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jQuery operates anchor point dynamic displacement

php中世界最好的语言Original: 2018-04-19 15:56:082254browse

This time I will bring you the dynamic displacement of the jQuery anchor point. What are the precautions for the dynamic displacement of the jQuery anchor point? The following is a practical case, let's take a look.

Use the jQuery animate() method to achieve smooth scrolling effects on the page

$('html, body').animate({
scrollTop: $(hash).offset().top
}, 800, function(){
window.location.hash = hash;
});

Simple instance code:

<!DOCTYPE html>
<html>
<head>
<scriptsrc="https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
<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 !== "") {
   // 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>
 <style>
body, html, .main {
  height: 100%;
}
  
section {
  min-height: 100%;
}
</style>
</head>
<body>
<ahref="#section2"rel="external nofollow"style="
   font-size: 30px;
   font-weight: bold;
   text-align: center;
">点击此处平滑滚动到第二部分</a>
<pclass="main">
 <section></section>
</p>
<pclass="main"id="section2">
 <sectionstyle="
   background-color: #03c03c;
   color: #fff;
   font-size: 30px;
   text-align: center">
   SECTION 2
 </section>
</p>
</body>
</html>

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jQuery operates anchor point dynamic displacement

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