Run ยป
<!DOCTYPE html> <html> <head> <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script> </head> <body> <input type="text" class="test1"><br><br> <input type="text" class="test2"><br><br> <input type="text" class="test3"><br><br> <select id="car_type"> <option value="volvo">111</option> <option value="saab">222</option> <option value="mercedes">333</option> <option value="audi">444</option> </select> <script> $("#car_type").change(function() { $(".test2").val(""); }); </script> </body> </html>