Comments (3)
I believe your issue is that your calling 'frame' and 'block' before they are defined. Also, your script tag should be in the body before the closing body tag. Try the code below:
index.html
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width">
<title>repl.it</title>
<link href="index.css" rel="stylesheet" type="text/css" />
</head>
<body>
<div id="frame">
<div id="block"></div>
</div>
<script>
const moveBlock = () => {
const xBlock = parseFloat(getComputedStyle(blockElement).left)
const xMax = parseFloat(getComputedStyle(frame).width)
if (xBlock + blockWidth <= xMax) {
blockElement.style.left = (xBlock + movement) + 'px'
animationId = requestAnimationFrame(moveBlock)
} else {
cancelAnimationFrame(animationId)
}
}
const frameElement = document.getElementById("frame")
const blockElement = document.getElementById("block")
const blockWidth = parseFloat(getComputedStyle(blockElement).width)
const movement = 7
let animation = requestAnimationFrame(moveBlock)
</script>
</body>
</html>
index.css
#frame {
border: 1px solid red;
}
#block {
width: 20px;
height: 40px;
background: red;
position: relative;
}
from thejsway.
thanks @mtrivera
from thejsway.
No problem. You might want to close this issue.
from thejsway.
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