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Create A Reducer
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| /* Create A Reducer | |
| * | |
| * You need to create a reducer called "appReducer" that accepts two arguments: | |
| * - First, an array containing information about ice cream | |
| * - Second, an object with a 'DELETE_FLAVOR' `type` key | |
| * (i.e., the object contains information to delete the flavor from the state) | |
| * | |
| * The action your reducer will receive will look like this: | |
| * { type: 'DELETE_FLAVOR', flavor: 'Vanilla' } | |
| * | |
| * And the initial state will look something like this (as such, refrain | |
| * from passing in default values for any parameters!): | |
| * [{ flavor: 'Chocolate', count: 36 }, { flavor: 'Vanilla', count: 210 }]; | |
| */ | |
| const DELETE_FLAVOR = 'DELETE_FLAVOR'; | |
| var appReducer = function(state, action){ | |
| if(action.type === DELETE_FLAVOR){ | |
| var newState = []; | |
| state.forEach(function(element){ | |
| if(element.flavor !== action.flavor){ | |
| newState.push(element); | |
| } | |
| }); | |
| return newState; | |
| } | |
| return state; | |
| } | |
| let iceCreams = [{ flavor: 'Chocolate', count: 36 }, { flavor: 'Vanilla', count: 210 }]; | |
| let action = { | |
| type:DELETE_FLAVOR, | |
| flavor:'Vanilla' | |
| }; | |
| const nS = appReducer(iceCreams,action); | |
| console.log(nS); |
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