how to make a name based greeting alert in html form? [duplicate]

Question

enter image description here

I want when I click the submit button, a pop up name-based greeting alert appears.

(sorry for my bad English)

Answer 1

Kind of like this maybe?

HTML element:

 <button onclick="myFunction()">Click me</button> 

in your js file:

function myFunction() {
     alert("Hello my name is..")
}