brabbelback

Just some JS utils

Installation

You can use brabbelback in your project by installing it using npm:

npm i @schascha/brabbelback

Usage

Array

has(array, value)

Finds a value in array recursively.

import { has } from '@schascha/brabbelback';

const array = ['foo', 'bar', 'baz'];
console.log(has(array, 'foo')); // true
console.log(has(array, ['foo', 'bar'])); // true

isEmpty(value)

Checks if value or array is empty.

import { isEmpty } from '@schascha/brabbelback';

console.log(isEmpty(null)); // true
console.log(isEmpty('')); // true
console.log(isEmpty([])); // true
console.log(isEmpty([[]])); // true

last(array)

Returns last element from array.

import { last } from '@schascha/brabbelback';

const array = ['foo', 'bar', 'baz'];
console.log(last(['foo', 'bar', 'baz'])); // 'baz'

next(index, array, loop = false)

Returns next element from array.

import { next } from '@schascha/brabbelback';

const array = ['foo', 'bar', 'baz'];
console.log(next(0, array)); // 'bar'
console.log(next(2, array)); // 'foo'
console.log(next(2, array, false)); // Disable infinite loop through array. Returns `undefined`.

prev(index, array, loop = true)

Returns previous element from array.

import { prev } from '@schascha/brabbelback';

const array = ['foo', 'bar', 'baz'];
console.log(prev(0, array)); // 'baz'
console.log(prev(2, array)); // 'bar'
console.log(prev(0, array, false)); // Disable infinite loop through array. Returns `undefined`.

print(value, separator = ', ')

Prints a value or an array of values.

import { print } from '@schascha/brabbelback';

console.log(print('foo')); // 'foo'
console.log(print(['foo', 'bar', 'baz'])); // 'foo, bar, baz'
console.log(print(['foo', 'bar', 'baz'], '|')); // 'foo|bar|baz'

push(array, value, unique = true)

Pushs a value or an array of values recursively.

import { push } from '@schascha/brabbelback';

const array = [];
push(array, 'foo'); // ['foo']
push(array, ['foo', 'bar', 'baz']); // ['foo', 'bar', 'baz']
push(array, 'foo', false); // Disable unique push of strings and numbers. Returns ['foo', 'bar', 'baz', 'foo']

random(array)

Returns random element from array.

import { random } from '@schascha/brabbelback';

const array = ['foo', 'bar', 'baz'];
console.log(random(array)); // 'foo' or 'bar' or 'baz'

shuffle(array)

Randomize array.

import { shuffle } from '@schascha/brabbelback';

const array = ['foo', 'bar'];
console.log(shuffle(array)); // ['foo', 'bar'] or ['bar', 'foo']

toArray(value)

Returns value as an array if it's not one.

import { toArray } from '@schascha/brabbelback';

console.log(toArray('foo')); // ['foo']
console.log(toArray(['foo'])); // ['foo']
console.log(toArray()); // []

Classnames

classnames(classes)

Conditional class name helper.

import { classnames } from '@schascha/brabbelback';

classnames('foo', 'bar', { baz: true }); // => 'foo bar baz'
classnames(['foo', 'bar', 'baz']); // => 'foo bar baz'
classnames({ foo: true, bar: undefined }, 'baz'); // 'foo baz'

Cookie

setCookie(name, value, days = 1)

Create a cookie.

import { setCookie } from '@schascha/brabbelback';

setCookie('name', 'value');
setCookie('name', 'value', 7); // Create a cookie that expires 7 days from now

getCookie(name)

Get cookie by name.

import { getCookie } from '@schascha/brabbelback';

getCookie('name');

removeCookie(name)

Remove cookie.

import { removeCookie } from '@schascha/brabbelback';

removeCookie('name'); // Same as setCookie('name', '', 0);

clearCookies()

Clear all cookies.

import { clearCookies } from '@schascha/brabbelback';

clearCookies();

Copy

copy(text)

Copy text to the clipboard.

import { copy } from '@schascha/brabbelback';

copy('foo');

Date

addDays(date, days)

