javascript - 如何使这个滚动条高于内容 120px？

Question

当我应用此脚本时，它会转到链接，但我希望它比所链接的内容高出 120 像素。

代码如下:

<script>
  $(document).ready(function(){
    // Add smooth scrolling to all links
    $("a").on('click', function(event) {

    // Make sure this.hash has a value before overriding default behavior
    if (this.hash !== 0) {
      // Prevent default anchor click behavior
      event.preventDefault();

      // Store hash
      var hash = this.hash;

      // Using jQuery's animate() method to add smooth page scroll
      // The optional number (800) specifies the number of milliseconds it takes to scroll to the specified area
      $('html, body').animate({
        scrollTop: $(hash).offset().top
      }, 800, function(){

        // Add hash (#) to URL when done scrolling (default click behavior)
        window.location.hash = hash;
      });
    } // End if
  });
});
</script>

编辑#02

这是我的 HTML、CSS 和 Java，供那些想知道的人使用:

https://codepen.io/crosso_7/pen/WYegpY

Answer 1

只需从您的计算中减去像素数量即可。

  $(document).ready(function(){
    // Add smooth scrolling to all links
    $("a").on('click', function(event) {

    // Make sure this.hash has a value before overriding default behavior
    if (this.hash !== 0) {
      // Prevent default anchor click behavior
      event.preventDefault();

      // Store hash
      var hash = this.hash;

      // Using jQuery's animate() method to add smooth page scroll
      // The optional number (800) specifies the number of milliseconds it takes to scroll to the specified area
      $('html, body').animate({
        scrollTop: $(hash).offset().top -120
      }, 800, function(){

        // Add hash (#) to URL when done scrolling (default click behavior)
        window.location.hash = hash;
      });
    } // End if
  });
});