Bug 28388 – Recent JS behavior changes breaks NASA homepage.

• Status: RESOLVED
• Resolution: FIXED
• Component: JavaScriptCore

[Jon]

It looks like a recent change in JS behavior has broken the main story section on the NASA homepage. The page briefly beachballs as the system deals with the JS errors encountered and then the inspector shows the errors increasing by several hundred when mousing over the story sections. All of them are similar to this:

TypeError: Result of expression 'element' [undefined] is not an object. 
TypeError: Result of expression 'expression.strip' [undefined] is not a function.
TypeError: Result of expression 't' [undefined] is not an object.
TypeError: Result of expression 'this.extractScripts' [undefined] is not a function.
TypeError: Result of expression 't' [undefined] is not an object.
TypeError: Result of expression 'this.extractScripts' [undefined] is not a function.
TypeError: Result of expression 'this.callback' [undefined] is not a function.

I'll add more information once I'm able to go through the nightlies and find when exactly this started.

[Patrick Mueller]

I'm not seeing this on nightly r47060, on my intel MBP.

Per IRC comment, the link I tried was: http://www.nasa.gov/home/index.html

[Jon]

When I say nightlies, I meant between the latest nightly (47291) and my current source build, r47357.

[Jon]

This bug also affect some the the apple.com functionality. But it seems fixed now (r47407), so I'm going to close it out. If I see it come back I'll reopen it.