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Q&A How to submit form data with Ajax?

I need to apply backend behavior (PHP directives in my case) to an HTML <form>. The backend behavior I wish to apply to the form is in this pattern (behavior.php): <?php $name = $_POST...

1 answer  ·  posted 2y ago by deleted user  ·  last activity 2y ago by r~~‭

#18: Post edited by (deleted user) · 2021-12-08T03:10:43Z (over 2 years ago)
  • I need to apply backend behavior (PHP directives in my case) to an HTML `<form>`.
  • The backend behavior I wish to apply to the form is in this pattern:
  • ```php
  • <?php
  • $name = $_POST['name']; # Required;
  • $email = $_POST['email']; # Required;
  • $to = 'example@example.com';
  • $subject = 'A new message from: ' . $name;
  • $headers[] = 'MIME-Version: 1.0';
  • $headers[] = 'Content-type: text/html; charset=utf-8';
  • mail($to, $subject, $message, implode("\r\n", $headers));
  • ?>
  • ```
  • The way I know to do this is with this HTML pattern:
  • ```html
  • <form action="/behavior.php" method="POST">
  • ```
  • Now I have a form that the default behavior of which is prevented with `preventDefault()` so clicking the *submit* button will not cause form submission.<br>
  • Therefore the HTML `action` and `method` became ineffective and I need to send the form's data with Ajax but according to the backend behavior (under behavior.php) where the relevant email address is stored.
  • In MDN "[Using Fetch](https://developer.mozilla.org/en-US/docs/Web/API/Fetch_API/Using_Fetch)" I didn't find any code example with such a file reference.
  • I need to apply backend behavior (PHP directives in my case) to an HTML `<form>`.
  • The backend behavior I wish to apply to the form is in this pattern (behavior.php):
  • ```php
  • <?php
  • $name = $_POST['name']; # Required;
  • $email = $_POST['email']; # Required;
  • $to = 'example@example.com';
  • $subject = 'A new message from: ' . $name;
  • $headers[] = 'MIME-Version: 1.0';
  • $headers[] = 'Content-type: text/html; charset=utf-8';
  • mail($to, $subject, $message, implode("\r\n", $headers));
  • ?>
  • ```
  • The way I know to do this is with this HTML pattern:
  • ```html
  • <form action="/behavior.php" method="POST">
  • ```
  • Now I have a form that the default behavior of which is prevented with `preventDefault()` so clicking the *submit* button will not cause form submission.<br>
  • Therefore the HTML `action` and `method` became ineffective and I need to send the form's data with Ajax but according to the backend behavior (under behavior.php) where the relevant email address is stored.
  • In MDN "[Using Fetch](https://developer.mozilla.org/en-US/docs/Web/API/Fetch_API/Using_Fetch)" I didn't find any code example with such a file reference.
#17: Post edited by (deleted user) · 2021-12-08T03:09:27Z (over 2 years ago)
  • I need to apply backend behavior (PHP directives in my case) to an HTML `<form>`.
  • The basic way I know to do it is this pattern:
  • ```html
  • action="/behavior.php" method="POST"
  • ```
  • Now I have a form that the default behavior of which is prevented with `preventDefault()` so clicking the *submit* button will not cause form submission.<br>
  • Therefore the HTML `action` and `method` become ineffective and I need to send the form's data with Ajax but according to the backend behavior (under behavior.php) where the relevant email address is stored.
  • In MDN "[Using Fetch](https://developer.mozilla.org/en-US/docs/Web/API/Fetch_API/Using_Fetch)" I didn't find any code example with such a file reference.
  • I need to apply backend behavior (PHP directives in my case) to an HTML `<form>`.
