Digital Workshop

Good Day,

I am publishing a html5 website, on one of the pages the user adds products to his/her cart and a <GrandTotal> variable is displayed...the problem is as follows:

When a user let say buys products value of:

Product 1 -- 400
Product 2 -- 120
Product 3 -- 140

The <GrandTotal> value displays this : 400120140 when I refresh the page and do it again the correct value of 660 is displayed. Always on the first attempt the add variable do not add up but it looks like it treats it as a string and add to existing content???

Is this a bug?

Make sure all your variables are numbers before performing arithmetic. Something like:


</mack>

Hi Mackavi,

Hope you are good.

So I must make use of scripting and not opus actions?

Yes, although this is a basic section question, I would suggest that you perform arithmetic in a script rather than actions when publishing to HTML5.

If you're interested the reason the problem occurs is that JavaScript (used in HTML5) is a loosely typed language which means that a variable can change between a string and a number depending on how it is used. As JavaScript uses the plus (+) operator to both perform addition arithmetic and concatenate strings, your intention can be misinterpreted.

Although not a bug, I think it might be worth asking DW to change the way the actions work because at this level, I think it's fair to assume the ADD Action would perform the arithmetic operation. And maybe some extra actions for specifically joining or manipulate strings could also be included like they use in the Scratch editor.

</mack>

So Mack,

How do I use Opus script to add 1 to a variable as the Opus action is appending it?

I have a variable <value 1> which is a number and I want to add "1" to it. The Opus action is sometimes appending it and making it "11" so I am guessing a script would be better. I can't get the syntax correct.

Bob

For scripting, you just use the Number function above to solve the problem.

</mack>

My variable that is being added to is <environs>.

I have added the following code to the Opus Script action but it still appends the number to 11 and fails in the publication as a result.
All text boxes that show the variable for testing purposes have been removed. The following works in a test publication but not when I amend the main pub.

Is my syntax wrong Mack?

Number.environs //converts variable to number
environs = environs + 1

Help appreciated

Bob