starke v1.0.75

starke

starke means powerful

wonderful utils for javascript developer

模块简介

Example of Determination

1. isEmpty Function

// isEmpty support strict or loose non-empty judgment of objects
// It can effectively avoid the null pointer problem in front-end development.
const obj = {
    name: '',
    auhtor: '',
    hobby: []
}
// false
const empty = isEmpty(obj)
// ture
const empty = isEmpty(obj, true)

2. clearObject Function

// Sometimes we want to keep the keys of the object while emptying the cache
let cache = {
    name: 'starke',
    auhtor: '4everlynn',
    hobby: ['coding', 'music']
}
// after call this obj will be empty
// like {name: '', author: '', hobby: []} 
// which could be judged as true by isEmpty
clearObject(obj)

3. equals Function

// Sometimes we want to determine whether two objects are equal in attribute values.
// this function will be usefull
let user = {
    name: '4everlynn',
    hobby: ['coding', 'music']
}
let cache = {
    name: '4everlynn',
    hobby: ['coding', 'music']
}
// false
const isEqual = user === cache
// true
const starkeEq = equals(user, cache)
// It can even handle the equality of ring objects.
// And starke create this function by hash, which is very stable

4. hash Function

// Get the hash code of the string
const string = 'Hello Starke'
const code = hash(string)

5. filter Function

// Filter array by condition
const users = [{
    user: '4everlynn',
    age: 20
}, {
    user: 'Starke',
    age: 1
}, {
    user: 'Lynn',
    age: 18
}]
/** result 
 [{
    user: '4everlynn',
    age: 20
}, {
    user: 'Lynn',
    age: 18
}]
 */
const target = filter(users, item => {
    return item.age < 20
})

6. group Function

// group array by condition
const users = [{
    user: '4everlynn',
    age: 20,
    role: 'admin'
}, {
    user: 'Starke',
    age: 1,
    role: 'admin'
}, {
    user: 'Lynn',
    age: 18,
    role: 'user'
}]
// result:
// [ [ { user: '4everlynn', age: 20, role: 'admin' },
//         { user: 'Starke', age: 1, role: 'admin' } ],
//       [ { user: 'Lynn', age: 18, role: 'user' } ] ]
const target = group(users, item => {
    // group by 'role'
    return item.role
})

7. hashColor Function

const category = 'Operate'
// Generate a stable RGB color based on the string
// rgb(232.2421875, 160, 244)
const color = hashColor(category)
// No matter how many times it runs, the result is the same.