November 19, 2008 02:30am pst

1. mtz1of4 147,068
2. war1 139,875
3. b0lsc0tt 105,180
4. hielo 66,090
5. Kravimir 59,367
6. mplungjan 34,845
7. Steggs 32,740
8. jcimarron 20,574
9. scrathcyboy 20,084
10. GreenGho... 16,776
11. eoinosullivan 13,182
12. VirusMinus 11,280
13. TName 9,500
14. rpggamer... 9,100
15. araim 8,250
16. nexusnation 8,000
17. rindi 7,952
18. LordOfPo... 7,800
19. strung 6,582
20. strobbe 6,500
21. MMDevelo... 6,475
22. torimar 6,200
23. HackneyCab 6,100
24. Rouchie 6,000
24. kayahr 6,000
24. IndiGenus 6,000
24. gwkg 6,000

1. mtz1of4 282,409
2. war1 239,018
3. b0lsc0tt 137,509
4. TName 91,555
5. hielo 71,090
6. Kravimir 59,367
7. mplungjan 58,620
8. Steggs 46,765
9. GreenGho... 29,256
10. VirusMinus 23,980
11. jcimarron 20,574
12. scrathcyboy 20,084
13. Zvonko 17,450
14. eoinosullivan 17,182
15. Sheharya... 16,700
16. rindi 12,952
17. basicinsti... 12,100
18. Eternal_S... 11,466
19. mreuring 10,341
20. jason1178 10,000
21. Badotz 9,800
22. hernst42 9,500
23. darron_c... 9,250
23. araim 9,250
25. IndiGenus 9,200

07.19.2008 at 06:51AM PDT, ID: 23579031

	[x] Attachment Details

[x]

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9.1

Strange JavaScript Regex Behavior in Firefox and Opera After KeyUp Event

Asked by wwarby in Firefox Web Browser, JavaScript, Regular Expressions

Tags: Mozill, Firefox, 3, JavaScript, Firefox, bug,Regex,regular expressions

Create a page containing the attached code snippet and view the page in Firefox (or Opera, they both do this, but not IE or Safari). Type "8" (or any other digit) followed by a single letter, say "e", repeated several times. Each time you hit the "e" key, the result of the RegExp test that gets printed back into the second text box will alternate between true/false. WHY???

This simplified test case demonstrates what I think is a bug, but one that appears in current versions of two major browsers. The regular expression is testing for the existence of a digit. If I put one digit at the start of the test string, no quantity of subsequent characters should alter the result. This is one example of many - I have found that many regex patterns return unexpected results when used to test the value of a text box following the KEYUP event.

If you place a breakpoint on the return line and copy the return expression into the Firebug console it will always return true, even though executing that same line immediately after returns false.

The answer I am looking for is either an explanation of this behaviour that would convince me it isn't a bug, or a practical workaround that makes the second box always return true. Meanwhile I've reported it on BugZilla.Start Free Trial

         
           
           
             <html>
	<body>
		<input type="text" id="foo" onkeyup="javascript:document.getElementById('bar').value = hasDigits(this.value);" />
		<input type="text" id="bar" />
		<script type="text/javascript">
			function hasDigits(p) {
				return /\d/g.test(p);
			}
		</script>
	</body>
</html>

           
         

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20080716-EE-VQP-32 / EE_QW_2_20070628

Strange JavaScript Regex Behavior in Firefox and Opera After KeyUp Event

Asked by wwarby in Firefox Web Browser, JavaScript, Regular Expressions

Tags: Mozill, Firefox, 3, JavaScript, Firefox, bug,Regex,regular expressions

About this solution