  • The backend behavior I wish to apply to the form is in this pattern:
  • ```php
  • <?php
  • $name = $_POST['name']; # Required;
  • $email = $_POST['email']; # Required;
  • $to = 'example@example.com';
  • $subject = 'A new message from: ' . $name;
  • $headers[] = 'MIME-Version: 1.0';
  • $headers[] = 'Content-type: text/html; charset=utf-8';
  • mail($to, $subject, $message, implode("\r\n", $headers));
  • ?>
  • ```
  • The way I know to do this is with this HTML pattern:
  • ```html
  • <form action="/behavior.php" method="POST">
  • ```
  • Now I have a form that the default behavior of which is prevented with `preventDefault()` so clicking the *submit* button will not cause form submission.<br>
  • Therefore the HTML `action` and `method` became ineffective and I need to send the form's data with Ajax but according to the backend behavior (under behavior.php) where the relevant email address is stored.
  • In MDN "[Using Fetch](https://developer.mozilla.org/en-US/docs/Web/API/Fetch_API/Using_Fetch)" I didn't find any code example with such a file reference.
#16: Post edited by (deleted user) · 2021-12-08T01:20:37Z (over 2 years ago)
  • I need to apply backend behavior (PHP directives in my case) to an HTML `<form>`.
  • The basic way I know to do it is this pattern:
  • ```html
  • action="/behavior.php" method="POST"
  • ```
  • Now I have a form in which the default behavior is prevented with `preventDefault()` so clicking the *submit* button will not cause form submission and therefore the HTML `action` and the `method` become ineffective and I need to send the form's data with Ajax but according to the backend behavior (under behavior.php) where the relevant email address is stored.
  • In MDN "[Using Fetch](https://developer.mozilla.org/en-US/docs/Web/API/Fetch_API/Using_Fetch)" I didn't find any code example with such a file reference.
  • I need to apply backend behavior (PHP directives in my case) to an HTML `<form>`.
  • The basic way I know to do it is this pattern:
  • ```html
  • action="/behavior.php" method="POST"
  • ```
  • Now I have a form that the default behavior of which is prevented with `preventDefault()` so clicking the *submit* button will not cause form submission.<br>
  • Therefore the HTML `action` and `method` become ineffective and I need to send the form's data with Ajax but according to the backend behavior (under behavior.php) where the relevant email address is stored.
  • In MDN "[Using Fetch](https://developer.mozilla.org/en-US/docs/Web/API/Fetch_API/Using_Fetch)" I didn't find any code example with such a file reference.
#15: Post edited by (deleted user) · 2021-12-08T01:18:22Z (over 2 years ago)
  • Applying backend behavior to an HTML form with JavaScript
  • How to submit form data with Ajax?
  • A common way to apply backend behavior to an HTML `<form>` is:
  • ```html
  • action="/behavior.php" method="POST"
  • ```
  • If one applies JavaScript on a form and uses `preventDefault()` then the default behavior of that form (including `action="/behavior.php" method="POST"`) is prevented and some JavaScript way to apply backend for a form is needed.
  • How to apply backend behavior to a form with JavaScript?
  • If it matters, in MDN "[Using Fetch](https://developer.mozilla.org/en-US/docs/Web/API/Fetch_API/Using_Fetch)" and [HTMLFormElement.submit()](https://developer.mozilla.org/en-US/docs/Web/API/HTMLFormElement/submit) I didn't find any code example to "simulate" that attribute-value behavior.
  • I need to apply backend behavior (PHP directives in my case) to an HTML `<form>`.
  • The basic way I know to do it is this pattern:
  • ```html
  • action="/behavior.php" method="POST"
  • ```
  • Now I have a form in which the default behavior is prevented with `preventDefault()` so clicking the *submit* button will not cause form submission and therefore the HTML `action` and the `method` become ineffective and I need to send the form's data with Ajax but according to the backend behavior (under behavior.php) where the relevant email address is stored.
  • In MDN "[Using Fetch](https://developer.mozilla.org/en-US/docs/Web/API/Fetch_API/Using_Fetch)" I didn't find any code example with such a file reference.
#14: Post edited by (deleted user) · 2021-12-08T00:59:33Z (over 2 years ago)
  • Applying backend behavior to an HTML form with JavaScript?
