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POform.submit is not a function - How to create and POST a form with (pure) Javascript in a Firefox extension
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copied!<p>I'm trying to create and send a form with pure Javascript in a Firefox extension. However, even with the most basic form, the browser console keeps saying: </p> <blockquote> <p>TypeError: form.submit is not a function</p> </blockquote> <p>I searched and read several posts on the subject but they didn't treat this particular issue. A common mistake is to have an input named "submit", but it is not the case here.</p> <p>Here is my code, inspired from this great post <a href="https://stackoverflow.com/questions/133925/javascript-post-request-like-a-form-submit">JavaScript post request like a form submit</a> :</p> <pre><code>// Create a form var form = document.createElement("form"); form.action = "http://example.com"; form.method = "POST" var hiddenField = document.createElement("input"); hiddenField.setAttribute("type", "submit"); hiddenField.setAttribute("name", "sub"); hiddenField.setAttribute("value", "send"); form.appendChild(hiddenField); // Create a document var doc = document.implementation.createDocument ('http://www.w3.org/1999/xhtml', 'html', null); var body = document.createElementNS('http://www.w3.org/1999/xhtml', 'body'); body.appendChild(form); doc.documentElement.appendChild(body); // Call the form's submit method form.submit(); </code></pre> <p>I'm new to Javascript so it is likely that I'm doing a trivial mistake. Could anyone give me a clue on how to fix this ?</p>

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