567738 - Javascript alert() faulty including inability to move dialog box

Reporter

Description

•

15 years ago

User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.2.3) Gecko/20100401 Firefox/3.6.3 ( ) Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.2.3) Gecko/20100401 Firefox/3.6.3 ( ) On Mozilla Firefox 3.6.3, a modal-dialog box generated by alert() *before the page has finished loading* in Javascript will not allow the user to move the dialog box. Also, the dialog box sometimes require multiple clicks on OK to activate. The confirm() dialog box has the same problem. Firefox 3.5.9 does not have this problem. This build works: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.1.9) Gecko/20100315 Firefox/3.5.9 ( ) I have tried putting script containing the alert() code in different places -- in an external .js file, in the HTML <HEAD> section, in-line between <SCRIPT> tags and in script activated by the <BODY onLoad="xxx"> attribute. In all cases the problem surfaces by the second invocation. One severe side effect of this bug is what happens when you have another Windows application showing in front of the Firefox window when Firefox is in this failure state: Clicking on that other application does not give it focus! Instead you have to click on the other application's icon in the taskbar. Reproducible: Always Steps to Reproduce: 1. Create a web page like so: <head> </head> <body> <form> <input type='submit' value='Try again after clicking here' /> </form> <script>alert("try and move this window");</script> </body> 2. Load the web page into the browser. 3. When you see the dialog box, click OK 4. Press the submit button 5. When you see the dialog box again, try moving it around the screen. If it works, try moving it for a bit longer - say 10 seconds. Then try clicking OK and see if it responds. Actual Results: When you get to step 5 above, if you try and move the dialog box around, it might work for a while and then Firefox will freeze. In my simple test code above, I can move the dialog box before it freezes, but in the bigger web application I am working on, I can't move the window at all, though I can usually press OK. You may even notice mouse movement being restricted. You may be able to regain control of Firefox by switching to another Windows application by pressing CTRL+ESC and then switching back with ALT+TAB. Expected Results: Dialog box should move around freely without freezing. When you click OK (or the close button on the dialog box) it should dismiss the dialog box immediately. You might like to experiment by adding the additional line: <input type='submit' value='Try again after clicking here' /> to the form in the test code above. This is only a hunch, but is this bug due to the new implementation of "DEFER" for scripts in Gecko 1.9.2? https://developer.mozilla.org/En/HTML/Element/Script