How do I hide a submit button based on a dropdown value?

[74Systems]

How do I hide the submit button when the data in a dropdown is blank and show when it chooses one of the two values? Currently I have a dropdown that says "Ready to place an order?" and when clicked, you have two options: "Order Now" or "Call for Payment." I want the submit button hidden until they make one or the other choices. Thank you in advance!

[Mathilda]

On 11/2/2017 at 7:13 PM, 74Systems said:

How do I hide the submit button when the data in a dropdown is blank and show when it chooses one of the two values? Currently I have a dropdown that says "Ready to place an order?" and when clicked, you have two options: "Order Now" or "Call for Payment." I want the submit button hidden until they make one or the other choices. Thank you in advance!

You may insert my script in the footer of the submission form

<script>

function hide() {

var v_value = document.getElementsByName("InsertRecordFieldName")[0].value;

if (v_value.length<1){
document.getElementById("Submit").style.display="none";
}
else{
document.getElementById("Submit").style.display = "inline-block";
}
}
window.onload = hide;
 document.getElementsByName("InsertRecordFieldName")[0].onblur=hide;

</script> 

Use your field name instead of: FieldName