Microsofttechies/gist:3ed64b463c67d526a411 Secret

## gistfile1.html
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
    <title></title>
    <script src="http://code.jquery.com/jquery.js" type="text/javascript"></script>
    <script>
        $(function () {

            $("#btnSubmit").click(function () {
                var objCtx = SP.ClientContext.get_current();
                var user = objCtx.get_web().get_currentUser();
                var currentWeb = objCtx.get_web();
                objCtx.load(user);
                var objAllGroups = currentWeb.get_siteGroups();
                objCtx.load(objAllGroups);

                var objGroup = objAllGroups.getByName("MyGroup");
                objCtx.load(objGroup);

                var objGroupUsers = objGroup.get_users();
                objCtx.load(objGroupUsers);

                objCtx.executeQueryAsync(succF, failF);

                function succF(sender, args) {
                    var userExist = false;
                    var uEnum = objGroupUsers.getEnumerator();
                    while (uEnum.moveNext()) {
                        var guser = uEnum.get_current();
                        if (guser.get_id() == user.get_id()) {
                            userExist = true;
                            break;
                        }
                    }

                    if (userExist == true) {
                        console.log("User exist");
                    } else {
                        console.log("User Not exist");
                    }
                }

                function failF(sender, args) {
                    console.log("error");
                }
            });
        });

    </script>
</head>
<body>
    <button id="btnSubmit">Submit</button>

</body>
</html>
	<!DOCTYPE html>
	<html xmlns="http://www.w3.org/1999/xhtml">
	<head>
	<title></title>
	<script src="http://code.jquery.com/jquery.js" type="text/javascript"></script>
	<script>
	$(function () {

	$("#btnSubmit").click(function () {
	var objCtx = SP.ClientContext.get_current();
	var user = objCtx.get_web().get_currentUser();
	var currentWeb = objCtx.get_web();
	objCtx.load(user);
	var objAllGroups = currentWeb.get_siteGroups();
	objCtx.load(objAllGroups);

	var objGroup = objAllGroups.getByName("MyGroup");
	objCtx.load(objGroup);

	var objGroupUsers = objGroup.get_users();
	objCtx.load(objGroupUsers);

	objCtx.executeQueryAsync(succF, failF);

	function succF(sender, args) {
	var userExist = false;
	var uEnum = objGroupUsers.getEnumerator();
	while (uEnum.moveNext()) {
	var guser = uEnum.get_current();
	if (guser.get_id() == user.get_id()) {
	userExist = true;
	break;
	}
	}

	if (userExist == true) {
	console.log("User exist");
	} else {
	console.log("User Not exist");
	}
	}

	function failF(sender, args) {
	console.log("error");
	}
	});
	});

	</script>
	</head>
	<body>
	<button id="btnSubmit">Submit</button>

	</body>
	</html>