MSIE and addEventListener Problem in Javascript

Question

document getElementById  container   addEventListener  copy  beforecopy false      In Chrome   Safari  the above will run the  beforecopy  function when the content on the page is being copied  MSIE is supposed to support this functionality as well  but for some reason I m getting this error       Object doesn t support this property or method    Now  it s my understanding that Internet Explorer won t play with the body node  but I would have thought providing a node by ID would work fine  Does anyone have any ideas about what I m doing wrong  Thanks in advance      Bonus points for anyone who can tell me what the 3rd parameter  False  is good for

User · Answer

As PPK points out here  in IE you can also use  e cancelBubble   true

User · Answer

Internet Explorer  IE8 and lower  doesn t support addEventListener       It has its own event model using the attachEvent method  You could use some code like this   var element   document getElementById  container    if  document addEventListener       element  addEventListener  copy   beforeCopy  false      else if  el attachEvent       element  attachEvent  oncopy   beforeCopy       Though I recommend avoiding writing your own event handling wrapper and instead use a JavaScript framework  such as jQuery  Dojo  MooTools  YUI  Prototype  etc  and avoid having to create the fix for this on your own   By the way  the third argument in the W3C model of events has to do with the difference between bubbling and capturing events  In almost every situation you ll want to handle events as they bubble  not when they re captured  It is useful when using event delegation on things like  focus  events for text boxes  which don t bubble

User · Answer

try adding    lt meta http-equiv  X-UA-Compatible  content  IE edge  gt     right after the opening head tag

User · Answer

As of IE11  you need to use addEventListener  attachEvent is deprecated and throws an error

User · Answer

In case you are using JQuery 2 x then please add the following in the   lt html gt      lt head gt         lt meta http-equiv  X-UA-Compatible  content  IE edge     gt      lt  head gt      lt body gt              lt  body gt   lt  html gt    This worked for me

User · Answer

The problem is that IE does not have the standard addEventListener method  IE uses its own attachEvent which does pretty much the same   Good explanation of the differences  and also about the 3rd parameter can be found at quirksmode

User · Answer

Using  lt meta http-equiv  X-UA-Compatible  content  IE 9  gt   IE9  does support addEventListener by removing the  on  in the event name  like this    var btn1   document getElementById  btn1     btn1 addEventListener  mousedown   function        console log  mousedown

User · Answer

In IE you have to use attachEvent rather than the standard addEventListener   A common practice is to check if the addEventListener method is available and use it  otherwise use attachEvent   if  el addEventListener     el addEventListener  click   modifyText  false      else if  el attachEvent     el attachEvent  onclick   modifyText       You can make a function to do it   function bindEvent el  eventName  eventHandler      if  el addEventListener       el addEventListener eventName  eventHandler  false        else if  el attachEvent       el attachEvent  on  eventName  eventHandler                bindEvent document getElementById  myElement     click   function        alert  element clicked          You can run an example of the above code here   The third argument of addEventListener is useCapture  if true  it indicates that the user wishes to initiate event capturing

[javascript] MSIE and addEventListener Problem in Javascript?

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