London Class 10 - Andrius Isin - JS1 - Week 4 #232
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| let longNameThatStartsWithA = names.find(getlongNameThatStartsWithA); | ||
| // let longNameThatStartsWithA = names.find((element) => { | ||
| // return element.length > 7 && element.startsWith("A"); | ||
| // }); | ||
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I really like the "startsWith" method you used. Nice! but can you think of another way of checking the second condition without using any method?
| let student = students[indexes[0]]; | ||
| let mentor = mentors[indexes[1]]; | ||
| return [student, mentor]; | ||
| if (indexes !== null) { |
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Your condition works fine, so well done for that! but the aim of this exercise is using some() method on pairsByIndex array. Could you think of using some() instead of line 19.
| console.log("Fizz"); | ||
| } else if (number % 5 === 0) { | ||
| console.log("Buzz"); | ||
| } else { |
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Please read the instruction again, Andrius. There are 3 conditions. You have successfully done first and second condetions but could you add the last condition as well and print "FizzBuzz" when needed.
Also, it's a good practice if in the future you could use ternary operator instead of if else chaining.
| let arr = str.split(""); | ||
| arr[0] = arr[0].toUpperCase(); | ||
| return arr.join(""); | ||
| } | ||
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| .replace(/day/g, "night") | ||
| .replace(/great/g, "brilliant") | ||
| .replace(/10/g, "100000"); | ||
| console.log(result); |
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Is there any specific reason that you used regular expression?
| @@ -33,7 +38,8 @@ Write a function that: | |||
| - Returns a new array containing the same elements, but without the element at the passed index. | |||
| */ | |||
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| function remove() { | |||
| function remove(array, index) { | |||
| return array.filter((element, i) => i !== index); | |||
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This could pass your tests but it isn't very efficient. Imagine if you have a lenghthy array, looping through isn't efficient here. I recommend using methods like slice and concat
| number = 100; | ||
| } | ||
| return `${Math.round(number * 100) / 100}%`; | ||
| }); |
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This function doesn't pass the test and returns undefined.
| function formatPercentage() { | ||
| function formatPercentage(numbers) { | ||
| return numbers.map((number) => { | ||
| if (number > 100) { |
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The instruction is saying if number >= 100 then return "100%". Please amend your if statement
| function formatPercentage(numbers) { | ||
| return numbers.map((number) => { | ||
| if (number > 100) { | ||
| number = 100; |
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This bit isn't right. Can you think why? You are looping through array of numbers and then reassigning 100 to each element in return.
| return "Bush is safe to eat from"; | ||
| } else { | ||
| return "Toxic! Leave bush alone!"; | ||
| } |
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Nice one!
Two things to do if you're interested in learning more!
1- using some() and every() method together as the instruction says
2- when you have if else statement you can remove else, and just return what is supposed to be in else. Please research about it. It cleans up your code!
| function getSettlers() {} | ||
| function getSettlers(voyagers) { | ||
| return voyagers.filter( | ||
| (family) => family.startsWith("A") && family.includes("family") |
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Again startsWith is really handy here, but there's another simple way to get the first index of word and see if it is equal to "A"
| return students | ||
| .filter((student) => student[1] >= 8) | ||
| .map((student) => student[0]); | ||
| } | ||
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| // Implement the function body | ||
| return locations | ||
| .filter((location) => location.includes(transportMode)) | ||
| .map((location) => location[0]); | ||
| } |
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This is fine Andrius, you have already defined a funcition above called getLocationName, can you think how you can use this function in line 133?
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Hey Andrius, really well done for finishing this coursework, it wasn't mandatory though! Please read the comments and I'm happy to discuss them if it's not clear |
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