Problem to set variable decimal characters to 3

[milpinkf]

Hello everyone!

I have a little problem with displaying the content of a variable.

I have a self-made survey, which ends with a slide that must show 4 results. Each of them, are stored in 4 variables. This results are numbers that are in between 0 and 1.

When a number like 0.666666666667 appear, I need it to be shown as 0.66 or 0.67 (it doesn't matter if it's just cropped). When I setted the variable, I put 3 as the maximum number of characters, but when I previewed it, it shows more numbers (you can see it in the capture).

Is there anyway to set it up to show just 2 decimals, and not every of them?

Thank you in advance!

I'm using Captivate 2019, with the last update.

[RodWard]

Yes this can be done if your content output is HTML5 and you are willing to invest in the CpExtra HTML5 widget.

Take a look at this page:

Math Related | Infosemantics Pty Ltd

The function you need is related to xcmndRoundTo

If you don't want the widget, you'll need to work out how to do the math using JavaScript.

[milpinkf]

Hi Rod! Thank you for the quick response!

Unfortunatelly I cannot invest in the widget.

I'll see if I can find someone to help me with JS, 'cause I don't think I'll be able to do it (my knowledge about JS is about 0 ).

Thank you so much again!

[Lilybiri]

Several functions/methods are available in JS to define the number of decimals. Do you want that number to be variable or fixed?

BTW, I never have seen a widget that was so powerful as CpExtra. Its cost is ridiculously low compared with the many hours of time you would save by avoiding a lot of scripting. 

[milpinkf]

Hi Lilybiri, I have to make an stupid question, what's the difference between the number being variable or fixed?

I have a variable wich value can be 0.5 (one decimal) or 0.389474636463824. I the case the value is 0.5 I need just to show 0.5, in the case the number is 0.389474636463824, I need to show 0.38 (cropped is just fine, if it round it to 0.39 it's fine too).

Thank you in advance.

[Lilybiri]

Was talking about the number of deciimals. There is a method .toFixed() but you can make the number of deciamls variable. If you alway s want 3 deciamls, it is a fixed number.

My bad explanation.

[milpinkf]

I always want the same number of decimals, so fixed!

[Lilybiri]

As usual there are many ways to achieve the same result. If you don't need the result for further calculations in Captivate, the methiod I mentioned (.roFixed) wouid have been easier. I would have chosen that one, but both methods work.

[milpinkf]

I was trying the method Dan suggested before, but cannot make it work.

For sure I'm doing something wrong. Paste here the JS: (window, actual)

var_categoria1 = window.cpAPIInterface.getVariableValue(var_categoria1);

varcat1_2decimals = round(var_categoria1 * 100)/100;

window.cpAPIInterface.setVariableValue(var_categoria1, varcat1_2decimals);

var_categoria2 = window.cpAPIInterface.getVariableValue(var_categoria2);

varcat2_2decimals = round(var_categoria2 * 100)/100;

window.cpAPIInterface.setVariableValue(var_categoria2, varcat2_2decimals);

var_categoria3 = window.cpAPIInterface.getVariableValue(var_categoria3);

varcat3_2decimals = round(var_categoria3 * 100)/100;

window.cpAPIInterface.setVariableValue(var_categoria3, varcat3_2decimals);

var_categoria4 = window.cpAPIInterface.getVariableValue(var_categoria4);

varcat4_2decimals = round(var_categoria4 * 100)/100;

window.cpAPIInterface.setVariableValue(var_categoria4, varcat4_2decimals);

In fact, if I want to use the .toFixed method you mentioned, how apply it? Something like this? (1 variable for example)

var_categoria4 = window.cpAPIInterface.getVariableValue(var_categoria4);

var_categoria4 = var_categoria4.toFixed(2);

window.cpAPIInterface.setVariableValue(var_categoria4);

[Lilybiri]

Wanted to leave this to the user who posted his solution. But I see that you are not using the setVariableValue/getVariableValue correctly. The argument indicating the variable you want to get or to populate has to be between quotes (he used double quotes).

[dan561]

Yes, you must use quotes when using a Captivate name in JS. Single or double quotes do the same thing - it doesn't matter.

And yes, you used toFixed() properly. The old-school way is what I grew up with, so I still use it - it also makes clear what is happening mathematically.

[milpinkf]

Thank you so much for your help Lily & Dan!

Even with the quotes, doesn't seem to work.

var_categoria1 = window.cpAPIInterface.getVariableValue("var_categoria1");

varcat1_2decimals = round(var_categoria1 * 100)/100;

window.cpAPIInterface.setVariableValue("var_categoria1", varcat1_2decimals);

var_categoria2 = window.cpAPIInterface.getVariableValue("var_categoria2");

varcat2_2decimals = round(var_categoria2 * 100)/100;

window.cpAPIInterface.setVariableValue("var_categoria2", varcat2_2decimals);

var_categoria3 = window.cpAPIInterface.getVariableValue("var_categoria3");

varcat3_2decimals = round(var_categoria3 * 100)/100;

window.cpAPIInterface.setVariableValue("var_categoria3", varcat3_2decimals);

var_categoria4 = window.cpAPIInterface.getVariableValue("var_categoria4");

varcat4_2decimals = round(var_categoria4 * 100)/100;

window.cpAPIInterface.setVariableValue("var_categoria4", varcat4_2decimals);

In the Advanced Action, when execute the JS, I selected "actual window". Is that correct?

[Paul Wilson CTDP]

Maybe you can make use of the knowledge in this video. Adobe Captivate - Progress Indicator as a Percentage - YouTube

[dan561]

I assume those values are stored in variables - I'll call them var1, var2, var3 ....

On Enter of the slide, execute Javascript

//First get your value from Captivate to JS:

var1 = window.cpAPIInterface.getVariableValue("var1");

//To round to 2 decimal places you multiply each value by 100, round it to a whole number, then divide by 100:

var1Rounded  = round(var1 * 100);

var1_2decimals = var1Rounded/100;

//Or combine that in one line:

//var1_2decimals = round(var1 * 100)/100;

//Send that back to Captivate:

window.cpAPIInterface.setVariableValue("var1", var1_2decimals);

//Repeat for the other variables

[dan561 · Accepted solution]

Oops, my bad. One little thing needs to be added to make the round function work:

varcat1_2decimals = Math.round(var_categoria1 * 100)/100;

[milpinkf]

Great!

Worked like a charm!

Thank you, thank you, thank you!

[ariellem65721562]

Can you give me the three lines that I need to put in, that edit threw me off, I am not sure where that goes

[ariellem65721562]

Can you give just the javascript command exactly how I need to input? The numbers are just not rounding

[johnleggett]

Hi

Did you manage to solve the javascript command issue? I am having the same issue in wanting to round a Captivate variable to two decimal places - getting nowhere fast!

[johnleggett]

Managed to get the Captivate variable 2 decimal places result I needed by using the following
(with a kind nod to Paul Wilson and his contact!):

window.cpAPIInterface.setVariableValue
("myVarNam",Math.floor(myVarNam * 100) / 100);

[Lilybiri]

You didn't want to round, just to cut? The method "number.tofixed(2)" would have meant lot less typing than this math function. Any method is good if it works however