I have used this code same theory I have used but 1one work but 2nd does not work in JavaScript
var me_labba = {
name: 'kezara',
bd: '1999'
};
var str_walata_awlak_na = "sdasdasd"
let key;
//1st one
for (key of str_walata_awlak_na) {
console.log(key);
}
//2nd one
for (key of me_labba) {
console.log(key);
}Use for in with Objects in in Javascript
for (key in me_labba){
console.log(key);
}
Or use Object.keys
Object.keys(me_labba).forEach((k) => console.log(k))