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JavaScript JavaScript Basics (Retired) Working With Numbers Using Math Methods

Jorge Valerio
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Jorge Valerio
Front End Web Development Techdegree Graduate 24,696 Points
Posted by Jorge Valerio
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Jorge Valerio
Front End Web Development Techdegree Graduate 24,696 Points

Not really sure what im i doing wrong...

Im having trouble with this problem, any help is really apreciated. Thanks

var temperature = 37.5

var temperature = Math.round(temperature);

alert(temperature);

var temperature = Math.floor(temperature);

alert(temperature);

2 Answers

Jason Anello
Jason Anello
Courses Plus Student 94,610 Points

Hi Jorge,

It doesn't cause any problems to use var more than once but it's not necessary and you'll never see that done.

Your problem though is that you're changing the value of temperature. You're taking the return value of the round function and assigning it back to temperature. Now, temperature is 38 and no longer 37.5.

So, you alert the 38 but then you're stuck passing 38 into the floor function which returns back 38.

However, the challenge is expecting you to pass the original temperature into floor so that you would get 37 back.

Instead of assigning the value back to temperature you can alert the value directly like this:

var temperature = 37.5
alert(Math.round(temperature)); // This will alert 38 and temperature will still be 37.5

The alert for task 2 would be done similarly.

Jason Anello
Jason Anello
Courses Plus Student 94,610 Points

You're welcome, Jorge.

Lonnie Wibberding
Lonnie Wibberding
18,318 Points
Lonnie Wibberding
Lonnie Wibberding
18,318 Points

Once you declare the 'temperature' variable with the keyword 'var' the first time you should just use 'temperature' to refer to it after that. No need to use 'var' more than once.