Aitor Alejandro Herrera AitorAlejandro

AitorAlejandro / getMaxFromArrayOfObjects.js

Created March 13, 2022 16:52

Get the max prop value from an object array

	const objectList = [
	{ value: 1 },
	{ value: 2 },
	{ value: 3 },
	{ value: 4 },
	{ value: 5 }
	];
	const maxValue = Math.max(...objectList.map(x => x.value));

	// maxValue -> 5

AitorAlejandro / arrayRangeOfNumbers.js

Created March 13, 2022 16:49

Create an array with a range of numbers

	const start = 0;
	const end = 100;
	const step = 10;
	const arrayLength = Math.floor(((end - start) / step)) + 1;
	const range = [...Array(arrayLength).keys()].map(x => (x * step) + start);

	// [0,10,20,30,40,50,60,70,80,90,100]

AitorAlejandro / loopover.js

Created March 13, 2022 16:41

Loop over an object to access both key and value

	const obj = { id: 1, name: 'laptop', price: 1200 };
	Object.entries(obj).forEach(([key, value]) => {
	console.log(key, value);
	});

AitorAlejandro / addPropsToObjByCond.js

Created March 13, 2022 16:34

Conditionally add properties to an object

AitorAlejandro / randomItem.ts

Created March 11, 2022 10:31

Get a random item of an array

	const randomItem = <T>(arr: T[]): T => arr[(Math.random() * arr.length) \| 0];

	randomItem(<number[]>[1, 2, 3, 4, 5]); // -> 4

AitorAlejandro / removeTrailingSlash.ts

Created March 11, 2022 10:30

Removes the trailing slash of a string

	const removeTrailingSlash = (value: string): string => value && value.charAt(value.length - 1) === '/' ? value.slice(0, -1) : value;

	removeTrailingSlash('foo-bar/'); // -> foo-bar

AitorAlejandro / randomHexColor.ts

Created March 11, 2022 10:26

Generates a random hex color

	const randomHexColor = (): string => `#${Math.floor(Math.random() * 0xffffff).toString(16).padEnd(6, '0')}`;

	randomHexColor(); // -> #dc7c40

AitorAlejandro / numberToLetter.ts

Created March 11, 2022 10:22

Converts a number to char/letter

	const numberToLetter = (value: number): string => String.fromCharCode(94 + value);

	numberToLetter(4); // -> b

AitorAlejandro / randomNumberString.ts

Created March 11, 2022 10:19

Generate a random number string based on the current time

	const randomNumberString = (): string => new Date().getTime() + Math.random().toString(36).slice(2);

	randomNumberString(); // -> 1646617484381wml196a8iso

AitorAlejandro / randomInteger.ts

Created March 11, 2022 10:16

Generates a random integer based on current time

	const randomInteger = (): number => new Date().getTime();

	randomInteger(); // -> 1646617367345