Need sample code for link esp8266 to/from webpage ap and/or sta mode

small example code needed for esp8266 send/receive data to/from webpage. get post ajax websocket ascii string both ways esp8266 button send string "hello from esp" to webpage <span id "esp8266">from</span> include send ascii string every minute webpage <button onclick = "sendesp("on")>send</button> to esp to turn on led (not 1/0 but =="on" or =="off" include buttom sending value from <input type=text