Add days to a date.

import { addDays } from '@schascha/brabbelback';

console.log(addDays(new Date('2020-01-01'), 1)); // new Date('2020-01-02')

addMonths(date, months)

Add months to a date.

import { addMonths } from '@schascha/brabbelback';

console.log(addMonths(new Date('2020-01-01'), 1)); // new Date('2020-02-01')

addYears(date, years)

Add years to a date.

import { addYears } from '@schascha/brabbelback';

console.log(addYears(new Date('2020-01-01'), 1)); // new Date('2021-01-01')

diffInDays(date1, date2)

Get the difference in days between two dates.

import { diffInDays } from '@schascha/brabbelback';

console.log(diffInDays(new Date('2020-01-01'), new Date('2020-02-01'))); // 31

daysInMonth(date)

Get the number of days in a month.

import { daysInMonth } from '@schascha/brabbelback';

console.log(daysInMonth(new Date('2020-01-01')); // 31

formatDate(date, format = 'YYYY-MM-DD')

Format a date as YYYY-MM-DD or a custom format.

import { formatDate } from '@schascha/brabbelback';

console.log(formatDate(new Date('2020-01-31')); // 2020-01-31
console.log(formatDate(new Date('2020-01-31'), 'DD.MM.YYYY'); // 31.01.2020

Event

debounce(fn, delay)

Debounce function to prevent multiple calls in a short period of time.

import { debounce } from '@schascha/brabbelback';

throttled(fn, delay)

Throttle function to reduce the trigger rate.

import { throttled } from '@schascha/brabbelback';

Filter

compare(a, b, operator = '')

Compare values.

import { compare } from '@schascha/brabbelback';

filter(obj, filters)

Filter an array of objects with multiple criteria.

import { filter } from '@schascha/brabbelback';

groupBy(array, key)

Group array items by key.

import { groupBy } from '@schascha/brabbelback';

const array = [
	{ group: 'foo', name: 'Item 1' },
	{ group: 'bar', name: 'Item 2' },
	{ group: 'foo', name: 'Item 3' },
	{ name: 'Item 4' },
];
console.log(groupBy(array, 'group'));

/*
{
	foo: [
		{group: 'foo', name: 'Item 1'},
		{group: 'foo', name: 'Item 3'}
	],
	bar: [
		{group: 'bar', name: 'Item 2'}
	],
	undefined: [
		{ name: 'Item 4'}
	]
}
*/

Inject

injectScript(src)

import { injectScript } from '@schascha/brabbelback';

Math

gcd(a, b)

import { gcd } from '@schascha/brabbelback';

console.log(gcd(8, 12)); // 4

ratio(a, b)

import { ratio } from '@schascha/brabbelback';

console.log(ratio(1024, 768)); // 4:3

Scroll

scrollToTop(el, offset = 0, behavior = 'smooth')

Scroll to the top of the element.

import { scrollToTop } from '@schascha/brabbelback';

const el = document.querySelector('.el');
scrollToTop(el);

// Scroll to element with sticky header
scrollToTop(el, '.header');

// Scroll to element with offset
scrollToTop(el, 100);

Text

truncate(str, length = 250, ending = '...')

Truncate a string to a certain length

import { truncate } from '@schascha/brabbelback';

truncate('Hello World', 8); // Hello...

Type

typeOf(value)

Type-checking with Object.prototype.toString() method.

import { typeOf } from '@schascha/brabbelback';

console.log(typeOf('foo')); // string
console.log(typeOf(['foo'])); // array
console.log(typeOf({ foo: 'bar' })); // object

Visible

isVisible(el)

Test if a DOM element is visible on the users viewport.

import { isVisible } from '@schascha/brabbelback';

const el = document.getElementById('name');
console.log(isVisible(el));

Bugs? 🐛

Please let me know: https://github.com/Schascha/brabbelback/issues

Buy me a Coffee ☕

Support this project and others via PayPal. Thanks

Changelog

Detailed changes for each release are documented in the release notes.

License

MIT

Copyright (c) 2018 Sascha Künstler