Tryit Editor v2.9

Edit This Code:
<!DOCTYPE html>
<html>
<body>

<p>Click this button to invoke an onclick event, and check whether it is trusted:</p>
<button id="myBtn" onclick="myFunction(event)">Try it</button>

<p>Click this button to trigger an onclick event by a script, and check whether it is trusted:</p>
<button onclick="triggerClick()">Try it</button>

<p><strong>Note:</strong> The isTrusted property is not supported in Safari and IE8 and earlier.</p>

<script>
function myFunction(event) {
    if ("isTrusted" in event) {
        if (event.isTrusted) {
            alert ("The " + event.type + " event is trusted.");
        } else {
            alert ("The " + event.type + " event is not trusted.");
        }
    } else {
        alert ("The isTrusted property is not supported by your browser");
    }
}

function triggerClick() {
    var btn = document.getElementById("myBtn");
    btn.click();
} 
</script>

</body>
</html>