change color by java scribt
<!DOCTYPE html>
<html>
<head>
<script>
function display()
{
var col=document.getElementById("demo");
col.style.color="#FF0000";
}
</script>
</head>
<body>
<h1>My First JavaScript</h1>
<p id="demo">click on the button below.....</p>
<button onclick="display()">Display</button>
</body>
</html><!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>Change the Background Color with JavaScript</title>
<script>
// Function to change webpage background color
function changeBodyBg(color){
document.body.style.background = color;
}
// Function to change heading background color
function changeHeadingBg(color){
document.getElementById("heading").style.background = color;
}
</script>
</head>
<body>
<h1 id="heading">This is a heading</h1>
<p>This is a paragraph of text.</p>
<hr>
<div>
<label>Change Webpage Background To:</label>
<button type="button" onclick="changeBodyBg('yellow');">Yellow</button>
<button type="button" onclick="changeBodyBg('lime');">Lime</button>
<button type="button" onclick="changeBodyBg('orange');">Orange</button>
</div>
<br>
<div>
<label>Change Heading Background To:</label>
<button type="button" onclick="changeHeadingBg('red');">Red</button>
<button type="button" onclick="changeHeadingBg('green');">Green</button>
<button type="button" onclick="changeHeadingBg('blue');">Blue</button>
</div>
</body>
</html>