How can I submit a form using JavaScript?

Question

I have a form with id theForm which has the following div with a submit button inside:

        
                      

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Answer 1

If your form does not have any id, but it has a class name like theForm, you can use the below statement to submit it:

document.getElementsByClassName("theForm")[0].submit();

Answer 2

HTML

<!-- change id attribute to name  -->

<form method="post" action="yourUrl" name="theForm">
    <button onclick="placeOrder()">Place Order</button>
</form>

JavaScript

function placeOrder () {
    document.theForm.submit()
}

Answer 3

Set the name attribute of your form to "theForm" and your code will work.

Answer 4

I will leave the way I do to submit the form without using the name tag inside the form:

HTML

<button type="submit" onClick="placeOrder(this.form)">Place Order</button>

JavaScript

function placeOrder(form){
    form.submit();
}