<!DOCTYPE html>
<html lang="en-US">
<body>
<h1>JSON hasOwnProperty()</h1>
<button onclick="myFunction()">Click Me</button>
<script>
var data = [
{
"name": "Mike",
"age": 36,
"married": true
}
]
function myFunction(){
console.log(data[0].hasOwnProperty("age"))
console.log(data[0].hasOwnProperty("hair"))
}
</script>
<p><strong>Note</strong>: Click on the button and check your console</p> </body>
</html>