action (HTML attribute)

Detailed explanation of the action attributes of HTML forms

HTML forms are useless without subsequent processing. The action attribute is used to tell the browser which page (or script) to call after pressing the Submit button.

Example

In the following example, the action property tells the browser to send form data to a form processing PHP page (which may convert form data to a more friendly email format):

<code class="language-html"><form action="form-to-email.php" method="post" accept-charset="windows-1252">
  <div>
    <label for="txtname">Name:</label>
  </div>
  ⋮
</form></code>

Attribute value

The value of this element is a URL that points to documents that may be located on the same server (for example, a shared CGI folder containing various form processing scripts), or even a completely standalone server (probably a free form processing service) page or script on.

HTML actionAttribute FAQ

actionWhat is the purpose of the attribute?

The

attribute in HTML is a key component of form processing. It specifies where to send form data when submitting a form. It essentially defines the URL of the page that will process the submitted information. This can be the URL of the script on your server or an external API endpoint. The action attribute is used in the action tag, and its value is usually the file that processes data processing on the server. <form></form>

How to use attribute in HTML? action

To use the

attribute, you need to include it in the action tag of the HTML code. The value of the <form></form> attribute should be the URL to which you want to send the form data. Here is a basic example: action

<code class="language-html"><form action="submit_form.php" method="post">
  <!-- 表单元素 -->
</form></code>

In this example, when the form is submitted, the data is sent to the "submit_form.php" file on the server.

Can relative URL be used in attribute? action

Yes, relative URLs can be used in the

attribute. The relative URL is the URL relative to the current page. For example, if your table unit is on the www.example.com/contact.html page and you set the action property to 'submit_form.php', the form data will be sent to 'www.example.com/submit_form .php”. action

What happens if the attribute is not specified in the form? action

If the

attribute is not specified in the form, the form data will be sent to the URL of the current page. This is the default behavior of the form submission process in HTML. However, it is generally recommended to always specify the action attribute to ensure that form data is sent to the correct location. action

Can external URL be used in the attribute? action

Yes, external URLs can be used in the action attribute. This is useful if you use an external service to process form data. For example, you might use a service like Formspree or Netlify to handle form submissions on static websites. In this case, you will set the action property to the URL provided by the service.

action Can attributes be used with GET and POST methods?

Yes, the action attribute can be used with GET and POST methods. The method attribute in the form tag determines how form data is sent. If the GET method is used, the form data is appended to the URL specified in the action attribute. If the POST method is used, the form data will be included in the body of the HTTP request.

Can I change the action attributes dynamically using JavaScript?

Yes, the action attribute can be changed dynamically using JavaScript. This is useful if you need to change the form submission URL based on user input or other factors. The setAttribute attribute can be changed in JavaScript using the action method.

Is the action attribute in HTML5 required?

No, the action attribute in HTML5 is not required. If the action attribute is not specified, the form data will be sent to the URL of the current page. However, it is generally recommended to always specify the action attribute to ensure that form data is sent to the correct location.

actionCan attribute be used with AJAX?

Yes, the action attribute can be used with AJAX. When submitting a form using AJAX, the action attribute specifies the URL to which the request is sent. However, forms are not submitted in the traditional way, and the AJAX code intercepts form submissions and sends data asynchronously, allowing the page to stay on the same page without refreshing.

Can multiple action properties be used in a single form?

No, multiple action attributes cannot be used in a single form. Each form can only have one action attribute. If you need to send form data to multiple locations, you need to use JavaScript or server-side scripts to handle this.

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