Getting value from function

melvinoyh · #1 (**permalink**) May 26th, 2006, 04:15

for example this function get a value from a textbox and calculate and return the value to another textbox. this example can work.
-------------------------------------
<script type="text/javascript">
function chkBreakdown(){
myForm=document.brk
total=50*myForm.brkID.value
myForm.brk_total.value=total;
}
</script>
<html>
<body>
<form name="brk">
<input type="text" name="brkID" value="0" size="3" maxlength="3" onblur="chkBreakdown()">
<input type="text" name="brk_total">
</form>
</body>
</html>
------------------------------------------
now my problem is for example below:
Vector wp = new Vector();
Vector ln = new Vector();
<script type="text/javascript">
function chkBreakdown(wp,ln,la){
myForm=document.brk
total=wp+ln+la+*myForm.brkID<%=c%>.value <--is this correct or not?
myForm.brk_total.value=total;
}
</script>
<html>
<body>
<form name="brk">
<tr><td>LA no.</td><td>: <input type=text id="laNo" size=6 style="border:0" value='<%=la_no%>'> </td></tr>
<%for(int c=0; c<wp.size(); c++){%>
<td><input type="text" size=5 name="wp<%=c%>" value='<%=wp.elementAt(c)%>'></td>
<td><input type="text" size=4 name="ln<%=c%>" value='<%=ln.elementAt(c)%>'></td>
<td><input type="text" size=8 name="brkID<%=c%>" id="brkID" value='<%=brkID.elementAt(c)%>' onFocus="chkBreakdown('<%=wp.elementAt(c)%>','<%=l n.elementAt(c)%>','<%=la_no%>');"></td>
</form>
<input type="text" name="brk_total">
</body>
</html>

ukgeoff · #2 (**permalink**) May 26th, 2006, 13:06

Code: Select all

function myFunction(...){
   ...
   ...
   ...
   return someValue;
}

The variable someValue needs to hold whatever you wish to return from the called function.

BTW. In your second example above, you define two variable outside the <script>...</script> tags. This is not allowed.

melvinoyh · #3 (**permalink**) May 27th, 2006, 00:57

oh in my second example, ya i know, i should write like this
<%!
Vector wp = new Vector();
Vector ln = new Vector();
%>

then how about this sentence of code, izzit correct?
<td><input type="text" size=8 name="brkID<%=c%>" id="brkID" value='<%=brkID.elementAt(c)%>' onFocus="chkBreakdown('<%=wp.elementAt(c)%>','<%=l n.elementAt(c)%>','<%=la_no%>');"></td>

when on focus, then call a function together with 3 parameters.

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Getting value from function