How to show character count of a text area field?

[BetterForms]

Melvyn Parr:
Hi All… Another question (sorry)… Is there an easy way to put a character count (including spaces) on a textArea?

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Delfs:
in BF you can do something in HTML like:

<h3> Char count: {{model.myTextAreakey.length }} </h3>

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Melvyn Parr:
so this is my code Charles

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Delfs:

// the snippet below

{
            "html": "<h3> Char count: {{model.examplechallenge.length }} </h3>",
            "styleClasses": "col-md-10",
            "type": "html"
        }

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Melvyn Parr:

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