iterate over object array javascript code example
Example 1: 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 2: js loop through object
const obj = { a: 1, b: 2 };
Object.keys(obj).forEach(key => {
console.log("key: ", key);
console.log("Value: ", obj[key]);
} );
Example 3: javascript loop through array of objects
var people=[
{first_name:"john",last_name:"doe"},
{first_name:"mary",last_name:"beth"}
];
for (let i = 0; i < people.length; i++) {
console.log(people[i].first_name);
}
Example 4: loop an object in javascript
var obj = { first: "John", last: "Doe" };
Object.keys(obj).forEach(function(key) {
console.log(key, obj[key]);
});
Example 5: javascript loop through array of objects
yourArray.forEach(function (arrayItem) {
var x = arrayItem.prop1 + 2;
console.log(x);
});
Example 6: iterate over array of objects javascript
const myArray = [{x:100}, {x:200}, {x:300}];
const sum = myArray.map(element => element.x).reduce((a, b) => a + b, 0);
console.log(sum);
const average = sum / myArray.length;
console.log(average);