Bug 18970 – Numerically named input fields cause document.forms loop problems

• Component: WebCore JavaScript
• Status: RESOLVED FIXED

[Dave Kiger]

Javascript:

<script type="text/javascript">

function showMe()
{
	var varString = '';
	var element = '';
	var oneForm = document.forms["test_form"];
	var totalElements = oneForm.length;
	for (var increment = 0; increment < totalElements; increment++)
	{
		element = oneForm[increment];
		if (element.tagName == "INPUT" || element.tagName == "TEXTAREA")
		{
			if (	(element.type == 'checkbox' && element.checked) ||
					(element.type == 'radio' && element.checked) ||
					element.type == 'text' ||
					element.type == 'password' ||
					element.type == 'hidden'	)
			{
				varString += element.name + "=" + element.value + "\n&";
			}
		}
		else if (element.tagName == "SELECT")
		{
			varString += element.name + "=" + element.options[element.selectedIndex].value + "\n&";
		}
	}
	varString += "is_ajax=yes";
    document.getElementById('results').value = varString;
}

</script>

HTML:

<form action="testme.html" method="post" name="test_form" id="test_form">
<input type="hidden" name="field_000" value="value_000">
<input type="hidden" name="field_001" value="value_001">
<input type="hidden" name="field_002" value="value_002">
<input type="hidden" name="field_003" value="value_003">
<input type="hidden" name="field_004" value="value_004">
<input type="hidden" name="field_005" value="value_005">
<input type="hidden" name="field_006" value="value_006">
<input type="hidden" name="field_007" value="value_007">
<input type="hidden" name="field_008" value="value_008">
<input type="hidden" name="field_009" value="value_009">
<input type="hidden" name="field_009" value="value_009">
<input type="hidden" name="field_010" value="value_010">
<input type="hidden" name="field_011" value="value_011">
<input type="hidden" name="field_012" value="value_012">
<input type="hidden" name="field_013" value="value_013">
<input type="hidden" name="field_014" value="value_014">
<input type="hidden" name="field_015" value="value_015">
<input type="hidden" name="field_016" value="value_016">
<input type="hidden" name="field_017" value="value_017">
<input type="hidden" name="field_018" value="value_018">
<input type="hidden" name="field_019" value="value_019">
<input type="hidden" name="field_020" value="value_020">
<input type="hidden" name="field_021" value="value_021">
<input type="hidden" name="field_022" value="value_022">
<input type="hidden" name="field_023" value="value_023">
<input type="hidden" name="field_024" value="value_024">
<input type="hidden" name="field_025" value="value_025">
<input type="hidden" name="field_026" value="value_026">
<input type="hidden" name="field_027" value="value_027">
<input type="hidden" name="field_028" value="value_028">
<input type="hidden" name="field_029" value="value_029">
<input type="hidden" name="field_030" value="value_030">
<input type="hidden" name="field_031" value="value_031">
<input type="hidden" name="field_032" value="value_032">
<input type="hidden" name="field_033" value="value_033">
<input type="hidden" name="field_034" value="value_034">
<input type="hidden" name="field_035" value="value_035">
<input type="hidden" name="field_036" value="value_036">
<input type="hidden" name="field_037" value="value_037">
<input type="hidden" name="field_038" value="value_038">
<input type="hidden" name="field_039" value="value_039">
<input type="hidden" name="field_040" value="value_040">
<input type="hidden" name="field_041" value="value_041">
<input type="hidden" name="field_042" value="value_042">
<input type="hidden" name="field_043" value="value_043">
<input type="hidden" name="field_044" value="value_044">
<input type="hidden" name="0" value="0">
<input type="hidden" name="1" value="0">
<input type="hidden" name="2" value="2">
<input type="hidden" name="3" value="0">
<input type="hidden" name="4" value="0">
<input type="hidden" name="5" value="0">
<input type="hidden" name="6" value="0">
<input type="hidden" name="7" value="0">
<input type="hidden" name="8" value="0">
<input type="hidden" name="9" value="0">
<input type="hidden" name="10" value="0">
<input type="hidden" name="11" value="0">
<input type="hidden" name="field_045" value="value_045">
<input type="hidden" name="field_046" value="value_046">
<input type="hidden" name="field_047" value="value_047">
<input type="hidden" name="field_048" value="value_048">
<input type="hidden" name="field_049" value="value_049">
<input type="hidden" name="field_050" value="value_050">
<input type="hidden" name="field_051" value="value_051">
<input type="hidden" name="field_052" value="value_052">
<input type="hidden" name="field_053" value="value_053">
<input type="hidden" name="field_054" value="value_054">
<input type="hidden" name="field_055" value="value_055">
<input type="hidden" name="field_056" value="value_056">
<input type="hidden" name="field_057" value="value_057">
<input type="hidden" name="field_058" value="value_058">
<input type="hidden" name="field_059" value="value_059">
<input type="hidden" name="field_060" value="value_060">
<input type="hidden" name="field_061" value="value_061">
<input type="hidden" name="field_062" value="value_062">
<input type="hidden" name="field_063" value="value_063">
<input type="hidden" name="field_064" value="value_064">
<input type="hidden" name="field_065" value="value_065">
<input type="hidden" name="field_066" value="value_066">
<input type="hidden" name="field_067" value="value_067">
<input type="hidden" name="field_068" value="value_068">
<input type="hidden" name="field_069" value="value_069">
<input type="hidden" name="field_070" value="value_070">
<textarea cols="50" rows="30" name="results" id="results"></textarea><br><br>
<button type="button" onClick="showMe();">Test Me!</button>
</form>

