Check out example codes for "unity docs player input". It will help you in understanding the concepts better.
Code Example 1
using UnityEngine;
using System.Collections;public class ExampleClass : MonoBehaviour
{
public void Update()
{
if (Input.GetButtonDown("Fire1"))
{
Debug.Log(Input.mousePosition);
}
}
}
Learn ReactJs, React Native from akashmittal.com