JavaScript/promise.html at main · kishan80090/JavaScript · GitHub

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<!DOCTYPE html>

<html>
<head>
<title>Promise</title>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
 <script>
 function f1(n)
 {

 var promise = new Promise(function(resolve, reject) {

 if(n%2==0)
    resolve('Your Promise Accepted');
	else
	reject('Your Promise Rejected');
})

promise
    .then(function(successMsg) {
        console.log(successMsg);
    }, function(errorMsg) {
       //To error handler function is invoked
        console.log(errorMsg);
    })
	}
 </script>
</head>
<body>
 Output<div id="output"></div><br/>

 <input type="button" value="Promise" onclick="f1(4)"><br/>

</body>
</html>