  • Applying backend behavior to an HTML form with JavaScript
  • A common way to apply backend behavior to an HTML `<form>` is:
  • ```html
  • action="/behavior.php" method="POST"
  • ```
  • If one applies JavaScript on a form and uses `preventDefault()` then the default behavior of that form (including `action="/behavior.php" method="POST"`) is prevented and some JavaScript way to apply backend for a form is needed.
  • How to apply backend behavior to a form with JavaScript?
  • If it matters, in MDN "[Using Fetch](https://developer.mozilla.org/en-US/docs/Web/API/Fetch_API/Using_Fetch)" and [HTMLFormElement.submit()](https://developer.mozilla.org/en-US/docs/Web/API/HTMLFormElement/submit) I didn't find any code example to "simulate" (especially with **Ajax**) that attribute-value behavior.
  • A common way to apply backend behavior to an HTML `<form>` is:
  • ```html
  • action="/behavior.php" method="POST"
  • ```
  • If one applies JavaScript on a form and uses `preventDefault()` then the default behavior of that form (including `action="/behavior.php" method="POST"`) is prevented and some JavaScript way to apply backend for a form is needed.
  • How to apply backend behavior to a form with JavaScript?
  • If it matters, in MDN "[Using Fetch](https://developer.mozilla.org/en-US/docs/Web/API/Fetch_API/Using_Fetch)" and [HTMLFormElement.submit()](https://developer.mozilla.org/en-US/docs/Web/API/HTMLFormElement/submit) I didn't find any code example to "simulate" that attribute-value behavior.
#13: Post edited by user avatar CodeFarmer‭ · 2021-12-08T00:56:55Z (over 2 years ago)
Minor spelling correction
Applying backend behavior to an HTML form with JavaScript?
  • A common way to apply backend behavior to an HTML `<form>` is:
  • ```html
  • action="/behavior.php" method="POST"
  • ```
  • If one applies JavaScript on a form and uses `preventDefault()` than the default behavior of that form (including `action="/behavior.php" method="POST"`) is prevented and some JavaScript way to apply backend for a form is needed.
  • How to apply backend behavior to a form with JavaScript?
  • If it matters, in MDN "[Using Fetch](https://developer.mozilla.org/en-US/docs/Web/API/Fetch_API/Using_Fetch)" and [HTMLFormElement.submit()](https://developer.mozilla.org/en-US/docs/Web/API/HTMLFormElement/submit) I didn't find any code example to "simulate" (especially with **Ajax**) that attribute-value behavior.
  • A common way to apply backend behavior to an HTML `<form>` is:
  • ```html
  • action="/behavior.php" method="POST"
  • ```
  • If one applies JavaScript on a form and uses `preventDefault()` then the default behavior of that form (including `action="/behavior.php" method="POST"`) is prevented and some JavaScript way to apply backend for a form is needed.
  • How to apply backend behavior to a form with JavaScript?
  • If it matters, in MDN "[Using Fetch](https://developer.mozilla.org/en-US/docs/Web/API/Fetch_API/Using_Fetch)" and [HTMLFormElement.submit()](https://developer.mozilla.org/en-US/docs/Web/API/HTMLFormElement/submit) I didn't find any code example to "simulate" (especially with **Ajax**) that attribute-value behavior.
#12: Post edited by (deleted user) · 2021-12-07T18:19:48Z (over 2 years ago)
  • Associating backend behavior with a default-prevented form
  • Applying backend behavior to an HTML form with JavaScript?
  • I have prevented the default behavior of a `<form>` so I can no longer associate backend behavior with it this way:
  • ```html
  • action="/behavior.php" method="POST"
  • ```
  • Not associating backend behavior this way is a problem for me because I find it a focal and comfortable way to associate backend behavior with a simple contact form.
  • How to solve that problem?
  • If it matters, in MDN "[Using Fetch](https://developer.mozilla.org/en-US/docs/Web/API/Fetch_API/Using_Fetch)" and [HTMLFormElement.submit()](https://developer.mozilla.org/en-US/docs/Web/API/HTMLFormElement/submit) I didn't find any code example to "simulate" (especially with **Ajax**) that attribute-value behavior.
