Use query parameter to automatically select a checkboxes choice?

Question

We have a form with a "interests" field that is being shown as checkboxes. We'd like to be able to use a link to the page with a query parameter that would automatically check one of the boxes on the form based on the value of the query parameter. This would happen when the page/form is first displayed.
 
Here's the page with the "interests" field: https://discover.semi.org/technology-communities-subscription-registration.html
Usage example would be, if there is an email talking about cyber security (or a web page)  then there could be a link to the above subscription page and the "cyber security" checkbox would automatically be checked. 
 
Is there a way to do this with Javascript? Any help is appreciated!
Thanks,
Sheila

SanfordWhiteman · Accepted Answer

You can use the all-purpose auto-fill code at

MktoForms2 :: KV HTML w/Auto-Fill and Cascade v1.1.2

Download the FormsPlus::Util JS and upload it to your Design Studio and then include it as shown in the HTML pane.

Then after FormsPlus::Util, include the local <script> as shown in the JS pane.

Your config block would be like

var fieldFillRules = [      
  {
    name : "Interest_Tech_Community__c",
    channel: "query",
    selector: "interest"
  }
];

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