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JavaScript JavaScript Numbers Working with Numbers Numbers and Strings

Posted by Xun Huang
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Xun Huang
Web Development Techdegree Graduate 18,515 Points

Can I also use unary"+" in this challenge?

script.js 
const width = '190px';
const totalImages = 10;
const totalWidth = parseInt(width) * parseInt(totalImages);

1 Answer

Tim Danner
Tim Danner
3,284 Points

I don't think so, while the unary operators could convert non-numeric values into numbers, it doesn't convert a string consisting of characters.

Your codes run perfectly fine, but there is a slight problem here, there's no need to call parseInt() on totalImages when it's already of type integer:

const width = '190px';
const totalImages = 10;
// const totalWidth = parseInt(width) * parseInt(totalImages);
const totalWidth = parseInt(width) * totalImages;