rotate with quaternion unity code example

Example 1: unity rotation to quaternion

using UnityEngine;public class Example : MonoBehaviour
{
    void Start()
    {
        // A rotation 30 degrees around the y-axis
        Quaternion rotation = Quaternion.Euler(0, 30, 0);
    }
}

Example 2: how to change rotate with script unity

var rotationVector = transform.rotation.eulerAngles;
rotationVector.z = 0;  //this number is the degree of rotation around Z Axis
transform.rotation = Quaternion.Euler(rotationVector);
//if you put this in a coroutine and yielding for some amount of time 
//you can have something like a rotating loading icon

Example 3: unity rotate quaternion around axis

RoatationVar = Quaternion.Euler(Vector3.up) * camera.rotation;