ERROR TypeError: co.Number is not a function

Question

I am trying to multiply two strings with Angular.

<h5>{{Number(someString) * Number(someOtherString)}}</h5>

but I am getting this error:

ERROR TypeError: co.Number is not a function

How can I multiply two strings with Angular in the HTML?

Edit:

gsc pointed out that I can simply multiply the strings together.

{{'4'*'3'}}

12

However, be careful

{{'4'+'3'}}

43

Answer 1

Inside a component template, you don’t have access to global JavaScript objects (like Number, window). You can only use properties and functions from your component class (and Angular stuff, like pipes). Finally, you don’t need to invoke Number constructor to convert your string to number, because JavaScript will do it for you.