1310540 - Javascript can't recognize document.form1.elements["some_"+n].value

Status: RESOLVED INVALID

(Firefox :: Untriaged, defect)

Description

[Tomoo Nomura]

User Agent: Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Firefox/45.0
Build ID: 20160802213348

Steps to reproduce:

version 49.0.1 can't recognize the syntax document.form1.elements["some_"+0].value, while before 48.0.2 works fine.


Actual results:

<form name="form1" action="zzzz.phtml" method="post">
<input type="text" name="some_0" value="44">

var n=parseInt( document.form1.elements["some_"+0].value );
alert( "n="+n);

it shows "n=NaN"


Expected results:

it should show "n=44"

Comment 1

[Tooru Fujisawa [:arai]]

Can you provide a standalone testcase?

Comment 2

[Tomoo Nomura]

I'm sorry I found it is not a bug, but javascript's version problem.
String.replace( exp, rep, "g" ) becomes obsolete.
I changed it to String.replace( new RegExp( exp, "g"), rep ), and works correctly. 
Please close it.