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I want to require that a checkbox be checked on a Community form. I am able to display an alert when it isn't checked. I don't want to do that. I want to display text on the form. I think I should be able to do this by dynamically adding CSS. I don't know how to do that. Pointers?

    var legalChecked = component.find("legalnotice").get("v.value");
    if(!legalChecked) {
        alert("ugh!");
    }
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I am able to use $A.util.addClass(legalNotice, 'hasborder') and `$A.util.removeClass(legalNotice, 'hasborder') to accomplish the dynamic application of CSS

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    Please use the edit link on your question to add additional information. The Post Answer button should be used only for complete answers to the question. - From Review
    – Derek F
    Feb 17 '20 at 20:15
  • Using addClass is the answer that I found to my problem. Feb 18 '20 at 12:57

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