javascript looping over objects code example

Example 1: javascript loop through object

Object.entries(obj).forEach(
    ([key, value]) => console.log(key, value)
);

Example 2: javascript loop through object

// object to loop through
let obj = { first: "John", last: "Doe" };

// loop through object and log each key and value pair
//ECMAScript 5
Object.keys(obj).forEach(function(key) {
    console.log(key, obj[key]);
});

//ECMAScript 6
for (const key of Object.keys(obj)) {
    console.log(key, obj[key]);
}

//ECMAScript 8
Object.entries(obj).forEach(
    ([key, value]) => console.log(key, value)
);

// OUTPUT
/*
   first John
   last Doe
*/

Example 3: javascript loop through object values

var myObj = {foo: "bar", baz: "baz"};
Object.values(myObj).map((val) => {
console.log(val);
})
// "bar" "baz"

Example 4: javascript loop through object

var person = {"name":"bob", age:45};

for (var property in person) {
   console.log(person[property]);
}