A modern JavaScript utility library delivering modularity, performance, and extras.
Note: A modern JavaScript utility library delivering modularity, performance, and extras.
<script src="https://cdn.jsdelivr.net/npm/celia/celia.min.js"></script>
<script>
// window.celia
celia.each
celia.isArrayLike
celia.isAsyncFunction
celia.isDate
celia.isFalsy
celia.looseEqual
celia.sleep
// ...
// ...
</script>
npm install celia --save
// es6
import { assign, each, getUid, hasOwn, isArrayLike, isUndefined, isWindow, looseEqual, map, noop, sleep, toString, type } from 'celia');
// modularity
import each from 'celia/each';
import isArrayLike from 'celia/isArrayLike';
import isAsyncFunction from 'celia/isAsyncFunction';
import isDate from 'celia/isDate';
import isFalsy from 'celia/isFalsy';
import looseEqual from 'celia/looseEqual';
import sleep from 'celia/sleep';
// ...
// ...
// node
const { assign, each, getUid, hasOwn, isArrayLike, isUndefined, isWindow, looseEqual, map, noop, sleep, toString, type } = require('celia');
// or
const each = require('celia/each');
const isArrayLike = require('celia/isArrayLike');
const isAsyncFunction = require('celia/isAsyncFunction');
const isDate = require('celia/isDate');
const isFalsy = require('celia/isFalsy');
const looseEqual = require('celia/looseEqual');
const sleep = require('celia/sleep');
// ...
// ...
assert(condition, msg)
condition <Boolean>msg <String> error messageThrows
<Error> throws Error if condition is falseassert(1 !== 1, 'assertion error');
// => throw Error: assertion error
value <Array|ArrayLike|String|Number|Object>callback <Function>context <any> optionaleach([1, 2], (val, index)=> {
})
each({ a: 1, b: 2 }, (val, key)=> {
})
each(5, (index, index)=> {
})
each('hello', (c, index)=> {
})
easyHash(value)
value <any>Returns
<String> returns an easy hash valueeasyHash('abc')
// => 'sabc'
easyHash(1)
// => 'n1'
easyHash({})
// => 'o1'
hasOwn(obj, key)
obj <Object>key <any>Returns
<Boolean>const obj = { aaa: 111 };
hasOwn(obj, 'test')
// => false
hasOwn(obj, 'aaa')
// => true
looseClone(value)
value <Object>Returns
<Object>const a = { a: 1 };
const b = looseClone(a);
// => a !== b
looseEqual(a, b)
a <any>b <any> ，用于跟 a 比较Returns
<Boolean>looseEqual(null, undefined)
// => false
looseEqual(null, null)
// => true
looseEqual({ a: 1, b: 2 }, { a: 1, b: 2 })
// => true
looseEqual([1, 2], [1, 2])
// => true
looseEqual(/\d+/, /\d+/)
// => true
looseEqual(new Date(2019, 0, 1, 9, 9, 9), new Date(2019, 0, 1, 9, 9, 9))
// => true
noop(value)
Returns
<Function>noop()
// => function() {}
sleep(value)
value <Number> millisecondsReturns
<Promise>async function foo() {
await sleep(3000);
}
toString(value)
value <any>Returns
<String>toString({})
// => '[object Object]'
toString([])
// => '[object Array]'
isAbsoluteURL(url)
url <String> a request urlReturns
<Boolean> returns true if the url is a absolute request urlisAbsoluteURL('/src/isAbsoluteURL.js'))
// => false
isAbsoluteURL('https://github.com'))
// => true
isArrayLike(value)
value <any>Returns
<Boolean>isArrayLike('123')
// => true
isArrayLike(() => { })
// => false
isArrayLike([])
// => true
isArrayLike([1, 2, 3])
// => true
isArrayLike({ 0: 1, length: 1 })
// => true
isAsyncFunction(value)
value <any>Returns
<Boolean>isAsyncFunction(async () => { })
// => true
isAsyncFunction(() => { })
// => false
isBoolean(value)
value <any>Returns
<Boolean>isBoolean(() => { })
// => false
isBoolean(true)
// => true
isDate(value)
value <any>Returns
<Boolean>isDate(new Date())
// => true
isDate({})
// => false
isFalsy(value)
value <any>Returns
<Boolean>isFalsy(false)
// => true
isFalsy(null)
// => true
isFalsy(undefined)
// => true
isFalsy(0)
// => true
isFalsy(NaN)
// => true
isFalsy('')
// => true
isFalsy({})
// => false
isFunction(value)
value <any>Returns
<Boolean>isFunction(async () => { })
// => true
isFunction(() => { })
// => true
isFunction({})
// => false
isInteger(value)
value <any>Returns
<Boolean>isInteger(2)
