How to check empty parametr with java script?

Community Beginner ,
Dec 04, 2017 Dec 04, 2017

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Hi!

1. I can not find how to check a text parameter for emptiness. For example, if the user deletes the default value and does not enter his own.

2. And the same only for a file parameter, for example, to print html only if the user has entered his file.

3. How to apply some parameter only on the finished site and not in the design space of the  app?

Thank yo

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Guide ,
Dec 04, 2017 Dec 04, 2017

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Empty text fields return a null value, so do something like: if({param_myparam}==''){...};

If the user doesn't add a file, the parameter value remains as Add File so you can test against that.

Currently, there is no method to determine if you are within Muse or previewing in a browser, so you cannot turn features on and off.

I hope this helps.

David

Creative Muse

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Community Beginner ,
Dec 04, 2017 Dec 04, 2017

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1. if({param_myparam}==''){...};   not working. i mean if not null working, else ... nothing...

2. I did before, just wanted to know if there is any other way to check if the user added the file

3. It's sad. I made it possible to display the slider at full height of the screen,

it works on the site, but in the app the widget is flattened to 2 pixels in height. Looks ugly.

Here is my code:

          var wheight = $(window).height();

            $(' #{param_itemUID}').css('height', wheight);

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Guide ,
Dec 04, 2017 Dec 04, 2017

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1. I don't understand what you mean.

2. No, there is no other way to detect this.

3. The page in Muse is only a representation of the final result. Have you tried generating your own container for the slider instead of using the widget container?

David

Creative Muse

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Community Beginner ,
Dec 04, 2017 Dec 04, 2017

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Sorry for my English

I mean nothing happens when i check for empty string. Nothing at all.

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Guide ,
Dec 04, 2017 Dec 04, 2017

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Have a look at this. It works.

<?xml version="1.0" encoding="UTF-8"?>

<HTMLWidget name="Value_Test Widget" formatNumber="4" isResponsive="false"

        localization="none" creator="©2017 David Asch|Creative Muse"

        defaultWidth="150" defaultHeight="50" isResizable="true">

        <parameters>

            <separator />

            <info label="This is a test of validating null values" />

            <text defaultIllegalForOutput="true" defaultValue="Default" name="testText" label="Some text" />

            <separator />

        </parameters>

         <pageItemHTML>

    <div id="test">This is some text</div>

</pageItemHTML>

<bodyEndHTML>

   <![CDATA[

    <script>

        if('{param_testText}'==''){

            document.getElementById('test').innerHTML='You didn't enter a value!!';

        }else{

            document.getElementById('test').innerHTML='This value given: {param_testText}';

        }

    </script>

    ]]>

</bodyEndHTML>

</HTMLWidget>

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Community Beginner ,
Dec 04, 2017 Dec 04, 2017

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Thank you! I will try your code!

And I solved the problem of flattening the widget, I added the minimum height to the container.

           var wheight = $(window).height();

            $('#{param_itemUID}').css('min-height', '{param_height}px' ).css('height', wheight);

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