# delete operator in JavaScript

You can delete elements of objects using the `delete` operator. Let's look at examples. Suppose we are given such an object:

`let obj = {a: 1, b: 2, c: 3};`

Let's delete one of the elements of our object:

`delete obj.b;`

Let's see what we got:

`console.log(obj); // shows {a: 1, c: 3}`

Tell me what will be output to the console as a result of executing the following code:

`let obj = {x: 1, y: 2, z: 3}; delete obj.x; console.log('x' in obj);`
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