|
| 1 | +function checkActionType(action) { |
| 2 | + switch(action.type){ |
| 3 | + case(`INITIALIZE`): |
| 4 | + return {initialized: true}; |
| 5 | + case(`INCREMENT`): |
| 6 | + return {salary: `+500$`}; |
| 7 | + case(`DECREMENT`): |
| 8 | + return {salary: `-500$`}; |
| 9 | + } |
| 10 | +} |
| 11 | + |
| 12 | +console.log(checkActionType({type: `INITIALIZE`})); |
| 13 | +console.log(checkActionType({type: `INCREMENT`})); |
| 14 | +console.log(checkActionType({type: `DECREMENT`})); |
| 15 | + |
| 16 | +// TASK 1 |
| 17 | + |
| 18 | +function sumArguments() { |
| 19 | + const argumentsTheFunc = [...arguments]; |
| 20 | + const sum = argumentsTheFunc.reduce(function(newValue, value) { |
| 21 | + return newValue + value; |
| 22 | + }, 0) |
| 23 | + return sum; |
| 24 | +} |
| 25 | + |
| 26 | +function sumArguments2() { |
| 27 | + let zero = 0; |
| 28 | + for(let i = 0; i < arguments.length; i++) { |
| 29 | + zero += arguments[i]; |
| 30 | + } |
| 31 | + return zero; |
| 32 | +} |
| 33 | +console.log(sumArguments2(12, 13, 14)); |
| 34 | + |
| 35 | +console.log(sumArguments(10, 12, 12, 12, 12, 23, 23, 44)); |
| 36 | +console.log(sumArguments(10, 12)); |
| 37 | + |
| 38 | +console.log(sumArguments(10, 12, 12, 12, 12, 23, 23, 44, 12, 32, 43, 32)); |
| 39 | + |
| 40 | +// TASK 2 |
| 41 | + |
| 42 | +const user = { |
| 43 | + id: 10, |
| 44 | + city: `Tailand`, |
| 45 | + email: `example@example.com`, |
| 46 | + cars: { |
| 47 | + id: 20, |
| 48 | + names: [`bmw`, `VAZ`, `mercedes`, `AUDI`], |
| 49 | + venders: { |
| 50 | + id: 30, |
| 51 | + adreses: [`google`, `yahoo`], |
| 52 | + } |
| 53 | + }, |
| 54 | +}; |
| 55 | + |
| 56 | +function copyObject(obj) { |
| 57 | +// for(let key in obj) { |
| 58 | +// newObj[key] = obj[key]; |
| 59 | +// } |
| 60 | +// newObj.city = `Kharkiv`; |
| 61 | + /* version 1 */ |
| 62 | +// return Object.assign({}, obj, {cars: [...obj.cars]}); |
| 63 | + /* version 2 */ |
| 64 | + const newObj = { |
| 65 | + ...obj, |
| 66 | + cars:{ |
| 67 | + ...obj.cars, |
| 68 | + names: [...obj.cars.names], |
| 69 | + venders: { |
| 70 | + ...obj.cars.venders, |
| 71 | + adreses: [...obj.cars.venders.adreses], |
| 72 | + }}, |
| 73 | + }; |
| 74 | + return newObj; |
| 75 | +} |
| 76 | + |
| 77 | +const newUser = copyObject(user); |
| 78 | +newUser.cars.names.push(`Juguli`); |
| 79 | +newUser.cars.venders.adreses.push(`mAIL.rU`); |
| 80 | +console.log(newUser); |
| 81 | +console.log(user); |
| 82 | + |
| 83 | +console.log(sumArguments(10, 12, 12, 12, 12, 23, 23, 44, 12, 32, 43, 32)); |
| 84 | + |
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