java script not working in some browsers

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Hi All,
I have script like this:
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<script type="text/javascript">
        function count(txt)
       {
          var textchar='<%= TextBox2.MaxLength %>';
          var textbox=document.getElementById(txt);
          var lbl=document.getElementById('<%= Counlbl.ClientID %>');
          if(textbox.value.length>textchar)
          {
          textbox.value=textbox.value.substrung(0,textchar);
          }
          lbl.innerText=textchar-textbox.value.length+" Characters remaining..";
       }
   </script>

This script working in internet explore but not working in Mozilla Firefox and also i put max length as 120 characters it raises exception after crossing length

1.How can i prevent this exception
2.How can i make this script to work in Firefox.

Can any one please help me.

Thanks in Advance

[Edit - fixed PRE block]

Posted 10-Jul-11 4:28am

tulasiram3975

Updated 10-Jul-11 18:33pm

Ramalinga Koushik

v3

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Comments

thatraja 10-Jul-11 15:31pm

Always mention the error message :(

tulasiram3975 9-Apr-12 6:01am

Am not using try catch thats why am not able show you what the exception is..

2 solutions

Solution 1

question 1: you can use try...catch... to prevent the exception
http://www.w3schools.com/js/js_try_catch.asp[^]

you also can seek redress at google
http://www.google.com/search?q=javascript+exception+handling[^]

question 2: you can use jquery lib in you script. It's an excellent js lib and cross brower.
http://jquery.com/[^]

Posted 10-Jul-11 5:16am

Thinking Stone1

Updated 10-Jul-11 22:14pm

v3

Comments

tulasiram3975 10-Jul-11 15:31pm

Thank You....

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Graham Breach · Accepted Answer · 2011-07-10T09:09:00

Solution 2

There are a couple of things to change:

1. "substrung" should be "substring"

2. use "innerHTML" instead of "innerText" to work in Firefox too.

You didn't say what the exception is, so this might not solve your actual problem.

Posted 10-Jul-11 9:09am

Graham Breach

Comments

tulasiram3975 10-Jul-11 15:31pm

Thanks You Sir Solves The Problem