  • A common way to apply backend behavior to an HTML `<form>` is:
  • ```html
  • action="/behavior.php" method="POST"
  • ```
  • If one applies JavaScript on a form and uses `preventDefault()` than the default behavior of that form (including `action="/behavior.php" method="POST"`) is prevented and some JavaScript way to apply backend for a form is needed.
  • How to apply backend behavior to a form with JavaScript?
  • If it matters, in MDN "[Using Fetch](https://developer.mozilla.org/en-US/docs/Web/API/Fetch_API/Using_Fetch)" and [HTMLFormElement.submit()](https://developer.mozilla.org/en-US/docs/Web/API/HTMLFormElement/submit) I didn't find any code example to "simulate" (especially with **Ajax**) that attribute-value behavior.
#11: Post edited by (deleted user) · 2021-12-07T12:15:49Z (over 2 years ago)
  • I have prevented the default behavior of a `<form>` so I can no longer associate a backend behavior with it as I would with:
  • ```html
  • action="/behavior.php" method="POST"
  • ```
  • Not associating backend behavior this way is a problem for me because I find it a very focal and comfortable way to associate backend behavior with a simple contact form.
  • How to solve that problem?
  • If it matters, in MDN "[Using Fetch](https://developer.mozilla.org/en-US/docs/Web/API/Fetch_API/Using_Fetch)" and [HTMLFormElement.submit()](https://developer.mozilla.org/en-US/docs/Web/API/HTMLFormElement/submit) I didn't find there any code example to "simulate" (especially with **Ajax**) that attribute-value behavior.
  • I have prevented the default behavior of a `<form>` so I can no longer associate backend behavior with it this way:
  • ```html
  • action="/behavior.php" method="POST"
  • ```
  • Not associating backend behavior this way is a problem for me because I find it a focal and comfortable way to associate backend behavior with a simple contact form.
  • How to solve that problem?
  • If it matters, in MDN "[Using Fetch](https://developer.mozilla.org/en-US/docs/Web/API/Fetch_API/Using_Fetch)" and [HTMLFormElement.submit()](https://developer.mozilla.org/en-US/docs/Web/API/HTMLFormElement/submit) I didn't find any code example to "simulate" (especially with **Ajax**) that attribute-value behavior.
#10: Post edited by (deleted user) · 2021-12-07T12:13:03Z (over 2 years ago)
  • Associating backend behavior with a (default-prevented) form
  • Associating backend behavior with a default-prevented form
#9: Post edited by (deleted user) · 2021-12-07T12:12:00Z (over 2 years ago)
  • How to associate backend behavior with a (default-prevented) form, via JavaScript?
  • Associating backend behavior with a (default-prevented) form
  • I have prevented the default behavior of a `<form>` so I can no longer associate a backend behavior with it as I would with:
  • ```html
  • action="/behavior.php" method="POST"
  • ```
  • Not associating backend behavior this way is a problem for me because I find it a very focal and comfortable way to associate backend behavior with a simple contact form and I wish I could perhaps exclude that part from the form's default-behavior-prevention.
  • How would you suggest me to cope with that problem?
  • If it matters, in MDN "[Using Fetch](https://developer.mozilla.org/en-US/docs/Web/API/Fetch_API/Using_Fetch)" and [HTMLFormElement.submit()](https://developer.mozilla.org/en-US/docs/Web/API/HTMLFormElement/submit) I didn't find any code example that would "simulate" that attribute-value behavior.
  • I have prevented the default behavior of a `<form>` so I can no longer associate a backend behavior with it as I would with:
  • ```html
  • action="/behavior.php" method="POST"
  • ```
  • Not associating backend behavior this way is a problem for me because I find it a very focal and comfortable way to associate backend behavior with a simple contact form.
  • How to solve that problem?
