object iterate in javascript

for (var property in object) {
  if (object.hasOwnProperty(property)) {
    // Do things here
  }
}
let person={
 	first_name:"johnny",
  	last_name: "johnson",
	phone:"703-3424-1111"
};
for (let i in person) {
  let t = person[i]
  	console.log(i,":",t);
}for (let [key, value] of Object.entries(yourobject)) {
    console.log(key, value);
}
for (let key in yourobject) {
   if (yourobject.hasOwnProperty(key)) {
      console.log(key, yourobject[key]);
   }
}for (let key in yourobject) {
  console.log(key, yourobject[key]);
}
for (let key in yourobject) {
   if (yourobject.hasOwnProperty(key)) {
      console.log(key, yourobject[key]);
   }
}