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Run javascript code except it is inside a modal dialog

Want to run some javascript code everywhere, but not in a modal dialog. Because errors are occured, or this code is unnecessary i dialogs. Well here is a solution I have found after some experiments:

$(document).ready(function() {
  if (!window.location.href.match(/isdlg=1/i)) {
    onDocumentReadyExceptItIsInDialog();
  }
});

function onDocumentReadyExceptItIsInDialog() {}

This code checks with Regular Expressions if the url of the parent window contains IsDlg=1, if so nothing happens. In the usual case (not inside a dialog), the javascript code runs.

EDIT: after I wrote this I actually found that this is the way SharePoint itself does:

So now I update the previous function to this:

$(document).ready(function() {
  if (window.location.search.match(/[?&]isdlg=1/i)) {
    return;
  }
  onDocumentReadyExceptItIsInDialog();
});

function onDocumentReadyExceptItIsInDialog() {}

An alternative way to check if it is inside a modal dialog is not SharePoint-specific:

isInIFrame = (window.location != window.parent.location) ? true : false;

But what if it is some other frame element than a modal dialog…

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