How Can I Persist Form Submission State Across Page Reloads?

Persist Variables Between Page Loads

Problem:

You need to capture the form submission event and if the form is submitted, retain this information after the page reloads, allowing you to access it when the page is reloaded.

Incorrect Approach Using Global Variables:

<br>var clicked = false;</p>
<p>$(document).ready(function() {<br>  $("inputtype='submit'").attr("onclick", "form.act.value='detailSearch'; clicked = true;  return true;");</p>
<p>if (clicked == true) {</p>
<pre class="brush:php;toolbar:false">// show hidden fields

} else {

// don't show hidden fields

}
});

This code attempts to store the form submission state in a global variable, but it's ineffective because HTTP is stateless and every page reload resets all variables.

Solutions for Persistent Data Storage:

Query String:

• Update the query string with a parameter indicating form submission.
• On page load, parse the query string to retrieve the submitted form state.

Web Storage:

• With HTML5 Web Storage, you can store data locally on the client-side across page loads using sessionStorage (for temporary data) or localStorage (for longer-term data).

Cookies:

• Cookies are another client-side data storage option that can persist across different domains.

window.name:

• Despite its name, window.name can be used to store string values.
• Unlike cookies, it persists across pages on the same domain, but only within the current tab.

The above is the detailed content of How Can I Persist Form Submission State Across Page Reloads?. For more information, please follow other related articles on the PHP Chinese website!