How do you automatically set text box to Uppercase?

Question

I am using the following style attribute to set the user input to uppercase so that when the user starts typing in the text box for example railway, then it should

Answer 1

This will both show the input in uppercase and send the input data through post in uppercase.

HTML

JavaScript

var someInput = document.querySelector('#someInput');
someInput.addEventListener('input', function () {
    someInput.value = someInput.value.toUpperCase();
});