How can I access the dom tree of child window?

Question

I open a new window using the following code:

purchaseWin = window.open("Purchase.aspx","purchaseWin2", "location=0,status=0,scrollbars=0,width=700,height=400");

I want to access the dom tree of the purchaseWin, e.g.

purchaseWin.document.getElementById("tdProduct").innerHTML = "2";

It doesn't work. I can only do this:

purchaseWin.document.write("abc");

I also try this and it doesn't work too:

 $(purchaseWin.document).ready(function(){

     purchaseWin.$("#tdProduct").html("2");

   });

What should I do?

Southey

Answer 1

With jQuery, you have to access the contents of the document of your child window:

$(purchaseWin.document).ready(function () {
  $(purchaseWin.document).contents().find('#tdProduct').html('2');
});

Without libraries, with plain JavaScript, you can do it this way:

purchaseWin.onload = function () {
  purchaseWin.document.getElementById('tdProduct').innerHTML = '2';
};

I think that the problem was that you were trying to retrieve the DOM element before the child window actually loaded.

Tamarind

The plain Javascript version works. But jQuery version fails. I need to run the jQuery code manually in parent window to work. – Southey

Works in IE (not firefox): $(purchaseWin.document).ready(function () {$(purchaseWin.document).contents().find('#tdProduct').html('2');}); Works in FF (not IE): purchaseWin.onload = function () {$(purchaseWin.document).contents().find('#tdProduct').html('2');}; – Southey

See Gunni's response, using $(purchaseWin).load for the jQuery option works whereas the document ready event didn't. – Photon

Answer 2

Maybe the load event of jQuery works for you as this worked for me in a similar Problem, whereas the ready event did not work:

$(purchaseWin).load(function(){
    purchaseWin.$("#tdProduct").html("2");
});

Blat

New is that i use the .load event while the accepted answer uses the .ready event. For me that made a difference. – Blat

This is the only answer that gave me access to the dom of the child. – Stefanstefanac

Answer 3

You cannot access the document of a child window if you load a page that does not belong to the domain of the parent window. This is due to the cross-domain security built into Javascript.

Hockett

Answer 4

(function() {

  document.getElementById("theButton").onclick = function() {

    var novoForm = window.open("http://jsbin.com/ugucot/1", "wFormx", "width=800,height=600,location=no,menubar=no,status=no,titilebar=no,resizable=no,");
    novoForm.onload = function() {
      var w = novoForm.innerWidth;
      var h = novoForm.innerHeight;
      novoForm.document.getElementById("monitor").innerHTML = 'Janela: '+w+' x '+h;
    };
  };
})();

Brew