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JavaScript JavaScript Foundations Numbers Parsing Numbers From Strings

Posted by Polo Moreno
Polo Moreno
11,782 Points

what is the answe correct in this challenge

i don't understand ¡¡

this challenge say this

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.

my answer is this

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

but the system say this

Sorry! That's not correct. A correct answer will use the form: var numVariable = parseInt(stringVariable, radix);

what is the radix number correct or who is the string correct

index.html 
<!DOCTYPE html>
<html lang="en">
  <head>
    <title>JavaScript Foundations: Parsing Numbers From Strings</title>
    <link rel="stylesheet" href="core.css">
    <script>
      var boxWidth = "640px";
      var boxHeight = "480px";



    </script>
  </head>
  <body>
    <h1>JavaScript Foundations</h1>
    <h2>Parsing Numbers From Strings</h2>
    <script src="viewer.js"></script>
  </body>
</html>

1 Answer

Alex Heil
Alex Heil
53,547 Points
Alex Heil
Alex Heil
53,547 Points

hey Josue Polo , you're basically hitting an error here because you added static values (640) to the parseInt method instead of using the available variable.

try it like this: 

var numWidth = parseInt(boxWidth, 10);

hope that helps and have a nice day ;)

Polo Moreno
Polo Moreno
11,782 Points

thanks for your help friend (Y)