Using <form> and <input> elements as an input for JavaScript code. Is this the best way to do this?

Question

Folks, I am newbie to coding, obviously, so having completed few Lynda courses recently on HTML and Javascript, I have hit a wall with my simple HTML page. Basically, what I wan

Answer 1

Use solution from singe31, but to prevent reloading of the page after click change type of your button from "submit" to "button" or place "return false;" as the last line of calculateError() function. Otherwise you won't see any change on the page.