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How to spread state into a specific array

SAMER SAEID answered on May 11, 2022 Popularity 1/10 Helpfulness 1/10

answer How to spread state into a specific array

related How to spread state into a specific array

How to spread state into a specific array

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const DataReducer = (state, action) => {

 const { type, payload } = action; 

 switch (type) {

    case 'ADD_DATA': {

      const copy = [...state];

      copy[0] = {
        ...copy[0], 
        data: [
          ...copy[0].data, {
            id: Math.floor(Math.random() * 999),
            name: 'Bob'
          }
        ]
      };

      return copy;

    }
  }
}

const state = [{title: 'Names', data: []}, {title: 'Meal', data: []}];

const newState = DataReducer(state, { type: 'ADD_DATA', payload: { name: 'Bob' } });

console.log(newState);
 Run code snippet

Popularity 1/10 Helpfulness 1/10 Language javascript

Source: Grepper

Tags: javascript spread state

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Contributed on May 11 2022

SAMER SAEID

0 Answers Avg Quality 2/10

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How to spread state into a specific array

Comment

const DataReducer = (state, action) => {

 const { type, payload } = action; 

 switch (type) {

    case 'ADD_DATA': {

      const copy = [...state];

      copy[0] = {
        ...copy[0], 
        data: [
          ...copy[0].data, {
            id: Math.floor(Math.random() * 999),
            name: 'Bob'
          }
        ]
      };

      return copy;

    }
  }
}

const state = [{title: 'Names', data: []}, {title: 'Meal', data: []}];

const newState = DataReducer(state, { type: 'ADD_DATA', payload: { name: 'Bob' } });

console.log(newState);
 Run code snippet

Popularity 1/10 Helpfulness 1/10 Language javascript

Source: Grepper

Tags: javascript spread state

Link to this answer
Share Copy Link

Contributed on May 11 2022

SAMER SAEID

0 Answers Avg Quality 2/10

How to spread state into a specific array

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