  • If it matters, in MDN "[Using Fetch](https://developer.mozilla.org/en-US/docs/Web/API/Fetch_API/Using_Fetch)" and [HTMLFormElement.submit()](https://developer.mozilla.org/en-US/docs/Web/API/HTMLFormElement/submit) I didn't find there any code example to "simulate" (especially with **Ajax**) that attribute-value behavior.
#8: Post edited by (deleted user) · 2021-12-07T12:04:44Z (over 2 years ago)
  • I have prevented the default behavior of a `<form>` so I can no longer associate a backend behavior with it as I would with:
  • ```html
  • action="/behavior.php" method="POST"
  • ```
  • Not associating backend behavior this way is a problem for me because I find it very a focal and comfortable way to associate backend behavior with a simple contact form and I wish I could perhaps exclude that part from the form's default-behavior-prevention.
  • How would you suggest me to cope with that problem?
  • If it matters, in MDN "[Using Fetch](https://developer.mozilla.org/en-US/docs/Web/API/Fetch_API/Using_Fetch)" and [HTMLFormElement.submit()](https://developer.mozilla.org/en-US/docs/Web/API/HTMLFormElement/submit) I didn't find any code example that would "simulate" that attribute-value behavior.
  • I have prevented the default behavior of a `<form>` so I can no longer associate a backend behavior with it as I would with:
  • ```html
  • action="/behavior.php" method="POST"
  • ```
  • Not associating backend behavior this way is a problem for me because I find it a very focal and comfortable way to associate backend behavior with a simple contact form and I wish I could perhaps exclude that part from the form's default-behavior-prevention.
  • How would you suggest me to cope with that problem?
  • If it matters, in MDN "[Using Fetch](https://developer.mozilla.org/en-US/docs/Web/API/Fetch_API/Using_Fetch)" and [HTMLFormElement.submit()](https://developer.mozilla.org/en-US/docs/Web/API/HTMLFormElement/submit) I didn't find any code example that would "simulate" that attribute-value behavior.
#7: Post edited by (deleted user) · 2021-12-07T09:58:21Z (over 2 years ago)
  • How to associate backend behavior with a (default-prevented) form via JavaScript?
  • How to associate backend behavior with a (default-prevented) form, via JavaScript?
#6: Post edited by (deleted user) · 2021-12-07T09:57:58Z (over 2 years ago)
  • How to initiate a form action (POST, PHP-based) from JavaScript?
  • How to associate backend behavior with a (default-prevented) form via JavaScript?
#5: Post edited by (deleted user) · 2021-12-07T09:54:14Z (over 2 years ago)
  • I have prevented the default behavior of a `<form>` but I still need to do a form `action` in the method `POST`, to send submitted form data by JavaScript.
  • * I didn't find the term `action` in the [`fetch()`](https://developer.mozilla.org/en-US/docs/Web/API/fetch) documentation
  • * I didn't find a way to utilize my backend file (backend.php) with [`submit()`](https://developer.mozilla.org/en-US/docs/Web/API/HTMLFormElement/submit) in the method's documentation
  • I have prevented the default behavior of a `<form>` so I can no longer associate a backend behavior with it as I would with:
  • ```html
  • action="/behavior.php" method="POST"
  • ```
  • Not associating backend behavior this way is a problem for me because I find it very a focal and comfortable way to associate backend behavior with a simple contact form and I wish I could perhaps exclude that part from the form's default-behavior-prevention.
  • How would you suggest me to cope with that problem?
  • If it matters, in MDN "[Using Fetch](https://developer.mozilla.org/en-US/docs/Web/API/Fetch_API/Using_Fetch)" and [HTMLFormElement.submit()](https://developer.mozilla.org/en-US/docs/Web/API/HTMLFormElement/submit) I didn't find any code example that would "simulate" that attribute-value behavior.
#4: Post edited by (deleted user) · 2021-12-07T08:48:13Z (over 2 years ago)
  • I have prevented the default behavior of a `<form>` but I still need to do a form `action` in the method `POST`, to send submitted form data, by JavaScript.
  • The POST action should still rely on a PHP file (backend.php).
