Let the following two-dimensional object be given:
let obj = {
a: {
1: 'a1',
2: 'a2',
3: 'a3',
},
b: {
1: 'b1',
2: 'b2',
3: 'b3',
},
c: {
1: 'c1',
2: 'c2',
3: 'c3',
},
}
Let's display all its elements on the
screen. To do this, we need to run two
nested loops for-in
:
for (let key in obj) {
let subObj = obj[key];
for (let subKey in subObj) {
console.log(subObj[subKey]);
}
}
Given the following object:
let obj = {
1: {
1: 11,
2: 12,
3: 13,
},
2: {
1: 21,
2: 22,
3: 23,
},
3: {
1: 24,
2: 25,
3: 26,
},
}
Using loops, find the sum of this object elements.
Given the following object:
let obj = {
1: {
1: {
1: 111,
2: 112,
3: 113,
},
2: {
1: 121,
2: 122,
3: 123,
},
},
2: {
1: {
1: 211,
2: 212,
3: 213,
},
2: {
1: 221,
2: 222,
3: 223,
},
},
3: {
1: {
1: 311,
2: 312,
3: 313,
},
2: {
1: 321,
2: 322,
3: 323,
},
},
}
Using loops, find the sum of this object elements.