quest1

const instructors = [

{

name: 'John',

availability: 'all',

specialities: ['Javascript', 'Python', 'C++']

},

{

name: 'Mary',

availability: 'weekend',

specialities: ['Javascript', 'Ruby', 'C++']

},

{

name: 'Chris',

availability: 'evenings',

specialities: ['Javascript']

},

{

name: 'Anthony',

availability: 'all',

specialities: ['Python', 'Ruby']

},

{

name: 'Pauline',

availability: 'only Mondays',

specialities: ['Javascript', 'Html', 'CSS']

},

{

name: 'Mark',

availability: 'all',

specialities: ['C#', 'C++', 'Javascript']

},

{

name: 'Helen',

availability: 'evenings',

specialities: ['Python', 'C++']

},

{

name: 'Charles',

availability: 'none',

specialities: ['Python']

}

];

// const filter = 'Javascript'

const filteredResult = instructors.filter(item => item.specialities.includes("Javascript"))

.filter(item => item.availability === 'all' || item.availability === 'weekend')

console.log(filteredResult)

const filter2 = 'Python'

const finalFilter = filteredResult.map(item => (item.specialities.indexOf(filter2) >= 0) ?

`Hi ${item.name}, we inform you that this weekend you will be doing the support class and you need to prepare a Python workshop`

:`Hi ${item.name}, we inform you that this weekend you will be doing the support class`)

console.log(finalFilter)