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POWhy this javascript not enabling text boxes using check box?
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  1. POWhy this javascript not enabling text boxes using check box?
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    copied!<p>Again in problem Actually I have following jsp code in which I have few text boxes which I have made disabled by using property disabled="disabled". Now problem is each record that I will get from database in each text box using iterator which iterates values added from databse in arraylist.If database return more than one record then using that check box I can enable textboxes but if databse resultset return only one record then I am unable to enable textboxes and throws following ERROR: Message: 'document.f1.chk' is null or not an object Line: 26 Char: 10 Code: 0</p> <pre><code>&lt;script type="text/javascript"&gt; function enable() { for(i=0;i&lt;document.preapp.chk.length;i++) { if(document.preapp.chk[i].checked==true) { document.preapp.id[i].disabled=false; document.preapp.vname[i].disabled=false; document.preapp.comp[i].disabled=false; document.preapp.cont[i].disabled=false; document.preapp.wtm[i].disabled=false; document.preapp.intime[i].disabled=false; } else if(document.preapp.chk[i].checked==false) { document.preapp.id[i].disabled=true; document.preapp.vname[i].disabled=true; document.preapp.comp[i].disabled=true; document.preapp.cont[i].disabled=true; document.preapp.wtm[i].disabled=true; document.preapp.intime[i].disabled=true; } } } &lt;/script&gt; &lt;CENTER&gt;&lt;a href="../vm/form.jsp "&gt;Back to Search&lt;/a&gt;&lt;/CENTER&gt; &lt;form method="post" action="" name="preapp"&gt; &lt;table border="1" align="center" width="100%"&gt; &lt;% Iterator itr; try { ArrayList al=(ArrayList)request.getAttribute("sq"); int i=0; for(itr=al.iterator();itr.hasNext();) { i=i+1; %&gt; &lt;tr&gt; &lt;td&gt;&lt;/td&gt;&lt;td&gt;&lt;input type="checkbox" name="chk" onclick="enable(this)" &gt;&lt;/td&gt;&lt;/tr&gt;&lt;/tr&gt; &lt;tr&gt;&lt;td&gt;Id&lt;/td&gt;&lt;td&gt;&lt;input type="text" name="id" value="&lt;%=itr.next()%&gt;" disabled="disabled" size="100%"&gt;&lt;/td&gt;&lt;/tr&gt; &lt;tr&gt;&lt;td&gt;Visitor Name&lt;/td&gt;&lt;td&gt;&lt;input type="text" name="vname" value="&lt;%=itr.next()%&gt;" disabled="disabled" size="100%"&gt;&lt;/td&gt;&lt;/tr&gt; &lt;tr&gt;&lt;td&gt;Comapny&lt;/td&gt;&lt;td&gt;&lt;input type="text" name="comp" value="&lt;%=itr.next()%&gt;" disabled="disabled" size="100%"&gt;&lt;/td&gt;&lt;/tr&gt; &lt;tr&gt;&lt;td&gt;Contact&lt;/td&gt;&lt;td&gt;&lt;input type="text" name="cont" value="&lt;%=itr.next()%&gt;" disabled="disabled" size="100%"&gt;&lt;/td&gt;&lt;/tr&gt; &lt;tr&gt;&lt;td&gt;Meeting Scheduled With&lt;/td&gt;&lt;td&gt;&lt;input type="text" name="wtm" value="&lt;%=itr.next()%&gt;" disabled="disabled" size="100%"&gt;&lt;/td&gt;&lt;/tr&gt; &lt;tr&gt;&lt;td&gt;Entry Made On&lt;/td&gt;&lt;td&gt;&lt;input type="text" name="intime" value="&lt;%=itr.next()%&gt;" disabled="disabled" size="100%"&gt;&lt;/td&gt;&lt;/tr&gt; &lt;tr&gt;&lt;td&gt;&lt;/td&gt; &lt;/tr&gt; &lt;tr&gt; &lt;/tr&gt; &lt;% } } catch(Exception e) { e.printStackTrace(); System.out.println(e.getMessage()); } %&gt; </code></pre> <p>How Do solve this problem? please help me out!</p>
 

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