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Paul Suszynski
756 PointsWhy does this code run fine in codepen but not in a browser?
When I run this in Firefox or Chrome I get an error: Uncaught TypeError: main is null. but when I run the code in codepen it runs fine. https://codepen.io/paulzoom/pen/RwpGONj
<head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /> <title>Untitled Document</title> </head>
<body> <script>
const main = document.querySelector("main"); const randomNumber = getRandomNumber(10); let guess; let attempts = 0; function getRandomNumber(upper) { return Math.floor(Math.random() * upper) + 1; } do { guess = prompt("Guess a number betwee 1 and 10."); attempts++; if (parseInt(guess) === randomNumber){ break; }
} while ( attempts < 10 );
main.innerHTML = <h1>It took you ${attempts} tries to guess ${randomNumber}.</h1>;
</script>
<main></main> </body> </html>