Filtering Array using $.grep() method

Hello everyone, I am going to share the code sample for filter the array using $.grep() method in jQuery 

Table of Contents

I. HTML 5 for input textbox
II. jQuery code for filter mobile number on textbox keyup.

HTML 5 Code Sample

<input id="mobileNumber" required pattern="\d{10}" validationmessage="Invalid mobile number; must be ten digits">

jQuery Code Sample

<script type="text/javascript">

    var userPhoneList = [];

  

    $(function () {

        filterPhoneNumbers();

    });

    function filterPhoneNumbers() {

        $.getJSON("../API/Connect/GetUserPhones/@userSession.UserID")

            .done(function (data) {

                if (data !== undefined && data !== null) {

                    if (data.length > 0) {

                        $.each(data, function (key, val) {

                            userPhoneList.push(parseInt(val.MobileNo));

                        });

                    }

                }

            });

    }

    $('#mobileNumber').keyup(function () {

        var mobile = $(this).val();

        var result = $.grep(subscriberPhones, function (mPho, index) {

            return mPho === parseInt(mobile);

        });

        if (result.length > 0) {

            alert('Mobile number already exist.');

        }

    });

</script>