Slider.normalizedValue

Description

The current value of the slider normalized into a value between 0 and 1.

using UnityEngine;
using System.Collections;
using UnityEngine.UI; // Required when Using UI elements.

public class Example : MonoBehaviour
{
    public Slider mainSlider;

    //Set to invoke when "OnValueChanged" method is called.
    void CheckNormalisedValue()
    {
        //Displays the normalised value of the slider everytime the value changes.
        Debug.Log(mainSlider.normalizedValue);
    }
}