javascript loop through object
Object.entries(obj).forEach(
([key, value]) => console.log(key, value)
);javascript loop through object
Object.entries(obj).forEach(
([key, value]) => console.log(key, value)
);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
*/iterate over object javascript
// Looping through arrays created from Object.keys
const keys = Object.keys(fruits)
for (const key of keys) {
console.log(key)
}
// Results:
// apple
// orange
// pearjavascript loop object
let obj = {
key1: "value1",
key2: "value2",
key3: "value3"
}
Object.keys(obj).forEach(key => {
console.log(key, obj[key]);
});
// key1 value1
// key2 value2
// key3 value3
// using for in - same output as above
for (let key in obj) {
let value = obj[key];
console.log(key, value);
}javascript loop through object
for (var property in object) {
if (object.hasOwnProperty(property)) {
// Do things here
}
}javascript for loop on object
/Example 1: Loop Through Object Using for...in
// program to loop through an object using for...in loop
const student = {
name: 'John',
age: 20,
hobbies: ['reading', 'games', 'coding'],
};
// using for...in
for (let key in student) {
let value;
// get the value
value = student[key];
console.log(key + " - " + value);
}
/Output
name - John
age - 20
hobbies - ["reading", "games", "coding"]
//If you want, you can only loop through the object's
//own property by using the hasOwnProperty() method.
if (student.hasOwnProperty(key)) {
++count:
}
/////////////////////////////////////////
/Example 2: Loop Through Object Using Object.entries and for...of
// program to loop through an object using for...in loop
const student = {
name: 'John',
age: 20,
hobbies: ['reading', 'games', 'coding'],
};
// using Object.entries
// using for...of loop
for (let [key, value] of Object.entries(student)) {
console.log(key + " - " + value);
}
/Output
name - John
age - 20
hobbies - ["reading", "games", "coding"]
//In the above program, the object is looped using the
//Object.entries() method and the for...of loop.
//The Object.entries() method returns an array of a given object's key/value pairs.
//The for...of loop is used to loop through an array.
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