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JavaScript JavaScript Foundations Numbers Parsing Numbers From Strings

Posted by Hiromi De Young
Hiromi De Young
2,671 Points

parseInt

This is the question I had: "A variable named "boxWidth" already exists with a value of "640px". Create a new variable named "numWidth" and use the "parseInt" method to extract the numeric value from boxWidth's string value.", and my answer was,

var numWidth = parseInt("640px", 10);

Can you tell me what I did wrong?

3 Answers

Dino Paškvan
Dino Paškvan
Courses Plus Student 44,107 Points

Just read the task again: ... variable named "boxWidth" already exists with a value of "640px"...

So, you should be parsing the value stored in the variable (by passing the variable as the first argument), not a string literal.

Hiromi De Young
Hiromi De Young
2,671 Points
Hiromi De Young
Hiromi De Young
2,671 Points

Okay. I got it! Thank you :)