JavaScript/elements by class.html at main · kishan80090/JavaScript · GitHub

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<!DOCTYPE html>

<html>
<head>
<meta charset="UTF-8">
<title>Class Name</title>
<style>
.blue
{
background-color: blue;

}
.green
{
background-color: green;

}
</style>
<script>
function traverse()
{

var textboxes=document.getElementsByClassName("blue");
var n=textboxes.length;
for(var i=0;i<=n-1;i++)
{
textboxes[i].value="Blue";


}
textboxes=document.getElementsByClassName("green");
var n=textboxes.length;
for(var i=0;i<=n-1;i++)
{
textboxes[i].value="Green";


}
}
</script>
</head>
<body>
A<input type="text" class="blue"/>
<br/>
B<input type="text" class="green"/>
<br/>
C<input type="text" class="blue"/>
<br/>
D<input type="text" class="green"/>
<br/>
E<input type="text" class="blue"/>
<br/>
F<input type="text" class="blue"/>
<br/>
<input type="button" onclick="traverse()" value="Traverse"/>
</body>
</html>