Validate

<form method="POST" enctype="multipart/form-data" id="validate1">
                <div class="employerType">
                    <span style="font-size: 25px;">Company</span> &nbsp;<input type="radio" name="EmpType" id="CompanyTypeA" value="CompanyTypeA"> &nbsp; <span style="font-size: 25px;">Agency</span> &nbsp;<input type="radio" name="EmpType" id="CompanyTypeB" value="CompanyTypeB" required>
                </div>

                <div class="selectEmpType">
                        Select Employer Type
                    </div>

                <div class="num">
                    <input type="text" id="Number" name="Number" maxlength="35" placeholder="Number" style="width: 100%; height: 40px; font-size: 20px;" required>
                </div>

                <div class="noNumber">
                    Please enter a Number
                </div>

                <div class="wrongFormat">
                    Not a valid Number
                </div>

                <div class="check">
                    <button name="submit" style="font-size: 20px; height: 40px; width: 100%; text-align: center;">Check</button>
                </div>


form.addEventListener('submit',function(event)
        {
            event.preventDefault();
            alert();
        })