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

Posted by Qasim Rashad
.a{fill-rule:evenodd;}techdegree
Qasim Rashad
Front End Web Development Techdegree Student 7,837 Points

I need help with an question

It saying its an error but can't spot the error. Did I do it correctly?

script.js 
var a = 10;
var b = 20;
var c = 30;
if { a > b};
else { "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>

3 Answers

Ben Reynolds
Ben Reynolds
35,170 Points
Ben Reynolds
Ben Reynolds
35,170 Points

The if/else syntax should look like this:

if (Condition To Test Goes Here) {
     // this code will run if condition is true
} else {
     // this code will run if condition is false
}

The commented parts of my example above are where you'll write the code for the alerts.

Qasim Rashad
.a{fill-rule:evenodd;}techdegree
Qasim Rashad
Front End Web Development Techdegree Student 7,837 Points

I’ve put,

if (a > b) {

Alert (“a is greater than b”)} Else { alert (“a is not greater than b”)}

It popped as error, did I do something incorrectly?

Agnes Demes
Agnes Demes
6,613 Points
Agnes Demes
Agnes Demes
6,613 Points

Hi there, When you use conditional .s the syntax is very important. If (condition) - using brackets around condition { code to be executed } - using curly braces around code to be executed else no condition needed as when IF statement is false this code will execute inside the curly brace{ code to be executed}

var x = 10;
var y = 20;
var z = 30;
if (x>y) {          
  alert("write something here");
} else {         
  alert("write something here");
}
Qasim Rashad
.a{fill-rule:evenodd;}techdegree
Qasim Rashad
Front End Web Development Techdegree Student 7,837 Points

I figured it out thank you so much for the help!

Agnes Demes
Agnes Demes
6,613 Points
Agnes Demes
Agnes Demes
6,613 Points

You are almost there, only you dont need the brackets after the else condition as when the if condition is false the else condition will execute so there are only 2 possible outcomes. The quiz questions are very specific and strict. For instance when i was competing this challenge I typed "then" instead of "than" and it came back with an error. dont forget the ; semicolon after the else statement.