[Javascript] multiple ifs on one line syntax

Thu Jun 6 08:57:27 CDT 2002

Andrew,

And --  > &&
Or --  > ||   (the pipe symbol)

Cheers,

Kim

-----Original Message-----
From: javascript-admin at LaTech.edu [mailto:javascript-admin at LaTech.edu]
On Behalf Of Andrew Peterson
Sent: Thursday, June 06, 2002 9:48 AM
To: javascript at LaTech.edu
Subject: [Javascript] multiple ifs on one line syntax

Hi,

I left my O'Reilly Javascript book at home (DOH!) and am having trouble
with the syntax for two IF statements on one line using either AND or OR
to separate them. The following statement using AND generates an error:

if(form.TransType.options[form.TransType.selectedIndex].value == 'S')
and
(form.RecipientAgency.value=='P')   {
...

similarly, when I try using OR like the following example, the same
problem
occurs:

if(form.TransType.options[form.TransType.selectedIndex].value == 'R') OR
(form.TransType.options[form.TransType.selectedIndex].value == 'S') {
...

Any help greatly appreciated.

Thanks in advance,
Andrew

> -----Original Message-----
> From: javascript-admin at LaTech.edu 
> [mailto:javascript-admin at LaTech.edu]On
> Behalf Of Rodney Myers
> Sent: Friday, May 03, 2002 3:07 AM
> To: javascript at LaTech.edu
> Subject: Re: [Javascript] "Object Expected" Error
>
>
> Try
> if (string.indexOf("<TEXTAREA")>-1)
>
> Your current expression
> string.indexOf("<TEXTAREA")
> gives the value -1 because there is no "<TEXTAREA"
> -1 is TRUE not FALSE!
> Only 0 is false.
>
> hth
>
> Rodney
>
>
> SoitPP at aol.com wrote:
>
> > Dear JavaScript list,
> > I am getting an "Object Expected" Error when trying to
> > call a certain function in a program. I don't quite understand what 
> > is causing this error. The program flow seems simple enough. What am

> > I missing? Here is a duplication of the error in a cut down version:
> >
> > <html>
> > <head>
> > <title>Function Testing</title>
> > <script language="JavaScript">
> > function removeValue(string) {
> > if (string.indexOf("<TEXTAREA")) {
> > //line 17 follows
> > string = string.substring(0,indexOf("<TEXTAREA")) +
> > string.substring(indexOf("</TEXTAREA>",string.length))
> > return string
> > }
> > return string
> > }
> > function robot() {
> > preSTRvariable = document.body.innerHTML
> > preSTRvariable = removeValue(preSTRvariable)
> > }
> > </script>
> > </head>
> > <body>
> > <form>
> > <button style="background-color: #FFFFFF" onClick="robot 
> > ()">Click</button> </form>
> > </body>
> > </html>
> >
> > Very simple right? So how come I get "Objected Expected" at line 17?

> > Patiently, Aaron
> >
> >
> > _______________________________________________
> > Javascript mailing list
> > Javascript at LaTech.edu 
> > https://lists.LaTech.edu/mailman/listinfo/javascript
>
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