/Javascript/React/React redux how to change object value in reducer

React redux how to change object value in reducer

Update State in react redux reducer

case foodConstants.FOOD_SUCCESS_POST: {

  let updatedItems = { ...state.items };
  const itemIndex = updatedItems.findIndex((food1) => food1.id === action.id);

  if(itemIndex > -1){
    updatedItems[itemIndex] = {
        ...updatedItems[itemIndex],
        ...action,
    }
  }

 return { ...state, items: updatedItems };
}

Source: stackoverflow.com

Update State in react redux reducer

case foodConstants.FOOD_SUCCESS_POST: {

  const updatedItems = state.items.map((food1) => {
    if (food1.id === action.id) {
      return { ...action };
    }

    return food1;
  });
 return { ...state, items: updatedItems };
}

Source: stackoverflow.com

React redux how to change object value in reducer

  if (action.type == types.FILTER_TITLE_CHANGED) {
    let newState = { ...state };
    newState.filterTitleStr = action.filterTitleStr;
    return newState;
  } else if (action.type == types.FILTER_AUTHOR_CHANGED) {
    let newState = { ...state };
    newState.filterAuthorStr = action.filterAuthorStr;
    return newState;
  } else if (action.type == types.FILTER_CATEGORY_CHANGED) {
    let newState = { ...state };
    newState.filterCategoryStr = action.filterCategoryStr;
    return newState;
  }

Similar codes

0 vote232 views1 answer
How to disable RectButton from react-native-gesture-handler
Javascript React
0 vote201 views1 answer
React testing library getBy image
Javascript React
0 vote273 views2 answers
Combine p5 with react
Javascript React
0 vote234 views1 answer
Truncate function react
Javascript React
2 votes218 views2 answers
Vscode extensions for better react js
Javascript React
0 vote199 views1 answer
Import React from 'react'; import {Router, Scene} from 'react-native-router-flux';
Javascript React
1 vote232 views1 answer
React variable in stirng
Javascript React
0 vote329 views1 answer
How to prevent clickjacking in react js
Javascript React
1 vote220 views1 answer
How to position View absolute react native
Javascript React
0 vote253 views1 answer
Corousal in react
Javascript React