$(document).ready(function () { $("input[type=radio]").click(function () { $(this).closest('form').find("input[type=text]").val(this.value); }); });

 input[type=radio][checked=checked]{background:#000}

 <script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script> <form action="hello.php" name="form01" method="post"> <input type="hidden" name="productid" value="01" /> <input type="radio" name="price" value="1000" checked="checked">1000 <input type="radio" name="price" value="2000">2000 <input type="text" id="it1" name="pricevalue" value="1000"> </form> <form action="hello.php" name="form02" method="post"> <input type="hidden" name="productid" value="02" /> <input type="radio" name="price" value="6000" checked="checked">6000 <input type="radio" name="price" value="2400">2400 <input type="text" id="it2" name="pricevalue" value="6000"> </form> <form action="hello.php" name="form03" method="post"> <input type="hidden" name="productid" value="03" /> <input type="radio" name="price" value="500" checked="checked">500 <input type="radio" name="price" value="700">700 <input type="text" id="it3" name="pricevalue" value="500"> </form>