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

sean farrelly
sean farrelly
1,614 Points

add a conditional statement that test if the value in variable a is greater than the variable b. if it is a pop up alert

add a conditional statement that test if the value in variable a is greater than the variable b. if it is a pop up alert with message a is greater than b also add an else clause that pops up the message a is not greater than b

script.js
var a = 10;
var b = 20;
var c = 30;
if (" answer === " var a" > " var b ") {
     windows.alert ("var a is greater than var b") ;
} else { 
  windows.alert ( " var a is not greater than var 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

james south
seal-mask
.a{fill-rule:evenodd;}techdegree seal-36
james south
Front End Web Development Techdegree Graduate 33,258 Points

once a variable is declared with the var keyword, you don't need to use var anymore. subsequent uses of the variable are made by just using its name. also your quotes are haphazard, that's why your formatted text is so discolored. you only need quotes for strings, not to make conditional statements in general.

Hey Sean,

You already have your variables declared. So there's no need to redeclare them anywhere with the keyword var. Simply use a and b inside of your if statement.

var a = 10;
var b = 20;
var c = 30;

if ( a > b ) { // If a is greater than b

} else { // If a is not greater than b

}

The final step to the challenge is to write your alert dialogues, which will use the alert function. Which looks like this:

alert('This is an example');

Your final program should look like this:

var a = 10;
var b = 20;
var c = 30;

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