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JavaScript JavaScript Basics (Retired) Making Decisions with Conditional Statements Using Comparison Operators

peterson st gourdain
peterson st gourdain
931 Points
Posted by peterson st gourdain
peterson st gourdain
931 Points

I can't see my mistake

what I'm I using wrong

script.js 
var a = 10;
var b = 20;
var c = 30;
var a > b;
if (alert('a is greater than b)');{
} else {
  alert('a is not greater than b')
}
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="script.js"></script>
</body>
</html>

2 Answers

Steven Parker
Steven Parker
229,787 Points
Steven Parker
Steven Parker
229,787 Points

You would not use "var a > b;" as a statement in itself, that's not valid syntax.

The expression "a > b" should be part of the "if" statement. It would go between the parentheses instead of the alert call. Then the alert should go in the code block between the braces.

The second alert is placed correctly.

Aaron Goodrum
Aaron Goodrum
9,660 Points
Aaron Goodrum
Aaron Goodrum
9,660 Points 
var a = 10;
var b = 20;
var c = 30;

if(a>b) {
  alert('a is greater than b');
} else {
  alert('a is not greater than b');
}

//you dont need to set a other var for a>b. and it is a syntax error.