I want to change the background color of a div at runtime using jquery. The div is showing but its background color is not changing. I don't know what's wrong with the code I wrote.
<html>
<head>
<script src="https://code.jquery.com/jquery-3.1.1.min.js"></script>
</head>
<body>
<div id="color" style="width:100px;height:100px;background-color:grey;">Hello, world!</div>
<script>
function change_color()
{
r = Math.floor(Math.random()*256);
g = Math.floor(Math.random()*256);
b = Math.floor(Math.random()*256);
rgb_ = "rgb(" + r + ", " + g + ", " + b + ")";
$("#color").css("background-color", rgb_);
}
setInterval(change_color, 1000);
</script>
</body>
</html>
I want decimal rgb value.
P粉8541192632023-09-17 20:45:11
You need to use the Math.floor function instead of floor (floor is not defined in the current code, that's why your r g b values are invalid):
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.1.1/jquery.min.js"></script>
<html>
<head>
<script src="https://code.jquery.com/jquery-3.1.1.min.js"></script>
</head>
<body>
<div id="color" style="width:100px;height:100px;background-color:grey;">Hello, world!</div>
<script>
function change_color() {
var r = Math.floor(Math.random() * 256);
var g = Math.floor(Math.random() * 256);
var b = Math.floor(Math.random() * 256);
var rgb_ = "rgb(" + r + ", " + g + ", " + b + ")";
$("#color").css("background-color", rgb_);
}
setInterval(change_color, 1000);
</script>
</body>
</html>