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JavaScript: Dynamically attaching events with parameterized functions

We can attach dynamically events with parameters in JavaScript

There are two basic accepted way to fire a function using a dynamic event handler:

Method 1

obj.onclick = handler_function;

  • No parameters are allowed in this method
  • Previous assignment of the event will be overwritten.


Method 2

obj.onclick= function()


other statements here


  • Used for multiple function firing or for firing a function with one or more parameters
  • Previous assignment for the event will be overwritten


Method 3

obj.attachEvent(“onclick”, function1)

  • Simple way to register multiple event handlers for the same event on one element.
  • Does not overwrite the previous assignments

The newly attached functions will be called in the sequence their of attachment


March 30, 2010 - Posted by | SharePoint Hack

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