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JavaScript

Garrett Miller
Garrett Miller
4,975 Points
Posted by Garrett Miller
Garrett Miller
4,975 Points

Did not parsefloat or parseInt my prompt and still allowed me to multiply the string.

Wrote it on the fly and there are no errors. Is anyone able to explain why I can multiply a string here?

const endNum = prompt('please enter a number.');

let main = document.querySelector('main');

main.innerHTML = Math.floor(Math.random() * endNum) +1;

//check type console.log(typeof endNum); console.log(typeof (Math.random() * endNum));

1 Answer

Steven Parker
Steven Parker
231,261 Points
Steven Parker
Steven Parker
231,261 Points

JavaScript has a mechanism known as type coercion that implicitly converts values from one data type to another when needed to satisfy the requirements of an operator.

For more details, see the MDN page on Type Coercion.