ZilaStar ICT
Jul 15 2022, 11:51:48
Category : JavaScript Tutorials
getElementsByClassName (HTML DOM Document)
<!DOCTYPE html>
<html>
<head>
<title>JS Code Testing</title>
<style>
.Example{
border: 2px solid yellow;
padding: 5px;
width: 100px;
}
</style>
</head>
<body>
<div class = "Example">
Example_1
</div>
<div class = "Example">
Example_2
</div>
<div class = "Example">
Example_3
</div><br />
<button style = "background: red" onclick = "colRed()">Red</button>
<button style = "background: green" onclick = "colYellow()">Green</button>
<script>
function colRed(){
var i;
var x = document.getElementsByClassName("Example");
for(i = 0; i < x.length; i++){
x[i].style.backgroundColor = "red";
x[i].style.color = "white";
}
}
function colYellow(){
var i;
var x = document.getElementsByClassName("Example");
for(i = 0; i < x.length; i++){
x[i].style.backgroundColor = "green";
x[i].style.color = "yellow";
}
}
</script>
</body>
</html>
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