Issues triggered by input text events

duolabmeng

<INPUT TYPE="TEXT" ID="ID1" NAME="ID1" SIZE="20" onchange="aaa();">

   Such a statement, after I input it by hand, the onchange event is triggered and execute aaa()
   But I use the program to change the value of ID1, such as this:
   
   document.getElementById('IDl').value='99999';
   The onchange event is not triggered. I tried several events, and when I wrote the value in the program, the event could not be triggered.
   I don't know if I can use the method of imitating events.
   Thank you experts for your advice.

cjj841112

onpropertychange

duolabmeng

Don't understand the meaning upstairs
Please advise in detail, thank you!

cjj841112

<INPUT TYPE="TEXT" ID="ID1" NAME="ID1" SIZE="20" onpropertychange="aaa();">

duolabmeng

Thank youcjj841112

  I interviewed in VS and used one TEXT plus two BUTTONs
  One BUTTON is a server control, and the other is an HTML control.
  HTML BUTTON fires a function to change the value of TEXT.
  onpropertychange event is fired

  But the server BUTTON control, modify the value of TEXT in the background, the foreground can display it immediately,
  The onpropertychange event is not fired

  Thank you for your advice, thank you