[html] Javascript warning and error of w3c

There are some javascript in below of the page:

 

< script type = " javascript " >
var test = 4 ;
if (test < 5 )
{
alert( " Test w3c " );
}
< / script>

When test the page in http://validator.w3.org/#validate_by_uri, we got the warning and error:

 

 

Line X, ColumnX: XML paring Error: StartTag: invalid element name
if(test < 5 )

Why?

 

 

We can get the reason here: http://www.w3.org/TR/2002/REC-xhtml1-20020801/#h-4.8

The resolved:

 

< script type = " javascript " >
/*<! [CDATA[*/
var test = 4 ;
if (test < 5 )
{
alert( " Test w3c " );
}
/*]] > */
< / script>

 

Add the "<![CDATA[" and "]]>" to the code!