The JS implementation changes the background when clicking the a TAB

2020-03-26 21:23:33
OfStack

 
<html> 
<head> 
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> 
<title></title> 
<script type=text/javascript src="alabel.js"></script> 
<style type="text/css"> 
.curr{background:blue;display:inline;} 
</style> 

</head> 
<body> 
<div class="clMenu"> 
<span><a href="#">1</a></span> 
</div> 

</body> 
</html>

In alabel. In js:

 
window.onload = function () 
{ 
var aspan = document.getElementsByTagName("span"); 
var i = 0; 
for (i = 0; i < aspan.length; i++) 
{ 
aspan[i].onclick = function () 
{ 
for (i = 0; i < aspan.length; i++) aspan[i].className = ""; 
this.className = "curr"; 
}; 
} 
};

This allows you to add a red background to the a TAB when you click on it.

Note: display cannot be a block in the curr property, otherwise the background added is a whole line.