正确的语法是:

//Smooth scrolling with links
$('a[href^=\\#]').on('click', function(event){     
    event.preventDefault();
    $('html,body').animate({scrollTop:$(this.hash).offset().top}, 500);
});

// Smooth scrolling when the document is loaded and ready
$(document).ready(function(){
  $('html,body').animate({scrollTop:$(location.hash).offset().‌​top}, 500);
});

简化:干

function smoothScrollingTo(target){
  $('html,body').animate({scrollTop:$(target).offset().​top}, 500);
}
$('a[href^=\\#]').on('click', function(event){     
    event.preventDefault();
    smoothScrollingTo(this.hash);
});
$(document).ready(function(){
  smoothScrollingTo(location.hash);
});

href^=\\#说明:

^表示它匹配包含# char的内容。因此，只匹配锚，以确保它是一个链接到同一页面(感谢Peter Wong的建议)。 \\是因为#在CSS选择器中是一个特殊字符，所以我们必须转义它。

经过测试和验证的代码

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

// Make sure this.hash has a value before overriding default behavior
if (this.hash !== "") {
  // 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
  jQuery('html, body').animate({
    scrollTop: jQuery(hash).offset().top
  }, 800, function(){

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

好吧，解决方案取决于问题的类型，我使用javascript动画方法按钮点击。我使用的代码从波纹链接导航栏

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

$(document).ready(function () {
  $(".js--scroll-to-plans").click(function () {
    $("body,html").animate(
      {
        scrollTop: $(".js--section-plans").offset().top,
      },
      1000
    );
    return false;
  });

  $(".js--scroll-to-start").click(function () {
    $("body,html").animate(
      {
        scrollTop: $(".js--section-features").offset().top,
      },
      1000
    );
    return false;
  });

  $('a[href*="#"]')
  // Remove links that don't actually link to anything
  .not('[href="#"]')
  .not('[href="#0"]')
  .click(function(event) {
    // On-page links
    if (
      location.pathname.replace(/^\//, '') == this.pathname.replace(/^\//, '') 
      && 
      location.hostname == this.hostname
    ) {
      // Figure out element to scroll to
      var target = $(this.hash);
      target = target.length ? target : $('[name=' + this.hash.slice(1) + ']');
      // Does a scroll target exist?
      if (target.length) {
        // Only prevent default if animation is actually gonna happen
        event.preventDefault();
        $('html, body').animate({
          scrollTop: target.offset().top
        }, 1000, function() {
          // Callback after animation
          // Must change focus!
          var $target = $(target);
          $target.focus();
          if ($target.is(":focus")) { // Checking if the target was focused
            return false;
          } else {
            $target.attr('tabindex','-1'); // Adding tabindex for elements not focusable
            $target.focus(); // Set focus again
          };
        });
      }
    }
  });
});

要求jquery和动画锚标签与指定的名称而不是id，同时添加哈希到浏览器url。还修复了大多数jquery答案中#符号没有带转义反斜杠前缀的错误。返回按钮，不幸的是，不能正确地导航回以前的哈希链接…

$('a[href*=\\#]').click(function (event)
{
    let hashValue = $(this).attr('href');
    let name = hashValue.substring(1);
    let target = $('[name="' + name + '"]');
    $('html, body').animate({ scrollTop: target.offset().top }, 500);
    event.preventDefault();
    history.pushState(null, null, hashValue);
});

不需要任何js只是使用滚动行为:平滑的html标签就是这样

html{
scroll-behavior: smooth;
}

HTML

<a href="#target" class="smooth-scroll">
    Link
</a>
<div id="target"></div>

或使用绝对完整的URL

<a href="https://somewebsite.com/#target" class="smooth-scroll">
    Link
</a>
<div id="target"></div>

jQuery

$j(function() {
    $j('a.smooth-scroll').click(function() {
        if (
                window.location.pathname.replace(/^\//, '') == this.pathname.replace(/^\//, '')
            &&  window.location.hostname == this.hostname
        ) {
            var target = $j(this.hash);
            target = target.length ? target : $j('[name=' + this.hash.slice(1) + ']');
            if (target.length) {
                $j('html,body').animate({
                    scrollTop: target.offset().top - 70
                }, 1000);
                return false;
            }
        }
    });
});