Refactor HelloWorld component

Author: gscarv13

app/javascript/bundles/HelloWorld/HelloWorld.re

@@ -0,0 +1,17 @@
+@react.component
+let make = (~nameProp: string) => {
+ let (name, setName) = React.useState(() => nameProp)
+
+ <div>
+ <h3> {("Hello, " ++ name ++ "!") -> React.string} </h3>
+ <form>
+ <label htmlFor="name"> {"Say hello to:" -> React.string} </label>
+ <input
+ id="name"
+ type_="text"
+ value=name
+ onChange={event => setName(event -> Utils.eventTargetValue)}
+ />
+ </form>
+ </div>
+}