Javascript isNull function

**Chrisch** · 11-11-2009

I need information on IsNull() in javascript. I know the function returns the null value but what are syntax need to declare. I want to check all the null value assign in the field. Can any one explain me the javascript isnull function with example.

**Zecho** · 11-11-2009

Check this example of javascript isnull function :

Code:

%
if IsNull(rs("field")) then
    sVar = ""
else
    sVar = rs("field")
end if
%>
<%
sVariable = "" & rs("field")
%>

**Walby** · 11-11-2009

Try this example of javascript isnull function :

Code:

<html>
<head>
<title> javascript isnull </title>
<script language="JavaScript" src="./dynapisrc/dynapi.js"></script>
<script language="Javascript">
dynapi.library.setPath('./dynapisrc/');
dynapi.library.include('dynapi.library');
dynapi.library.include('dynapi.functions');
dynapi.library.include('dynapi.api');
</script>
</head>
<body>
<font face="boldl" size="3">
<script>
var doc=document;
j=dynapi.functions;


doc.write('isNull: '+f.isNull('not null','is null')+'<br><br>');
</script>
</font>
</body>
</html>

**Aberto** · 11-11-2009

ISNULL() Replaces NULL with the specified replacement value, it can have 2 arguments, first is the field which is supposed to be checked whether it is NULL or not..Use the IsNull function to determine whether an expression contains a Null value.