1

I am creating my first ever plugin, as I am not a programmer, I have been following tutorials and reading the codex, etc.

My plugin consist in showing a notice to users when certain conditions are met, I have written it in jQuery and placed it in a js file which is enqueued by the plugin along with styles.

I have followed a tutorial that simply ads a settings page and a form with a simple text box to save data in the wp options table, I tested and it worked, the data was stored successfully.

How do I now transfer the data from the wp options to my js file, the line where the notice is display is;

jQuery('.notice_container').wrap(<'div id="custom_notice"><span>Hello World....</span></div>')

Thank you for your time.

1

Assuming you're not using AJAX for form submission, you can use wp_localize_script(). Here's a simplified version:

In your plugin file:

function wpse105919_add_scripts(){
  wp_enqueue_script( 'myjs', plugins_url( '/myjs.js', __FILE__ ) );
  wp_localize_script( 'myjs', 'jsLocalizedObject', 'hello world');
}
add_action('wp_enqueue_scripts', 'wpse105919_add_scripts');

contents of myjs.js file:

alert( jsLocalizedObject );

wp_localize_script() will add a global variable called jsLocalizedObject to your document's <head>. IF you view the source of your page, you'll see something like:

<script type='text/javascript'>
/* <![CDATA[ */
var jsLocalizedObject = "hello world";
/* ]]> */
</script>

To get a value from your wp_options table, you can use get_option() and then pass the result instead of the hello world in the wp_localize_script function.

Your code would then look like:

function wpse105919_add_scripts(){
  wp_enqueue_script( 'myjs', plugins_url( '/myjs.js', __FILE__ ) );
  $myoption = get_option('option_name', 'default_value');
  wp_localize_script( 'myjs', 'jsLocalizedObject', $myoption);
}
add_action('wp_enqueue_scripts', 'wpse105919_add_scripts');

and your jQuery part:

jQuery('.notice_container').wrap(<'div id="custom_notice"><span>' + jsLocalizedObject + '</span></div>')

Note that you should use admin_enqueue_script instead if your JS should load in the dashboard.

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.