javascript implements the method of displaying loading after clicking the submit button

This article illustrates javascript's method of displaying loading after clicking the submit button. Share to everybody for everybody reference. The details are as follows:

Here, loading can be displayed after clicking the submit button to prevent users from repeatedly submitting

<style>
#loading { 
  position:absolute; 
  width:500px; 
  height:50px; 
  top:50%;
  left:50%; 
  margin: -25px -150px;
  background-color:#FFFFFF;
  border:1px solid #CCCCCC;
  text-align:center;
  padding:20px;
}
</style>
<div id="loading" style="display:none">
<img src="image/ajax.gif" /> Loading...
</div>
<a href="#" onclick="document.getElementById('loading').style.display='';">test</a>

Hopefully, this article has been helpful in your javascript programming.