how to iterate through fields of an object in javascript code example

Example 1: javascript iterate over object

var obj = { first: "John", last: "Doe" };

Object.keys(obj).forEach(function(key) {
    console.log(key, obj[key]);
});

Example 2: loop an object properties in ts

Object.keys(obj).forEach(e => console.log(`key=${e}  value=${obj[e]}`));