document getElementById btnid disabled is not working in firefox and chrome

Question

I m using JavaScript for disabling a button  Works fine in IE but not in FireFox and chrome  here is the script what I m working on   function disbtn e         if   someCondition    true            document getElementById  btn1   disabled   true        else          document getElementById  btn1   disabled   false          And in my html I have     lt input type  button  id  btn1  value  submit    gt

User · Answer

stay true to native  Boolean  property support and its powerful syntax like    elem  disabled   condition   true   false    done   and for our own good collective coding experience  -please insist on others to support it  as well

User · Answer

There are always weird issues with browser support of getElementById  try using the following instead      document getElementsBySelector are part of the prototype js library available at http   api prototypejs org dom Element prototype getElementsBySelector   function disbtn e         if   someCondition    true             document getElementsBySelector   btn1   0  setAttribute  disabled    disabled          else           document getElementsBySelector   btn1   0  removeAttribute  disabled                  Alternatively  embrace jQuery where you could simply do this   function disbtn e         if   someCondition    true                 btn1   attr  disabled    disabled          else               btn1   removeAttr  disabled

User · Answer

use setAttribute   and removeAttribute    function disbtn e         if   someCondition    true            document getElementById  btn1   setAttribute  disabled   disabled          else          document getElementById  btn1   removeAttribute  disabled              SEE DEMO

User · Answer

Try setting the disabled attribute directly   if   someCondition    true        document getElementById  btn1   setAttribute  disabled    disabled      else      document getElementById  btn1   removeAttribute  disabled

User · Answer

Another alternative     document formname elementname disabled true   Work on FF and IE

User · Answer

I ve tried all the possibilities  Nothing worked for me except the following   var element   document querySelectorAll  input id btn1      element 0  setAttribute  disabled  true

User · Answer

Some time some javascript functions does not work on some specific browser  I would suggest you to start using JQuery  which gives you normalized JS  taking care of different browser requirement      btn1   each function        this disabled   false

[javascript] document.getElementById('btnid').disabled is not working in firefox and chrome

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