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I expect add_action() to specify a hook name and then a function to call when the hook fires, but I came across the text below in &quot;WordPress Web Application Development, 2nd ed on page 29:<br />
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&nbsp;“We need to define AJAX handler functions using the WordPress add_action function:<br />
add_action( ‘wp_ajax_mark_answer_statu<wbr />s’, ‘wpwa_mark_answer_status’ );<br />
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There's no existing hook with the name &quot;wp_ajax_mark_answer_statu<wbr />s&quot; so could someone explain what's going on?<br />
<br />
Thanks for your help.
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I expect add_action() to specify a hook name and then a function to call when the hook fires, but I came across the text below in "WordPress Web Application Development, 2nd ed on page 29:

 “We need to define AJAX handler functions using the WordPress add_action function:
add_action( ‘wp_ajax_mark_answer_status’, ‘wpwa_mark_answer_status’ );

There's no existing hook with the name "wp_ajax_mark_answer_status" so could someone explain what's going on?

Thanks for your help.

Strange use of WordPress add_action()

I expect add_action() to specify a hook name and then a function to call when the hook fires, but I came across the text below in &quot;WordPress Web Application Development, 2nd ed on page 29:

 “We need to define AJAX handler functions using the WordPress add_action function:
add_action( ‘wp_ajax_mark_answer_status’, ‘wpwa_mark_answer_status’ );

There&#39;s no existing hook with the name &quot;wp_ajax_mark_answer_status&quot; so could someone explain what&#39;s going on?

Thanks for your help.

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