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Q&A Submitting a form via XHR/AJAX causes partial data arrival to email inbox (only HTML without input)

I am guessing a little here. By not preventingdefault, the form will POST the data to the server. If you switch to AJAX you have to provide the body as per documentation. However, I do not rememb...

posted 3y ago by Alexei‭ · edited 3y ago by Alexei‭

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#2: Post edited by

Alexei‭ · 2021-03-29T15:22:24Z (about 3 years ago)
added the jQuery way

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I am guessing a little here. By not preventingdefault, the form will POST the data to the server.
If you switch to AJAX you have to provide the body as [per documentation](https://developer.mozilla.org/en-US/docs/Web/API/XMLHttpRequest/send).
However, I do not remember to ever using the XMLHttpRequest directly, because there are wrappers to help you. One example using a more modern approach ([fetch API](https://developer.mozilla.org/en-US/docs/Web/API/Fetch_API/Using_Fetch)) is provided in [this answer](https://stackoverflow.com/a/45529553/2780791):
const url = "http://example.com";
fetch(url, {
method : "POST",
body: new FormData(document.getElementById("contact_form")),
}).then(
response => response.text() // .json(), etc.
).then(
html => console.log(html)
);

I am guessing a little here. By not preventingdefault, the form will POST the data to the server.
If you switch to AJAX you have to provide the body as [per documentation](https://developer.mozilla.org/en-US/docs/Web/API/XMLHttpRequest/send).
However, I do not remember to ever using the XMLHttpRequest directly, because there are wrappers to help you. One example using a more modern approach ([fetch API](https://developer.mozilla.org/en-US/docs/Web/API/Fetch_API/Using_Fetch)) is provided in [this answer](https://stackoverflow.com/a/45529553/2780791):
const url = "http://example.com";
fetch(url, {
method : "POST",
body: new FormData(document.getElementById("contact_form")),
}).then(
response => response.text() // .json(), etc.
).then(
html => console.log(html)
);
A jquery way of achieving a similar HTTP call is provided by [this answer](https://stackoverflow.com/a/5772905/2780791):
$(document).ready(function(){
$("#frm").submit( function () {
$.post(
'script.php',
$(this).serialize(),
function(data){
// do something with data
}
);
return false;
});
});

#1: Initial revision by

Alexei‭ · 2021-03-29T15:07:49Z (about 3 years ago)

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I am guessing a little here. By not preventingdefault, the form will POST the data to the server.

If you switch to AJAX you have to provide the body as [per documentation](https://developer.mozilla.org/en-US/docs/Web/API/XMLHttpRequest/send).

However, I do not remember to ever using the XMLHttpRequest directly, because there are wrappers to help you. One example using a more modern approach ([fetch API](https://developer.mozilla.org/en-US/docs/Web/API/Fetch_API/Using_Fetch)) is provided in [this answer](https://stackoverflow.com/a/45529553/2780791):

	const url = "http://example.com";
	fetch(url, {
		method : "POST",
		body: new FormData(document.getElementById("contact_form")),
	}).then(
		response => response.text() // .json(), etc.
	).then(
		html => console.log(html)
	);

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