if and

Kingell · **Posted:** May 19th, 2014, 12:48 am

I've used this kind of conditional expression in other languages but I can't
figure out how Opus Script deals with it.

Here's part of my code:
if (counter == 4) and (score1 == 4)
{
PlaySound("C:\\Program Files (x86)\\Opus Pro 9\\Resources\\Sounds\\Sliders\\bell up.ogg")
GotoPage("First1")
}

if (score1 <=3)and (score1 == 4)
{ PlaySound ("C:\\Program Files (x86)\\Opus Pro 9\\Resources\\Sounds\\Sliders\\bell up.ogg")
GotoPage("Sorry")
}

I'm puzzled by the "and" - is this not part of Opus Script?
In JavaScript, for example, "and" is replaced by "&&".
And I can't see an if......then.... else.

How can I sort this please in Opus Script?
Regards

ovo · **Posted:** May 19th, 2014, 7:52 am

You can find it in OpusScript help under "Syntax: Operators"

AND = &&
OR = ||
NOT = !

so it should be:

Code:

if (counter == 4 && score1 == 4){...}

this could be usefull from help:

Quote:

OpusScript is based on a JavaScript standard produced by the European Computer Manufacturers Association (ECMA), commonly known as ECMAScript or ECMA-262.

ECMA-262 is equivalent to JavaScript version 1.1. In other words, programming with OpusScript is like programming with JavaScript version 1.1 but obviously it has been extended with commands and functions specific to Opus publication objects.

o.

mackavi · **Posted:** May 19th, 2014, 8:59 am

!= NOT =!

You should really also use strict equality to avoid unnecessary / unwanted type conversion.

Mack

ovo · **Posted:** May 19th, 2014, 9:49 am

sure it should be !=. it was copy paste from help but not the best part

Quote:

x = !true will set x as false

for requested help.

Kingell · **Posted:** May 19th, 2014, 10:04 am

Quote:

ECMA-262 is equivalent to JavaScript version 1.1. In other words, programming with OpusScript is like programming with JavaScript version 1.1 but obviously it has been extended with commands and functions specific to Opus publication objects.

Yup - I bought the JavaScript book but sometimes as you say there are extensions peculiar to Opus.
The layout in my book does not put the && inside the same brackets as the first condition.
This, I expect, is the problem.

Thanks very much - I'll give it a try.

I use an Opus 4 book for guidance perhaps I should use the help file. :roll:

Regards

Digital Workshop

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