re-render map when state change react

Laith Alayassa answered on December 27, 2022 Popularity 6/10 Helpfulness 1/10

answer re-render map when state change react

re-render map when state change react

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Tip Laith Alayassa 1 GREPCC

// Works using Slice
setWorkoutsNum((workoutsNum) => {
                let newWorkouts = workoutsNum.slice();
                newWorkouts.push(1);
                return newWorkouts;
                }

// Does NOT work without slice
setWorkoutsNum((workoutsNum) => {
			  //This makes a refereance, not a copy
                let newWorkouts = workoutsNum; 
                newWorkouts.push(1);
                return newWorkouts;
                }

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// Works using Slice

setWorkoutsNum((workoutsNum) => {

                let newWorkouts = workoutsNum.slice();

                newWorkouts.push(1);

                return newWorkouts;

// Does NOT work without slice

setWorkoutsNum((workoutsNum) => {

              //This makes a refereance, not a copy

                let newWorkouts = workoutsNum;

                newWorkouts.push(1);

                return newWorkouts;

Popularity 6/10 Helpfulness 1/10 Language javascript

Source: Grepper

Tags: javascript map state when

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Contributed on Dec 27 2022

Laith Alayassa

0 Answers Avg Quality 2/10

re-render map when state change react

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