I have a weird situation. I need to run an age calculation and it if the input is a certain age, lets say 18 or older, the result should return True – if 17 or younger it should return False. I have been trying, unsuccessfully to return the results to a text field.

Also, I dont know if there is a way to run the calculation without a button. I’d rather run the calculation after inputting the date.

This is what I have tried, I know the issue is with the if/else code and I am guessing the id in the last line.

<script>
function ageCalculator() {
    var userinput = document.getElementById("BirthDate").value;
    var BirthDate = new Date(userinput);
    if(userinput==null || userinput=='') {
      document.getElementById("message").innerHTML = "Please enter your Date of Birth!";  
      return false; 
    } else {
    var month_diff = Date.now() - BirthDate.getTime();
    var age_dt = new Date(month_diff); 
    var year = age_dt.getUTCFullYear();
    var age = Math.abs(year - 1970);
    return document.getElementById("result").innerHTML =  
             + age ;

    if (age >= 55) {
        display: True;
    }  else if {
        display: false;
    }
    }
}
</script>
<div style="clear: both;">
    <h1>Please enter your Date of Birth so we can ensure the information you see is accurate.</h1>
    <div class="form-inline SectionBox">
    <input type=DateTextBox id=BirthDate emptymessage=MM/DD/YYYY required=True labeltext=Date of Birth:></div></div>
    <button type="submit" onclick = "ageCalculator()"> Next </button> <br><br>
    <input type=TextBox id=age required=false></div></div>