Submit an HTML form without having a submit button?

$('#myDiv').click(function() {  
    $('#myForm').submit();
});

Bind the div click event.

$("div").click(function(){ $("form#myForm").submit(); });

Yes, it's fairly simple. Just use the submit^{[jQuery docs]} method inside of a click handler function.

$("#myDiv").click(function() {
 $("#myForm").submit();
});

If you prefer, you can do it with vanilla Javascript:

document.getElementById("myDiv").onclick = function() {
  document.getElementById("myForm").submit();
};

The method you can use to submit a specific form is the following:

// Grab the form element and manually trigger the 'submit' method on it:
document.getElementById("myForm").submit();

So in your example, you can add a click event handler on any element you like and trigger the form's submit method through that:

<form method="post" id="myForm">
  <textarea name="reply">text</textarea>
</form>

<div class="submit">Submit the form by clicking this</div>

const myForm = document.getElementById("myForm");
document.querySelector(".submit").addEventListener("click", function(){

  myForm.submit();

});

And if you want to do it jQuery style (which I do not recommend for such a simple task);

$("#myForm").submit();

In its full form:

const myForm = $("#myForm");
$(".submit").click(function(){

  myForm.submit();

});

References:

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