| How to Refer
Current Page Content in JSP
How to refer current page content
in jsp? I am making a program which add two number which are in textbox1
and textbox2 then when I click on add button sum of two number should be
display in third textbox.
Assuming that the name attributes
of your textboxes are textbox1, textbox2, and textbox3, and your form's
name attribute is myForm:
In the page <HEAD> section:
<SCRIPT type="text/javascript">
function
add2 () {
var base = document.myForm;
base.textbox3.value = base.textbox1.value + base.textbox2.value;
}
</SCRIPT>
In textbox1 and textbox2, add this
attribute:
onBlur="add2 ()"
This means that the JavaScript
function will be called whenever the user finishes entering data in either
textbox.
It depends on what you're trying
to do.
If you are doing something on the
client side, refer to the field in
Javascript (which, BTW, has *NOTHING*
to do with Java) as
document.formname.textname.value
(replace formname and textname
with the names of the <FORM> and <INPUT type="text"> tags)
If you want to setup an element,
do something like this in your JSP:
<INPUT type="text" name="myField"
value="<%=textValue %>" >
where textValue is a Java expression
that can be evaluated as a String.
If you want to retrieve the value
of an element, use this in your servlet code:
String fldVal = request.getParameter
("myField");
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