object check if a property exist or not code example

Example 1: how to check wether the property exist in a object in java script

if (obj.hasOwnProperty('prop')) {
    // do something
}

Example 2: check if property exists javascript

// the coolest way
const obj = {
 weather: 'Sunny; 
}

if('weather' in obj) {
 // do something 
}