问setter方法是否在React中触发DOM重选器？

EN

import React, { useContext } from "react"
import { FontAwesomeIcon } from "@fortawesome/react-fontawesome"

// Styling
import style from "../styles/Calendar.css"

// Assets
import { faArrowLeft } from "@fortawesome/free-solid-svg-icons"
import { faArrowRight } from "@fortawesome/free-solid-svg-icons"

// Contexts
import { DateContext } from "./context/DateContext.js"

const Calendar = () =>  {
    const [dateObj, setDateObj] = useContext(DateContext)
    const monthArray = ["January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December"];

    const incrementMonth = () => {
        setDateObj(prevDate => {
            let newDate = prevDate
            newDate.setMonth(prevDate.getMonth() + 1)
            return newDate
        })
    }
    
    const decrementMonth = () => {
        setDateObj(prevDate => {
            let newDate = prevDate
            newDate.setMonth(prevDate.getMonth() - 1)
            return newDate
        })
    }
    
    return(
        <div style={style} className="CalendarWrapper">
            <div className="MonthSelector">
                <FontAwesomeIcon icon={faArrowLeft} onClick={decrementMonth} className="hoverArrow"/>
                <p>{ `${ monthArray[dateObj.getMonth()] } ${ dateObj.getFullYear() }` }</p>
                <FontAwesomeIcon icon={faArrowRight} onClick={incrementMonth} className="hoverArrow"/>
            </div>
        </div>
    )
}

export default Calendar

import React, { useState, createContext } from "react"

export const DateContext = createContext(null)

export const DateProvider = props => {
    const [dateObj, setDateObj] = useState(new Date())
    return(
        <DateContext.Provider value={[dateObj, setDateObj]}>
            {props.children}
        </DateContext.Provider>
    )
}