159257 2016-06-29 03:48:09 -0700 console.log doesn't display object correctly if followed by delete 2017-07-11 11:57:42 -0700 1 1 1 Unclassified WebKit Web Inspector WebKit Nightly Build Unspecified Unspecified RESOLVED WORKSFORME InRadar P2 Normal --- 1 zajec5 webkit-unassigned inspector-bugzilla-changes joepeck webkit-bug-importer oldest_to_newest 1206353 0 282338 zajec5 2016-06-29 03:48:09 -0700 Created attachment 282338 Test case If we log object right before deleting one of its properties a wrong version appears in the console. Example: var test = {}; test.foo = {}; test.foo.bar = "Lorem ipsum"; console.log(test); delete test.foo.bar; Logged object doesn't have "bar" property when using: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.21 (KHTML, like Gecko) rekonq/2.3.2 Safari/537.21 In the past we already had some problem with displaying objects with console.log (#35801) it looks like similar issue (does it help to find a solution?). 1206617 1 webkit-bug-importer 2016-06-29 20:04:26 -0700 <rdar://problem/27097304> 1206618 2 joepeck 2016-06-29 20:10:26 -0700 This is expected behavior. When Web Inspector is open, it provides a preview/snapshot of what the object was that was logged in case the object changes. For large objects, when expanded, you see the live, current data. But for simple objects, when logged, we provide the snapshots. In this particular case, you logged a simple JSON stringifyable object, and the console message includes the complete description of the object at the time it was logged. That would be what I expect. Is this causing you an issue in some more realistic situation? 1206619 3 joepeck 2016-06-29 20:12:16 -0700 To expand on my last comment. When Web Inspector is closed, it does not do this previewing/snapshotting behavior. The performance overhead of console methods is a minimum when Web Inspector is closed. 282338 2016-06-29 03:48:09 -0700 2016-06-29 03:48:09 -0700 Test case test.html text/html 384 zajec5 PCFET0NUWVBFIGh0bWw+CjxodG1sPgoJPGhlYWQ+CgkJPG1ldGEgY2hhcnNldD0iVVRGLTgiIC8+ CgkJPHRpdGxlPmNvbnNvbGUubG9nIGFuZCBkZWxldGU8L3RpdGxlPgoJPC9oZWFkPgoJPGJvZHk+ CgkJPHA+T3BlbiBicm93c2VyIGNvbnNvbGUuIFlvdSBzaG91bGQgc2VlIGZvbGxvd2luZyBvYmpl Y3QgdGhlcmU6PC9wPgoJCTxwcmU+ewoJZm9vOiB7CgkJYmFyOiAiTG9yZW0gaXBzdW0iCgl9Cn08 L3ByZT4KCQk8c2NyaXB0PgoJCXZhciB0ZXN0ID0ge307CgkJdGVzdC5mb28gPSB7fTsKCQl0ZXN0 LmZvby5iYXIgPSAiTG9yZW0gaXBzdW0iOwoJCWNvbnNvbGUubG9nKHRlc3QpOwoJCWRlbGV0ZSB0 ZXN0LmZvby5iYXI7CgkJPC9zY3JpcHQ+Cgk8L2JvZHk+CjwvaHRtbD4K