如何将动画滚动到特定 ID 减去 X 距离？

Question

我想滚动到特定 div，然后让它在目标 div 之前大约 70 像素处停止。这是我得到的教程：

https://css-tricks.com/snippets/jquery/smooth-scrolling/

$(function() {
  $('a[href*=#]:not([href=#])').click(function() {
    if (location.pathname.replace(/^\//,'') == this.pathname.replace(/^\//,'') && location.hostname == this.hostname) {
      var target = $(this.hash);
      target = target.length ? target : $('[name=' + this.hash.slice(1) +']');
      if (target.length) {
        $('html,body').animate({
          scrollTop: target.offset().top
        }, 1000);
        return false;
      }
    }
  });
});

Answer 1

从目标 div 顶部减去 70

$(function() {
      $('a[href*=#]:not([href=#])').click(function() {
        if (location.pathname.replace(/^\//,'') == this.pathname.replace(/^\//,'') && location.hostname == this.hostname) {
          var target = $(this.hash);
          target = target.length ? target : $('[name=' + this.hash.slice(1) +']');
          if (target.length) {
            $('html,body').animate({
              scrollTop: target.offset().top - 70
            }, 1000);
            return false;
          }
    }
  });
});