JavaScriptLearning/06_objects.js at main · sergiobagd/JavaScriptLearning · GitHub

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// Объекты
const person = {
    nameA: 'Sergey',
    age: 20,
    isProgrammer: true,
    languages: ['ru', 'en', 'de'],
    // 'complex key': 'Complex value',
    // ['key_' + (1 + 3)]: 'Computed key', // key_4
    greet() {
        console.log('Greetings from Armenia!')
    },
    info() {
        // console.log('this:', this)
        console.info('Информация про человека по имени:', this.nameA)
    }
}

// console.log(person.nameA)
// const ageKey = 'age'
// console.log(person[ageKey])
// console.log(person['complex key'])
// console.log(person)
// person.greet()

// person.age++
// person.languages.push('am')
// // person['key_4'] = undefined
// delete person['key_4']

// console.log(person)
// console.log(person['key_4'])

// const name = person.nameA
// const age = person.age
// const languages = person.languages

// const {nameA, age: personAge = 10, languages} = person
// console.log(person)

// for (let key in person) {
//     if (person.hasOwnProperty(key)) {
//     console.log('key:', key)
//     console.log('value:', person[key])
//     }
// }


// Object.keys(person).forEach((key) => {
//     console.log('key:', key)
//     console.log('value:', person[key])
// })


// Context
// person.info()

const logger = {
    keys() {
        console.log('Object Keys: ', Object.keys(this))
    },

    keysAndValues() {
        // Object.keys(this).forEach((key) => {
        //     console.log(`"${key}": ${this[key]};`)
        // })
        // const self = this
        Object.keys(this).forEach(function(key) {
            console.log(`"${key}": ${this[key]};`)
        }.bind(this))
    },

    withParams(top = false, between = false, bottom = false) {
        if (top) {
            console.log('---- Start ----')
        }
        Object.keys(this).forEach((key, index, array) => {
            console.log(`"${key}": ${this[key]};`)
            if (between && index !== array.length - 1) {
                console.log('--------------')
            }
        })

        if (bottom) {
            console.log('---- End ----')
        }
    }
}


// logger.keysAndValues.call(person)
logger.withParams.call(person, true, true, true)
logger.withParams.apply(person, [true, true, true])