// => true
isInteger(-2)
// => true
isInteger(1.23)
// => false
isInteger(-1.23)
// => false
isInteger(null)
// => false
isInteger(undefined)
// => false
isInteger('2'));
// => false
isInteger(Infinity)
// => false
isLeapYear(value)
value <any>Returns
<Boolean>isLeapYear(1997)
// => false
isNil(value)
value <any>Returns
<Boolean>isNil(null)
// => true
isNil(undefined)
// => true
isNil({})
// => false
isNumber(value)
value <any>Returns
<Boolean>isNumber(1)
// => true
isNumber(undefined)
// => false
isNumber({})
// => false
isObject(value)
value <any>Returns
<Boolean>isObject(1)
// => false
isObject(undefined)
// => false
isObject({})
// => true
isPlainObject(value)
value <any>Returns
<Boolean>isPlainObject(new Date())
// => false
isPlainObject({})
// => true
isPromiseLike(value)
value <any>Returns
<Boolean>isPromiseLike(null)
// => false
isPromiseLike(undefined)
// => false
isPromiseLike({})
// => false
isPromiseLike(new Promise(() => { }))
// => true
isPromiseLike({ then: () => { }, catch: () => { } })
// => true
isRegExp(value)
value <any>Returns
<Boolean>isRegExp(null)
// => false
isRegExp(undefined)
// => false
isRegExp({})
// => false
isRegExp(Object.create(null))
// => false
isRegExp(/\d+/)
// => true
isString(value)
value <any>Returns
<Boolean>isString(null)
// => false
isString({})
// => false
isString(1)
// => false
isString(true)
// => false
isString('')
// => true
isUndefined(value)
value <any>Returns
<Boolean>isUndefined(null)
// => false
isUndefined(undefined)
// => true
isValidDate(value)
value <any>Returns
<Boolean>isValidDate(null)
// => false
isValidDate(undefined)
// => false
isValidDate(new Date(NaN))
// => false
isValidDate(new Date())
// => true
isWindow(value)
value <any>Returns
<Boolean>isWindow(null)
// => false
isWindow(undefined)
// => false
isWindow(window)
// => true
map(value, callback[, context])
value <Array|ArrayLike|String|Number|Object>callback <Function>context <any> optionalReturns
<Array>map([1, 2, 3, 4, 5], n => n + 1)
// => [2, 3, 4, 5, 6]
map([1, null, 2, undefined, 3, 4, 5], n => n && (n + 1))
// => [2, 3, 4, 5, 6]
map({ a: 1, b: 2 }, n => n && (n + 1))
// => [2, 3]
transform(value, iterater, accumulator)
value <any>iterater <Function>accumulator <any> initial valueReturns
<any>const obj = { a: 1, b: 2 };
const newObj = transform(obj, (newObj, value, key) => {
newObj[key] = value + 1;
}, {});
// => { a: 2, b: 3 }
const arr = [1, 2];
const newArr = transform(arr, (newArr, value, key) => {
newArr[key] = value + 1;
}, []);
// => [2, 3]
uid(obj)
obj <Object>Returns
<Number>uid({})
// => 1
uid({})
// => 2
obj <Object>mappingsalias({ a: 1, b: 2 }, {
a: 'c',
b: ['e', 'f']
});
// => { a: 1, b: 2, c: 1, e: 2, f: 2 }
assign(value, value2[, ...args])
value <Object>value2 <Object>args <...Object>Returns
<Object>const a = { a: 1 };
const b = { b: 2 };
const c = { c: 3 };
assign(a, b, c);
// => { a: 1, b: 2, c: 3 }
deepAssign(value, value2[, ...args])
value <Object>value2 <Object>args <...Object>Returns
<Object>const a = { a: 1 };
const b = { b: {bb: 11} };
deepAssign(a, b);
// => a.b !== b.b
value <Object>callback <Function>context <any> optionalforIn({ a: 1, b: 2 }, (val, key) => {
});
value <Object>callback <Function>context <any> optionalforOwn({ a: 1, b: 2 }, (val, key) => {
});
get(object, path[, defaultValue])
object <Object>path <String>defaultValue <any> optionalReturns
<any>const a = { a: [{ b: { c: 3 } }], key: 'value' };
get(null, 'a[0].b.c', 3)
// => 3
get(a, 'a[0].b.c')
// => 3
get(a, 'a["0"].b.c')
// => 3
get(a, 'a.b.c')
// => undefined
get(a, 'a.b.c', 'default')
// => 'default'
get(a, 'key')
// => 'value'
get({ key: null }, 'key')
// => null
object <Object>path <String>value <any>const a = { a: [{ b: { c: 3 } }], key: 'value' };
set(a, 'a[0].b.c', 1);
// => { a: [{ b: { c: 1 } }], key: 'value' }
deepFlat(arr)
arr <Array>Returns
<Array>const arr1 = [1, [2], [], 3, 4, 5];
deepFlat(arr1)
// => [1, 2, 3, 4, 5]
