var pp = {'name': '1','work': 'teacher'}

var kk = [1,2]

var tt = []

for(let index = 0; index<kk.length;index++) {

    tt.push({...pp})

}

for(let index = 0; index<kk.length;index++) {

    tt[index].age = kk[index]

}

console.log(tt)

1. tt(2) [{…}, {…}]
1. 0:{name: "1", work: "teacher", age: 1}
2. 1:{name: "1", work: "teacher", age: 2}
3. length:2
4. __proto__:Array(0)