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JavaScript JavaScript Basics (Retired) Making Decisions with Conditional Statements Super Conditional Challenge

Mostafa Kateb Nejad
Mostafa Kateb Nejad
927 Points
Posted by Mostafa Kateb Nejad
Mostafa Kateb Nejad
927 Points

code error

why does this code executes the first line of if statement

script.js 
var money = 9;
var today = 'Friday'

if ( money >= 100 || today === 'Friday' ) {
  alert("Time to go to the theater");    
} else if ( money >= 50 || today === 'Friday' ) {
  alert("Time for a movie and dinner");    
} else if ( money > 10 || today === 'Friday' ) {
  alert("Time for a movie");   
} else if ( today !== 'Friday' ) {
  alert("It's Friday, but I don't have enough money to go out");   
} else {
  alert("This isn't Friday. I need to stay home.");
}
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

Dan Whiting
Dan Whiting
12,661 Points
Dan Whiting
Dan Whiting
12,661 Points

If you're asking why the code only first line of your "if/else if/else" statement, it is because "today === 'Friday'" will always be true. Once the program finds a a true statement, it will stop running. So as long as the var today is set to 'Friday', the code will always stop at the first "if" statement.

Jacob Mishkin
Jacob Mishkin
23,118 Points
Jacob Mishkin
Jacob Mishkin
23,118 Points

It's because of the or || operator. The first line is money greater than $100, which is false, but with the || or operator today does equal Friday. Either or conditions can be true in order for the statement to be considered true. that is the difference between and && and or || operators.