const arr2 = [1, [2, [1, 2, [2, 3]], 3], [], 3, [[1, 2], [[1, 2, 3], 3], [1, 2]], 4, 5];
deepFlat(arr2)
// => [1, 2, 1, 2, 2, 3, 3, 3, 1, 2, 1, 2, 3, 3, 1, 2, 4, 5]
flat(arr[, depth])
arr <Array>depth <Number> Default: 1flat
<Array>const arr1 = [1, [2], [], 3, 4, 5];
flat(arr1)
// => [1, 2, 3, 4, 5]
const arr2 = [1, 2, 3, [2, 3, 4], [[1, 2, 3], [3, 4, 5]], 1, 3, 4];
flat(arr2)
// => [1, 2, 3, 2, 3, 4, [1, 2, 3], [3, 4, 5], 1, 3, 4]
forEach(arr, callback[, context])
arr <Array>callback <Function>context <any> OptionalforEach(arr, start, callback[, context])
arr <Array>start <Number>callback <Function>context <any> OptionalforEach(arr, start, end, callback[, context])
arr <Array>start <Number>end <Number>callback <Function>context <any> Optionallet i = 0;
forEach([1, 2, 3], function(num) {
if (num === 1) {
return false;
}
i++;
});
// i === 0
i = 0;
forEach([1, 2, 3, 4, 5], 1, function(num) {
if (num === 3) {
return false;
}
i++;
});
// i === 1
i = 0;
forEach([1, 2, 3, 4, 5], 1, -1, function(num) {
i++;
});
// i === 3
remove(arr, value)
arr <Array>value <any>Returns
<any> returns something being removedconst arr = [1, 2, 3, 4, 5];
remove(arr, 2)
// => 2
remove(arr, 9)
// => null
removeAt(arr, index)
arr <Array>index <Number>Returns
<any> returns something being removedconst arr = [1, 2, 3, 4, 5];
removeAt(arr, 2)
// => 3
removeAt(arr, 9)
// => null
camelize(value)
value <String>Returns
<String>camelize('-value')
// => 'Value'
camelize('data-value')
// => 'dataValue'
camelize('data-------value')
// => 'dataValue'
camelize('data-attr-value')
// => 'dataAttrValue'
camelize('data--attr--value')
// => 'dataAttrValue'
camelize('data_value')
// => 'dataValue'
camelize('data_______value')
// => 'dataValue'
camelize('data_attr_value')
// => 'dataAttrValue'
camelize('data__attr__value')
// => 'dataAttrValue'
camelize('data value')
// => 'dataValue'
camelize('data value')
// => 'dataValue'
camelize('data attr value')
// => 'dataAttrValue'
camelize('data attr value')
// => 'dataAttrValue'
camelize('data.value')
// => 'dataValue'
camelize('data.......value')
// => 'dataValue'
camelize('data.attr.value')
// => 'dataAttrValue'
camelize('data..attr..value')
// => 'dataAttrValue'
capitalize(value)
value <String>Returns
<String>capitalize('value')
// => 'Value'
base <String>arg <String|Number|Boolean>pathJoin('https://www.baidu.com', 'path1')
// => 'https://www.baidu.com/path1'
pathJoin('https://www.baidu.com/', 'path1')
// => 'https://www.baidu.com/path1'
pathJoin('https://www.baidu.com', 'path1', 'path2)
// => 'https://www.baidu.com/path1/path2'
val <String>obj <Object>
stringFormat('共{ page }条记录', {})
// => '共{ page }条记录'
stringFormat('共{ page }条记录', { page: 2 })
// => '共2条记录'
obj <Object>methodName <String>after <Function>const obj = {
counter: 2,
increment() {
this.counter++;
}
};
afterCall(obj, 'increment', function (args, ret) {
this.counter = 1;
});
obj.increment();
// 1
obj <Object>methodName <String>after <Function>const obj = {
counter: 2,
increment() {
this.counter++;
}
};
aroundCall(obj, 'increment', function (args, fn) {
this.counter = 2;
fn.apply(this, args);
this.counter = 2;
});
obj.increment();
// 2
obj <Object>methodName <String>after <Function>const obj = {
counter: 2,
increment() {
this.counter++;
}
};
beforeCall(obj, 'increment', function () {
this.counter = 1;
});
obj.increment();
// 2
debounce(func, wait)
func <Function>wait <Number>Returns
<Function>async function() {
let i = 0;
const counter = debounce(() => {
i++;
}, 200);
counter();
await sleep(100);
counter();
await sleep(100);
counter();
await sleep(200);
//=> 1 === 1
}
FAQs
A modern JavaScript utility library delivering modularity, performance, and extras.
The npm package celia receives a total of 1,080 weekly downloads. As such, celia popularity was classified as popular.
We found that celia demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 1 open source maintainer collaborating on the project.
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