find key in object javascript code example
Example 1: how to check if object has key javascript
myObj.hasOwnProperty('key')
Example 2: how to find the key of an value in an object
function getKeyByValue(object, value) {
return Object.keys(object).find(key => object[key] === value);
}
const map = {"first" : "1", "second" : "2"};
console.log(getKeyByValue(map,"2"));
Example 3: js object contain key
if ('key' in myObj)
if (!myObj.hasOwnProperty('key'))
Example 4: js get object keys
myObject = {
"key": "value"
}
Object.keys(myObject);
Example 5: js find key by value in object
Object.keys(object).find(key => object[key] === value)
Example 6: object keys javascript
const object1 = {
a: 'somestring',
b: 42,
c: false
};
console.log(Object.keys(object1));