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JavaScript JavaScript Loops, Arrays and Objects Tracking Multiple Items with Arrays Iterating through an Array

Joseph Spirito
Joseph Spirito
11,007 Points
Posted by Joseph Spirito
Joseph Spirito
11,007 Points

Unexpected Token?

I am trying to log the array with a loop. What I'm lost on is why the "<" is an "unexpected token".

script.js 
var temperatures = [100,90,99,80,70,65,30,10];
for (var i = 0, i < temperatures.length, i += 1) {
  var weather = temperatures.shift();
  console.log(weather);
}
index.html 
<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <title>JavaScript Loops</title>
</head>
<body>
<script src="script.js"></script>
</body>
</html>

1 Answer

Michael Hulet
Michael Hulet
47,912 Points
Michael Hulet
Michael Hulet
47,912 Points

The proper separator inside a for loop is a semicolon (;), not a comma (,). There are a few scenarios when JavaScript could interpret a stray comma as valid, but in no scenario will there be a comparison afterward, so the first place where the interpreter realizes something is wrong is when it sees a comparison operator, so that's why it's telling you that's the out-of-place token. If you change the commas (,) in your for loop to semicolons (;), your code should run just fine