Enumeration of the textContent property causes sites to display slowly in Internet Explorer

Applies to: Internet Explorer 11Internet Explorer 10Internet Explorer 9

Symptoms


This issue occurs in Internet Explorer 11, Internet Explorer 10, and Internet Explorer 9 if the site content interacts with the textContent property of one or more DOM elements.

Resolution


Update information

To resolve this problem, install the most recent cumulative security update for Internet Explorer. To do this, go to Microsoft Update.

For technical information about the most recent cumulative security update for Internet Explorer, go to the following Microsoft website:Note This update was first included in security update 2976627.

For more information about security update 2976627, click the following article number to view the article in the Microsoft Knowledge Base:
2976627 MS14-051: Cumulative security update for Internet Explorer: August 12, 2014

More Information


When you use the F12 Developer Tools in Internet Explorer, you can find the textContent DOM operation consumes the most exclusive time.

The textContent property is defined in the W3C DOM Level 3 Core specification. For more information about Internet Explorer support for the textContent property, see the following MSDN website: 

Status


Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.

References


See the terminology that Microsoft uses to describe software updates.