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helderberto revised this gist
Jul 19, 2024 . 1 changed file with 3 additions and 4 deletions.There are no files selected for viewing
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters. Learn more about bidirectional Unicode charactersOriginal file line number Diff line number Diff line change @@ -6,7 +6,7 @@ console.log('Hello, world!'); function sumFunc(arr) { // YOUR CODE HERE let accumulator = 0; for (let i = 0; i < arr.length; i++) { accumulator += arr[i]; } return accumulator; @@ -24,7 +24,6 @@ function returnIterator(arr) { index++; return value; } } // Uncomment the lines below to test your work @@ -41,7 +40,7 @@ console.log(myIterator()); // -> should log 'd' function nextIterator(arr) { // YOUR CODE HERE let index = 0; const iterator = { next: function () { const value = arr[index]; @@ -73,7 +72,7 @@ function sumArray(arr) { accumulator += next; next = iterator.next(); } return accumulator } // Uncomment the lines below to test your work -
aegorenkov created this gist
Jul 26, 2018 .There are no files selected for viewing
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters. Learn more about bidirectional Unicode charactersOriginal file line number Diff line number Diff line change @@ -0,0 +1,178 @@ // Type JavaScript here and click "Run Code" or press Ctrl + s console.log('Hello, world!'); // CHALLENGE 1 function sumFunc(arr) { // YOUR CODE HERE let accumulator = 0; for (let i = 0; i < arr.length; i++) { accumulator += arr[i]; } return accumulator; } // Uncomment the lines below to test your work const array = [1, 2, 3, 4]; console.log('Challenge 1A', sumFunc(array)); // -> should log 10 function returnIterator(arr) { // YOUR CODE HERE let index = 0; return function() { const value = arr[index]; index++; return value; } } // Uncomment the lines below to test your work const array2 = ['a', 'b', 'c', 'd']; const myIterator = returnIterator(array2); console.log('Challenge 1B', myIterator()); // -> should log 'a' console.log(myIterator()); // -> should log 'b' console.log(myIterator()); // -> should log 'c' console.log(myIterator()); // -> should log 'd' // CHALLENGE 2 function nextIterator(arr) { // YOUR CODE HERE let index = 0; const iterator = { next: function () { const value = arr[index]; index++; return value; } } return iterator; } // Uncomment the lines below to test your work const array3 = [1, 2, 3]; const iteratorWithNext = nextIterator(array3); console.log('Challenge 2', iteratorWithNext.next()); // -> should log 1 console.log(iteratorWithNext.next()); // -> should log 2 console.log(iteratorWithNext.next()); // -> should log 3 // CHALLENGE 3 function sumArray(arr) { // YOUR CODE HERE // use your nextIterator function let accumulator = 0; let iterator = nextIterator(arr); let next = iterator.next(); while(next) { accumulator += next; next = iterator.next(); } return accumulator } // Uncomment the lines below to test your work const array4 = [1, 2, 3, 4]; console.log('Challenge 3', sumArray(array4)); // -> should log 10 // CHALLENGE 4 function setIterator(set) { // YOUR CODE HERE let setIterator = set.values(); const iterator = { next: function () { var next = setIterator.next(); return next['value']; } } return iterator; } // Uncomment the lines below to test your work const mySet = new Set('hey'); const iterateSet = setIterator(mySet); console.log('Challenge 4', iterateSet.next()); // -> should log 'h' console.log(iterateSet.next()); // -> should log 'e' console.log(iterateSet.next()); // -> should log 'y' // CHALLENGE 5 function indexIterator(arr) { // YOUR CODE HERE let index = 0; const iterator = { next: function () { const value = arr[index]; index++; return [index - 1, value]; } } return iterator; } // Uncomment the lines below to test your work const array5 = ['a', 'b', 'c', 'd']; const iteratorWithIndex = indexIterator(array5); console.log('Challenge 5', iteratorWithIndex.next()); // -> should log [0, 'a'] console.log(iteratorWithIndex.next()); // -> should log [1, 'b'] console.log(iteratorWithIndex.next()); // -> should log [2, 'c'] // CHALLENGE 6 function Words(string) { this.str = string; } Words.prototype[Symbol.iterator] = function() { // YOUR CODE HERE let index = 0; const splitStr = this.str.split(/\s/); return { next: function () { if (index < splitStr.length) { const value = splitStr[index]; index ++; return {value: value, done: false}; } else { return { done: true }; } } } } // Uncomment the lines below to test your work const helloWorld = new Words('Hello World'); for (let word of helloWorld) { console.log('Challenge 6', word); } // -> should log 'Hello' and 'World' // CHALLENGE 7 function valueAndPrevIndex(array){ let index = 0; return { sentence: function() { index++; let indexName = index; if (index - 1 === 0) { indexName = "first"; } return "" + array[index - 1] + " was found after index " + indexName; } } } const returnedSentence = valueAndPrevIndex([4,5,6]) console.log(returnedSentence.sentence()); console.log(returnedSentence.sentence()); console.log(returnedSentence.sentence()); This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters. Learn more about bidirectional Unicode charactersOriginal file line number Diff line number Diff line change @@ -0,0 +1,109 @@ // Challenge 1 function sayHello() { function printHello() { console.log('Challenge 1, 5', 'Hello'); } setTimeout(printHello, 1000); } // Uncomment the line below when ready sayHello(); // should log "Hello" after 1000ms // Challenge 2 let promise = new Promise(function (resolve, reject) { // ADD CODE HERE setTimeout(resolve, 1000); }); // Should print out "Resolved!" // ADD CODE HERE function displayResolve() { console.log('Challenge 2', 'Resolved!'); } promise.then(displayResolve); // Challenge 3 promise = new Promise(function(resolve, reject) { // ADD CODE HERE reject(); }) // Should print out "Reject!" // ADD CODE HERE function displayRejected() { console.log('Challenge 3', 'Rejected!'); } promise.catch(displayRejected); // Challenge 4 promise = new Promise(function (resolve, reject) { // ADD CODE HERE resolve(); }); // Uncomment the lines below when ready promise.then(function () { console.log('Challenge 4', 'Promise has been resolved!') }); console.log('Challenge 4', "I'm not the promise!"); // Challenge 5 function delay(){ return new Promise(function (resolve, reject) { setTimeout(resolve, 1000); }); } // Uncomment the code below to test // This code should log "Hello" after 1000ms delay().then(sayHello); // Challenge 6 // // ADD CODE BELOW const secondPromise = new Promise(function (resolve, reject) { resolve('Second!'); }); const firstPromise = new Promise(function (resolve, reject) { resolve(secondPromise); }) firstPromise.then((value) => console.log('Challenge 6', value)); // Challenge 7 const fakePeople = [ { name: 'Rudolph', hasPets: false, currentTemp: 98.6 }, { name: 'Zebulon', hasPets: true, currentTemp: 22.6 }, { name: 'Harold', hasPets: true, currentTemp: 98.3 }, ] const fakeAPICall = (i) => { const returnTime = Math.floor(Math.random() * 1000); return new Promise((resolve, reject) => { if (i >= 0 && i < fakePeople.length) { setTimeout(() => resolve(fakePeople[i]), returnTime); } else { reject({ message: "index out of range" }); } }); }; function getAllData() { // CODE GOES HERE const apiPromises = [fakeAPICall(0), fakeAPICall(1), fakeAPICall(2)] return Promise.all(apiPromises) .then(function(values) { return values; }); } getAllData().then((values) => console.log('Challenge 7', values));