如何创建一个返回页面顶部的按钮？

Question

I created a button with a link to go back to the top of the page.

Here is the JS code :

(function ($) {

/*--Scroll Back to Top Button Show--*/

$(window).scroll(function(){
    if ($(this).scrollTop() > 100) {
        $('#back-to-top').fadeIn();
    } else {
        $('#back-to-top').fadeOut();
    }
});

//Click event scroll to top button jquery

$('#back-to-top').click(function(){
    $('html, body').animate({scrollTop : 0},600);
    return false;
});

})(jQuery);

Here is the HTML code:

<a id="back-to-top" href="#">
  <i class="fas fa-chevron-circle-up fa-4x"></i>
</a>

It works very well, but I want to create a button instead of a link.

I tested the following HTML code but it does not work. There is the button but it does not go back up the page :

<button type="button" id="back-to-top" href="#">
  <i class="fas fa-chevron-circle-up fa-4x"></i>
</button>

How to create a button to go back to the top of the page ?

Answer 1

It is same code for both. But notice if you didn't remove tag, than could happend that you have duplicate id and button will not work

 (function ($) { /*--Scroll Back to Top Button Show--*/ $(window).scroll(function(){ if ($(this).scrollTop() > 100) { $('#back-to-top').fadeIn(); } else { $('#back-to-top').fadeOut(); } }); //Click event scroll to top button jquery $('#back-to-top').click(function(){ $('html, body').animate({scrollTop : 0},600); return false; }); })(jQuery);

 body { min-height: 1000px; } button{ position: fixed; right: 5px; bottom: 10px; } a{ position: fixed; left: 5px; bottom: 10px; }

 <script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script> <button id="back-to-top" type="button"> Button </button>

Answer 2

The javascript to take you to the top of a page is...

window.scrollTo(0,0)

So when incorporated as a link, it will look like this...

<a href="javascript:window.scrollTo(0,0);">Go to top</a>

Or as a button, it will look like this...

<button onclick="window.scrollTo(0,0);">Go to top</button>