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 Post subject: Add question
PostPosted: January 2nd, 2016, 10:43 am 
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Joined: May 16th, 2008, 4:50 pm
Posts: 368
Location: Berghem The Netherlands
Opus: Opus Pro 9.75
OS: Windows 10
System: `HP
Hi,
I am working on a HTML5 project where i have to add a number from an other variable.
When i do this by using the add function it sets the number after the existing number in that variable.
When i use the add function with a number (i can choose between number or variable) it works perfect
but i need the variable to add.

When i substract a variable worth is works.
What am i doing wrong?

Kind Regards, Ad

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 Post subject: Re: Add question
PostPosted: January 3rd, 2016, 10:47 am 
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Joined: March 21st, 2007, 10:44 am
Posts: 3188
Location: UK
Opus: Evolution
In JavaScript, the '+' operator is used both for arithmetic (adding) and for strings (concatenation). If one of your variables is a string (text type in Opus) then they are joined not added.

I think perhaps that this shouldn't happen with the Add Action, as personally that action implies arithmetic but in pure code using '+' with always depended on what type of variable JS decides it is handling - so I can understand why it happens.

You either need to specify your variable as a Number in Opus or if coding Type cast accordingly - see this for some more information:

http://www.w3schools.com/js/js_type_conversion.asp

</mack>

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