javascript - (tornado)how can I pass argument to server when a button is pressed? -

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i'm new python tornado.i'm building web site when want send argument server pressing button,i don't know how catch on tornado. how know button pressed ?

a simple ajax request jquery can job :

class application(tornado.web.application):     """tornado web class. create routes used tornado_start"""      def __init__(self):         handlers = [             (r"/", index),             (r"/explicit_action_url/", actionhandler)         ] ...  class actionhandler(tornado.web.requesthandler):     def get(self):         print("button click")   class index(tornado.web.requesthandler):     def get(self):         self.render("index.html")

and in index.html

<button id="btn" type="button">click me</button> <script src="http://code.jquery.com/jquery-1.10.1.min.js"></script> <script>     $("#btn").click(function () {         $.ajax({             type: 'get',             url: "/explicit_action_url/",             success: function (data) {                 alert("success")             }         });     }); </script>

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