js loop object keys 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 iterate over object
var obj = { first: "John", last: "Doe" };
Object.keys(obj).forEach(function(key) {
console.log(key, obj[key]);
});
Example 4: javascript loop through object example
var person={
first_name:"johnny",
last_name: "johnson",
phone:"703-3424-1111"
};
for (var property in person) {
console.log(property,":",person[property]);
}
Example 5: loop over keys in object javascript
Object.keys(obj).forEach(function(key) {
console.log(key, obj[key]);
});
Example 6: js loop through object
const obj = { a: 1, b: 2 };
Object.keys(obj).forEach(key => {
console.log("key: ", key);
console.log("Value: ", obj[key]);
} );