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JavaScript JavaScript Numbers Working with Numbers Numbers and Strings

Posted by theteamtreehouse
theteamtreehouse
3,472 Points

Why this is wrong?

script.js 
const width = '190px';
const totalImages = 10;

var totalWidth = +width * totalImages;

1 Answer

Adam N
Adam N
70,280 Points

The unary operator (+) tries to convert the entire string to an integer. '190px' becomes NaN because JS can't convert the letters into an number. In this case, you have to use a different way to convert the width variable.

Let me know if this helps!