200603301018AJAX深度歷險6-AJAX基本流程圖

now ,I will show you the AJAX  basic flow map.

  1. Whether the  XMLHttpRequest object create 
                                         
  2.  open  method (the POST and the GET, the URL, same period or the  asynchronism which is requested and so on appointment)
                                          
  3. send method (data transmission)
                                          
                                < Server side >
                                        
  4. the  onreadystatechange event (other than the ie the call-back also the  onload can use (sending and receiving state changes, the  event which is started)
                                       
  5. the readyState property (the value which displays sending and receiving state, with 4 completion of reception.  If onload unnecessary. 
                                       
  6. responseText or responsecXml property (reception data)
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