targetOffset=$(target).offset().top; 獲取該錨點到瀏覽器頂部的距離，然後給body新增動畫

$('html,body').animate({
        scrollTop: targetOffset
    },
1000);

全部程式碼：

/*錨點動效*/
$('a[href*=#],area[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) {
         var targetOffset = $target.offset().top;
$('html,body').animate({
               scrollTop: targetOffset
            },
1000);
return false
 
;
}
   }
});