Expected Results:

field_000=value_000
&field_001=value_001
&field_002=value_002
&field_003=value_003
&field_004=value_004
&field_005=value_005
&field_006=value_006
&field_007=value_007
&field_008=value_008
&field_009=value_009
&field_009=value_009
&field_010=value_010
&field_011=value_011
&field_012=value_012
&field_013=value_013
&field_014=value_014
&field_015=value_015
&field_016=value_016
&field_017=value_017
&field_018=value_018
&field_019=value_019
&field_020=value_020
&field_021=value_021
&field_022=value_022
&field_023=value_023
&field_024=value_024
&field_025=value_025
&field_026=value_026
&field_027=value_027
&field_028=value_028
&field_029=value_029
&field_030=value_030
&field_031=value_031
&field_032=value_032
&field_033=value_033
&field_034=value_034
&field_035=value_035
&field_036=value_036
&field_037=value_037
&field_038=value_038
&field_039=value_039
&field_040=value_040
&field_041=value_041
&field_042=value_042
&field_043=value_043
&field_044=value_044
&0=0
&1=0
&2=2
&3=0
&4=0
&5=0
&6=0
&7=0
&8=0
&9=0
&10=0
&11=0
&field_045=value_045
&field_046=value_046
&field_047=value_047
&field_048=value_048
&field_049=value_049
&field_050=value_050
&field_051=value_051
&field_052=value_052
&field_053=value_053
&field_054=value_054
&field_055=value_055
&field_056=value_056
&field_057=value_057
&field_058=value_058
&field_059=value_059
&field_060=value_060
&field_061=value_061
&field_062=value_062
&field_063=value_063
&field_064=value_064
&field_065=value_065
&field_066=value_066
&field_067=value_067
&field_068=value_068
&field_069=value_069
&field_070=value_070
&is_ajax=yes

Actual Results:

0=0
&1=0
&2=2
&3=0
&4=0
&5=0
&6=0
&7=0
&8=0
&9=0
&10=0
&11=0
&field_011=value_011
&field_012=value_012
&field_013=value_013
&field_014=value_014
&field_015=value_015
&field_016=value_016
&field_017=value_017
&field_018=value_018
&field_019=value_019
&field_020=value_020
&field_021=value_021
&field_022=value_022
&field_023=value_023
&field_024=value_024
&field_025=value_025
&field_026=value_026
&field_027=value_027
&field_028=value_028
&field_029=value_029
&field_030=value_030
&field_031=value_031
&field_032=value_032
&field_033=value_033
&field_034=value_034
&field_035=value_035
&field_036=value_036
&field_037=value_037
&field_038=value_038
&field_039=value_039
&field_040=value_040
&field_041=value_041
&field_042=value_042
&field_043=value_043
&field_044=value_044
&0=0
&1=0
&2=2
&3=0
&4=0
&5=0
&6=0
&7=0
&8=0
&9=0
&10=0
&11=0
&field_045=value_045
&field_046=value_046
&field_047=value_047
&field_048=value_048
&field_049=value_049
&field_050=value_050
&field_051=value_051
&field_052=value_052
&field_053=value_053
&field_054=value_054
&field_055=value_055
&field_056=value_056
&field_057=value_057
&field_058=value_058
&field_059=value_059
&field_060=value_060
&field_061=value_061
&field_062=value_062
&field_063=value_063
&field_064=value_064
&field_065=value_065
&field_066=value_066
&field_067=value_067
&field_068=value_068
&field_069=value_069
&field_070=value_070
&is_ajax=yes

[Dave Kiger]

Created attachment 21039 [details]
Example page which demonstrates bug

[Alexey Proskuryakov]

Created attachment 27729 [details]
proposed fix

[Darin Adler]

Comment on attachment 27729 [details]
proposed fix

r=me

[Alexey Proskuryakov]

Committed revision 41131.