Throwing an Error : Error Exceptions : Development JAVASCRIPT DHTML TUTORIALS

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Throwing an Error



<HTML>
<HEAD>
<TITLE>Throw that error!</TITLE>
<SCRIPT> 
function throwError(errString) { 
   try { 
      throw new Error (42, errString); 
   } 
   catch(e){ 
      alert("Error number: " + e.number + "; Description: " + e.description) 
   } 
} 
</SCRIPT>
</HEAD>
<BODY>
<H1> 
Throw that error! 
</H1>
<FORM name="theForm">
<TABLE>
<TR>
<TD colspan=2> Enter text for the error: </TD>
<TD>
<INPUT type=text name=errText size=40>
</TD>
</TR>
<TR>
<TD colspan=2>
</TD>
<TD>
<INPUT type=button name=btnThrow value="Throw it!" onClick="throwError(document.theForm.errText.value);">
</TD>
</TR>
</TABLE>
</FORM>
</BODY>
</HTML>