vitae, condimentum ultricies magna.
          Lorem ipsum is a placeholder text commonly used in design and typesetting.
           <p>
          Phasellus enim libero, blandit vel sapien vitae, condimentum ultricies magna.
          Lorem ipsum is a placeholder text commonly used in design and typesetting.
           Phasellus enim libero, blandit vel sapien vitae, condimentum ultricies magna.
          Lorem ipsum is a placeholder text commonly used in design and typesetting.
           Phasellus enim libero, blandit vel sapien vitae, condimentum ultricies magna.
          Lorem ipsum is a placeholder text commonly used in design and typesetting.
           Phasellus enim libero, blandit vel sapien vitae, condimentum ultricies magna.
          Lorem ipsum is a placeholder text commonly used in design and typesetting.
        </p>
           <p>
          Phasellus enim libero, blandit vel sapien vitae, condimentum ultricies magna.
          Lorem ipsum is a placeholder text commonly used in design and typesetting.
           Phasellus enim libero, blandit vel sapien vitae, condimentum ultricies magna.
          Lorem ipsum is a placeholder text commonly used in design and typesetting.
           Phasellus enim libero, blandit vel sapien vitae, condimentum ultricies magna.
          Lorem ipsum is a placeholder text commonly used in design and typesetting.
           Phasellus enim libero, blandit vel sapien vitae, condimentum ultricies magna.
          Lorem ipsum is a placeholder text commonly used in design and typesetting.
        </p>
        </p>
      </section>
    </main>
      </body>
</html>
rkkpypqq

rkkpypqq1#

您的代码可以正常工作,但可以在调试之前使用委托进行简化
scrollTo的替代方法是scrollIntoView

document.querySelector('nav').addEventListener('click', (e) => {
  let tgt = e.target.closest('li').querySelector('a'); // make sure the whole LI can be used
  if (!tgt) return;
  // Prevent default anchor behavior
  e.preventDefault();
  // Get the target element
  const targetId = tgt.hash.slice(1);
  const targetElement = document.getElementById(targetId);
  if (!targetElement) {
    console.error(`Unable to find element with id "${targetId}"`);
    return;
  }
  targetElement.scrollIntoView({ behavior: 'smooth' });
});
<nav>
  <ul>
    <li><a href="#section1">Section 1</a></li>
    <li><a href="#section2">Section 2</a></li>
    <li><a href="#section3">Section 3</a></li>
  </ul>
</nav>
<main>
  <section id="section1">
    <h1>Section 1</h1>
    <p>
      Phasellus enim libero, blandit vel sapien vitae, condimentum ultricies magna. Lorem ipsum is a placeholder text commonly used in design and typesetting. Phasellus enim libero, blandit vel sapien vitae, condimentum ultricies magna. Lorem ipsum is a placeholder
      text commonly used in design and typesetting. Phasellus enim libero, blandit vel sapien vitae, condimentum ultricies magna. Lorem ipsum is a placeholder text commonly used in design and typesetting. Phasellus enim libero, blandit vel sapien vitae,
      condimentum ultricies magna. Lorem ipsum is a placeholder text commonly used in design and typesetting.
    </p>
  </section>
  <section id="section2">
    <h1>Section 2</h1>
    <p>
      Phasellus enim libero, blandit vel sapien vitae, condimentum ultricies magna. Lorem ipsum is a placeholder text commonly used in design and typesetting. Phasellus enim libero, blandit vel sapien vitae, condimentum ultricies magna. Lorem ipsum is a placeholder
      text commonly used in design and typesetting. Phasellus enim libero, blandit vel sapien vitae, condimentum ultricies magna. Lorem ipsum is a placeholder text commonly used in design and typesetting. Phasellus enim libero, blandit vel sapien vitae,
      condimentum ultricies magna. Lorem ipsum is a placeholder text commonly used in design and typesetting.
      <p>
        Phasellus enim libero, blandit vel sapien vitae, condimentum ultricies magna. Lorem ipsum is a placeholder text commonly used in design and typesetting. Phasellus enim libero, blandit vel sapien vitae, condimentum ultricies magna. Lorem ipsum is a placeholder
        text commonly used in design and typesetting. Phasellus enim libero, blandit vel sapien vitae, condimentum ultricies magna. Lorem ipsum is a placeholder text commonly used in design and typesetting. Phasellus enim libero, blandit vel sapien vitae,
        condimentum ultricies magna. Lorem ipsum is a placeholder text commonly used in design and typesetting.
      </p>
  </section>
  <section id="section3">
    <h1>Section 3</h1>
    <p>
      Phasellus enim libero, blandit vel sapien vitae, condimentum ultricies magna. Lorem ipsum is a placeholder text commonly used in design and typesetting. Phasellus enim libero, blandit vel sapien vitae, condimentum ultricies magna. Lorem ipsum is a placeholder
      text commonly used in design and typesetting. Phasellus enim libero, blandit vel sapien vitae, condimentum ultricies magna. Lorem ipsum is a placeholder text commonly used in design and typesetting. Phasellus enim libero, blandit vel sapien vitae,
      condimentum ultricies magna. Lorem ipsum is a placeholder text commonly used in design and typesetting.
      <p>
        Phasellus enim libero, blandit vel sapien vitae, condimentum ultricies magna. Lorem ipsum is a placeholder text commonly used in design and typesetting. Phasellus enim libero, blandit vel sapien vitae, condimentum ultricies magna. Lorem ipsum is a placeholder
        text commonly used in design and typesetting. Phasellus enim libero, blandit vel sapien vitae, condimentum ultricies magna. Lorem ipsum is a placeholder text commonly used in design and typesetting. Phasellus enim libero, blandit vel sapien vitae,
        condimentum ultricies magna. Lorem ipsum is a placeholder text commonly used in design and typesetting.
      </p>
      <p>
        Phasellus enim libero, blandit vel sapien vitae, condimentum ultricies magna. Lorem ipsum is a placeholder text commonly used in design and typesetting. Phasellus enim libero, blandit vel sapien vitae, condimentum ultricies magna. Lorem ipsum is a placeholder
        text commonly used in design and typesetting. Phasellus enim libero, blandit vel sapien vitae, condimentum ultricies magna. Lorem ipsum is a placeholder text commonly used in design and typesetting. Phasellus enim libero, blandit vel sapien vitae,
        condimentum ultricies magna. Lorem ipsum is a placeholder text commonly used in design and typesetting.
      </p>
  </section>
</main>

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