javascript code not working when language="text/javascript" but working for language='Javascript'

Question

I have following working JavaScript code in my html page.

   <SCRIPT language='Javascript'>
           function isNumberKey(evt)
          {
             var charCode = (evt.which) ? evt.which : event.keyCode
             if (charCode > 31 && (charCode < 48 || charCode > 57))
                return false;

             return true;
          }         
       </SCRIPT>

But I heard language="javascript" is deprecated so tried changing language="text/javascript" with same code as below but not working.

<SCRIPT language="text/javascript">
      function isNumberKey(evt)
      {
         var charCode = (evt.which) ? evt.which : event.keyCode
         if (charCode > 31 && (charCode < 48 || charCode > 57))
            return false;

         return true;
      }
   </SCRIPT>

Could anyone please let me how to make the code workable in language="text/javascript" mode ?

http://stackoverflow.com/questions/2267476/html-script-tag-type-or-language-or-omit-both — Brett, Jan 07 '14 at 20:52
actually, you don't need either type or language, just `` since javascript is the default — Stephen Thomas, Jan 07 '14 at 20:53

score 6 · Answer 1 · answered Jan 07 '14 at 20:54

6

Even better (since it's shorter and easier to read):

<script>
    //Some script
</script>

From the spec, emphasis added:

The type attribute gives the language of the script or format of the data. If the attribute is present, its value must be a valid MIME type. The charset parameter must not be specified. The default, which is used if the attribute is absent, is "text/javascript".

answered Jan 07 '14 at 20:54

Stephen Thomas

13,843
2
32
53

Why better? please explain. – Rahil Wazir Jan 07 '14 at 20:55
@RahilWazir: Because in modern browsers, this will work. No need to worry about which attribute to add, because you need neither :) – gen_Eric Jan 07 '14 at 20:56
@RocketHazmat : what do you mean by MIME type ? – logan Jan 07 '14 at 20:57
1

@logan: http://en.wikipedia.org/wiki/Internet_media_type – gen_Eric Jan 07 '14 at 20:58

score 1 · Answer 2 · answered Jan 07 '14 at 20:53

1

Usually this is the right way:

<script type="text/javascript">
    //Some script
</script>

answered Jan 07 '14 at 20:53

tweray

1,002
11
18

score 1 · Answer 3 · answered Jan 07 '14 at 20:56

1

Try using:

<script type="text/javascript"></script>`

answered Jan 07 '14 at 20:56

Katpoes

209
1
11

javascript code not working when language="text/javascript" but working for language='Javascript'

3 Answers3