Solution 1:
Review: parseInt(), var num, prompt(string, value);
Code:
<html>
<head>
<title> multiplication table</title>
</head>
<body bgcolor=red>
<script type="text/javascript">
var num;
num = prompt("Enter a number:","0"); //prompt(string,value)
num = parseInt(num); // to see if things you input a num or NaN
for(i=1; i<10; i++){
document.write(i+"*"+num+"="+i*num+"<br><br>");
}
</script>
</body>
</html>
Solution 2:
Codepen: Check here I don't quite get this
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