var test = {
prop1: {
prop1_1: 'blabla1',
prop1_2: 'blabla2',
prop1_3: 'blabla3',
},
prop2: {
prop2_1: 'blabla4',
prop2_2: 'blabla5',
prop2_3: 'blabla6',
},
};
for (let obj in test) {
for (let prop in obj) {
console.log(`test[${obj}][${prop}] = ${test[obj][prop]}`)
}
}