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Unable to get property 'createRange' of undefined or null reference

Tags:

javascript

The following code, which worked well right up until I upgraded to windows 8.1 / Internet Explorer 11, is now throwing an error: "Unable to get property 'createRange' of undefined or null reference"

var SelectedData = window.external.menuArguments.document.selection.createRange().text;

Is there a fix / work around for this?

* Question updated below with newer code that is still not working ....

<html><head><title>-</title><script type="text/JScript">
function Launch()
{
var TheSelection = document.getSelection();
if(TheSelection != null)
{

.... do  a bunch of stuff

}
window.close();
}
</script></head><body onload="Launch();" </body></html>

I have also tried window.getselection; window.getselection(); window.getselection().tostring();

none of these seem to work ...???

like image 663
Rob Avatar asked Nov 03 '13 00:11

Rob


1 Answers

The documentation for document.selection says right at the top:

selection is no longer supported. Starting with Internet Explorer 11, use getSelection. For info, see Compatibility changes.

Change document.selection.createRange().text to document.getSelection().

The problem was exactly what I predicted. You are calling createRange() on a null or undefined reference. Specifically, document.selection is undefined. The error message said exactly what was wrong.

like image 172
Raymond Chen Avatar answered Nov 03 '22 02:11

Raymond Chen