get keys objet javascript
var foo = {
'alpha': 'puffin',
'beta': 'beagle'
};
var keys = Object.keys(foo);
console.log(keys) // ['alpha', 'beta']
// (or maybe some other order, keys are unordered).get keys objet javascript
var foo = {
'alpha': 'puffin',
'beta': 'beagle'
};
var keys = Object.keys(foo);
console.log(keys) // ['alpha', 'beta']
// (or maybe some other order, keys are unordered).javascript foreach object keys
var lunch = {
sandwich: 'ham',
snack: 'chips',
drink: 'soda',
desert: 'cookie',
guests: 3,
alcohol: false,
};
Object.keys(lunch).forEach(function (item) {
console.log(item); // key
console.log(lunch[item]); // value
});
// returns "sandwich", "ham", "snack", "chips", "drink", "soda", "desert", "cookie", "guests", 3, "alcohol", falseReturn the Objects Keys and Values
const keysAndValues = (obj) => [Object.keys(obj), Object.values(obj)];
keysAndValues({a: 1, b: 2, c: 3});
//➞ [["a", "b", "c"], [1, 2, 3]]
keysAndValues({a: "Dell", b: "Microsoft", c: "Google"}));
//➞ [["a", "b", "c"], ["Dell", "Microsoft", "Google"]]
keysAndValues({key1: true, key2: false, key3: undefined});
// ➞ [["key1", "key2", "key3"], [true, false, undefined]]javascript object get value by key
const person = {
name: 'Bob',
age: 47
}
Object.keys(person).forEach((key) => {
console.log(person[key]); // 'Bob', 47
});js select keys from object
const object = { a: 5, b: 6, c: 7 };
const picked = (({ a, c }) => ({ a, c }))(object);
console.log(picked); // { a: 5, c: 7 }how to get keys in an object javascript
Object.keys(whateverYourObjectIsCalled)Copyright © 2021 Codeinu
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