object.keys
var person={
"first_name":"Harry",
"last_name":"Potter",
"age":14
};
var personSize = Object.keys(person).length; //gets number of properties (3) var myObj = {no:'u',my:'sql'}
var keys = Object.keys(myObj);//returnes the array ['no','my'];myObject = {
"key": "value"
}
Object.keys(myObject); // get array of keys// Object Entries returns object as Array of [key,value] Array
const object1 = {
a: 'somestring',
b: 42
}
Object.entries(object1) // Array(2) [["a", "something"], ["b", 42]]
.forEach(([key, value]) => console.log(`${key}: ${value}`))
// "a: somestring"
// "b: 42"const object1 = {
a: 'somestring',
b: 42,
c: false
};
console.log(Object.keys(object1));
// expected output: Array ["a", "b", "c"]Object.keys(whateverYourObjectIsCalled)
Also in JavaScript:
- how to sort array least to greatest javascript stACK
- wait javascript
- two button in one row react native
- ease between 2 points
- how to concatenate strings javascript
- viewdata array mvc razor javascript
- js change contenteditable value
- jquery number format comma
- javascript change button text onclick
- javascript fetch json
- javascript set and get cookie
- how to add json data to xmlhttprequest
- material ui grid react
- javascript fs write file with folder
- es6 js slug from string
- check is array javascript
- convert datetime javascript mysql
- adonisjs error: relation already exists
- js remove form object by key
- How to abreviate digits in js
- get element by class
- add dev dependency yarn
- jquery get class name
- jquery edit iframe content