javascript hasownproperty return value code example

Example 1: has own propriety javascrip

var x = {
    y: 10
};
console.log(x.hasOwnProperty("y")); //true
console.log(x.hasOwnProperty("z")); //false

Example 2: has own propriety javascrip

if (someVar.hasOwnProperty('someProperty') ) {
 // do something();
} else {
 // do somethingElse();
}