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JavaScript JavaScript Basics (Retired) Storing and Tracking Information with Variables Using String Methods

how can i use '.toUpperCase()' method on the 'id'?

help me please

app.js
var id = "23188xtr";
var lastName = "Smith";
var userName = ("id.toUpperCase()");
index.html
<!DOCTYPE HTML>
<html>
<head>
  <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
  <title>JavaScript Basics</title>
</head>
<body>
<script src="app.js"></script>
</body>
</html>

1 Answer

Steven Parker
Steven Parker
220,937 Points

Don't put quotes around variable names or expressions containing them, that converts the whole thing into a string. You also don't need the outer parentheses.