  • * I didn't find the terms `action` or `php` in the [`fetch()`](https://developer.mozilla.org/en-US/docs/Web/API/fetch) documentation
  • * If it's possible, it's unclear to me from the [`submit()`](https://developer.mozilla.org/en-US/docs/Web/API/HTMLFormElement/submit) documentation how to utilize my PHP file (backend.php) with it
  • I have prevented the default behavior of a `<form>` but I still need to do a form `action` in the method `POST`, to send submitted form data by JavaScript.
  • * I didn't find the term `action` in the [`fetch()`](https://developer.mozilla.org/en-US/docs/Web/API/fetch) documentation
  • * I didn't find a way to utilize my backend file (backend.php) with [`submit()`](https://developer.mozilla.org/en-US/docs/Web/API/HTMLFormElement/submit) in the method's documentation
#3: Post edited by (deleted user) · 2021-12-07T08:18:52Z (over 2 years ago)
  • I have prevented the default behavior of a `<form>` but I still need to do a form `action` in the method `POST`, to send data submitted in the form by JavaScript.
  • The POST action should still rely on a PHP file (backend.php).
  • * I didn't find the terms `action` or `php` in the [`fetch()`](https://developer.mozilla.org/en-US/docs/Web/API/fetch) documentation
  • * If it's possible, it's unclear to me from the [`submit()`](https://developer.mozilla.org/en-US/docs/Web/API/HTMLFormElement/submit) documentation how to utilize my PHP file (backend.php) with it
  • I have prevented the default behavior of a `<form>` but I still need to do a form `action` in the method `POST`, to send submitted form data, by JavaScript.
  • The POST action should still rely on a PHP file (backend.php).
  • * I didn't find the terms `action` or `php` in the [`fetch()`](https://developer.mozilla.org/en-US/docs/Web/API/fetch) documentation
  • * If it's possible, it's unclear to me from the [`submit()`](https://developer.mozilla.org/en-US/docs/Web/API/HTMLFormElement/submit) documentation how to utilize my PHP file (backend.php) with it
#2: Post edited by (deleted user) · 2021-12-07T07:50:32Z (over 2 years ago)
  • I have prevented the default behavior of a `<form>` but I still need to do a form `action` in the method `POST`, to send data submitted in the form by JavaScript.
  • The POST action should still rely on a PHP file (backend.php).
  • * I didn't find the terms `action` or `php` in the [`fetch()`](https://developer.mozilla.org/en-US/docs/Web/API/fetch) documentation
  • * If it's possible, it's unclear to me from the [`submit()`](https://developer.mozilla.org/en-US/docs/Web/API/HTMLFormElement/submit) documentation how to refer the JavaScript to my PHP file (backend.php)
  • I have prevented the default behavior of a `<form>` but I still need to do a form `action` in the method `POST`, to send data submitted in the form by JavaScript.
  • The POST action should still rely on a PHP file (backend.php).
  • * I didn't find the terms `action` or `php` in the [`fetch()`](https://developer.mozilla.org/en-US/docs/Web/API/fetch) documentation
  • * If it's possible, it's unclear to me from the [`submit()`](https://developer.mozilla.org/en-US/docs/Web/API/HTMLFormElement/submit) documentation how to utilize my PHP file (backend.php) with it
#1: Initial revision by (deleted user) · 2021-12-07T07:48:55Z (over 2 years ago)
How to initiate a form action (POST, PHP-based) from JavaScript?
I have prevented the default behavior of a `<form>` but I still need to do a form `action` in the method `POST`, to send data submitted in the form by JavaScript.

The POST action should still rely on a PHP file (backend.php).

* I didn't find the terms `action` or `php` in the [`fetch()`](https://developer.mozilla.org/en-US/docs/Web/API/fetch) documentation
* If it's possible, it's unclear to me from the [`submit()`](https://developer.mozilla.org/en-US/docs/Web/API/HTMLFormElement/submit) documentation how to refer the JavaScript to my PHP file (backend.php)