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make ajax calls to plugin actions in wordpress

<?php
add_action('wp_ajax_my_action', 'my_action_callback');
function my_action_callback() {
	global $wpdb; // this is how you get access to the database
	$name = $_POST['name'];
	echo 'Hello, '.$name;
	die(); // this is required to return a proper result
}

add_action('wp_print_footer_scripts', 'my_action_javascript');

function my_action_javascript() {
?>
<script type="text/javascript" >
	var ajaxurl='<?php echo get_site_url(); ?>/wp-admin/admin-ajax.php';
jQuery(document).ready(function($) {
	var myname=prompt('Enter your name','');
	var data = {
		action: 'my_action',
		name: myname
	};
	jQuery.post(ajaxurl, data, function(response) {
		alert('Server response: ' + response);
	});
});
</script>
<?php
}
?>
https://snipt.net/embed/b318615c5b2d04df639aba65a7acef26/
/raw/b318615c5b2d04df639aba65a7acef26/
b318615c5b2d04df639aba65a7acef26
php
PHP
29
2019-08-18T04:43:32
True
False
False
/api/public/snipt/28792/
make-ajax-calls-to-plugin-actions-in-wordpress
<table class="highlighttable"><tr><td class="linenos"><div class="linenodiv"><pre><a href="#L-1"> 1</a> <a href="#L-2"> 2</a> <a href="#L-3"> 3</a> <a href="#L-4"> 4</a> <a href="#L-5"> 5</a> <a href="#L-6"> 6</a> <a href="#L-7"> 7</a> <a href="#L-8"> 8</a> <a href="#L-9"> 9</a> <a href="#L-10">10</a> <a href="#L-11">11</a> <a href="#L-12">12</a> <a href="#L-13">13</a> <a href="#L-14">14</a> <a href="#L-15">15</a> <a href="#L-16">16</a> <a href="#L-17">17</a> <a href="#L-18">18</a> <a href="#L-19">19</a> <a href="#L-20">20</a> <a href="#L-21">21</a> <a href="#L-22">22</a> <a href="#L-23">23</a> <a href="#L-24">24</a> <a href="#L-25">25</a> <a href="#L-26">26</a> <a href="#L-27">27</a> <a href="#L-28">28</a> <a href="#L-29">29</a></pre></div></td><td class="code"><div class="highlight"><pre><span></span><span id="L-1"><a name="L-1"></a><span class="cp">&lt;?php</span> </span><span id="L-2"><a name="L-2"></a><span class="nx">add_action</span><span class="p">(</span><span class="s1">&#39;wp_ajax_my_action&#39;</span><span class="p">,</span> <span class="s1">&#39;my_action_callback&#39;</span><span class="p">);</span> </span><span id="L-3"><a name="L-3"></a><span class="k">function</span> <span class="nf">my_action_callback</span><span class="p">()</span> <span class="p">{</span> </span><span id="L-4"><a name="L-4"></a> <span class="k">global</span> <span class="nv">$wpdb</span><span class="p">;</span> <span class="c1">// this is how you get access to the database</span> </span><span id="L-5"><a name="L-5"></a> <span class="nv">$name</span> <span class="o">=</span> <span class="nv">$_POST</span><span class="p">[</span><span class="s1">&#39;name&#39;</span><span class="p">];</span> </span><span id="L-6"><a name="L-6"></a> <span class="k">echo</span> <span class="s1">&#39;Hello, &#39;</span><span class="o">.</span><span class="nv">$name</span><span class="p">;</span> </span><span id="L-7"><a name="L-7"></a> <span class="k">die</span><span class="p">();</span> <span class="c1">// this is required to return a proper result</span> </span><span id="L-8"><a name="L-8"></a><span class="p">}</span> </span><span id="L-9"><a name="L-9"></a> </span><span id="L-10"><a name="L-10"></a><span class="nx">add_action</span><span class="p">(</span><span class="s1">&#39;wp_print_footer_scripts&#39;</span><span class="p">,</span> <span class="s1">&#39;my_action_javascript&#39;</span><span class="p">);</span> </span><span id="L-11"><a name="L-11"></a> </span><span id="L-12"><a name="L-12"></a><span class="k">function</span> <span class="nf">my_action_javascript</span><span class="p">()</span> <span class="p">{</span> </span><span id="L-13"><a name="L-13"></a><span class="cp">?&gt;</span><span class="x"></span> </span><span id="L-14"><a name="L-14"></a><span class="x">&lt;script type=&quot;text/javascript&quot; &gt;</span> </span><span id="L-15"><a name="L-15"></a><span class="x"> var ajaxurl=&#39;</span><span class="cp">&lt;?php</span> <span class="k">echo</span> <span class="nx">get_site_url</span><span class="p">();</span> <span class="cp">?&gt;</span><span class="x">/wp-admin/admin-ajax.php&#39;;</span> </span><span id="L-16"><a name="L-16"></a><span class="x">jQuery(document).ready(function($) {</span> </span><span id="L-17"><a name="L-17"></a><span class="x"> var myname=prompt(&#39;Enter your name&#39;,&#39;&#39;);</span> </span><span id="L-18"><a name="L-18"></a><span class="x"> var data = {</span> </span><span id="L-19"><a name="L-19"></a><span class="x"> action: &#39;my_action&#39;,</span> </span><span id="L-20"><a name="L-20"></a><span class="x"> name: myname</span> </span><span id="L-21"><a name="L-21"></a><span class="x"> };</span> </span><span id="L-22"><a name="L-22"></a><span class="x"> jQuery.post(ajaxurl, data, function(response) {</span> </span><span id="L-23"><a name="L-23"></a><span class="x"> alert(&#39;Server response: &#39; + response);</span> </span><span id="L-24"><a name="L-24"></a><span class="x"> });</span> </span><span id="L-25"><a name="L-25"></a><span class="x">});</span> </span><span id="L-26"><a name="L-26"></a><span class="x">&lt;/script&gt;</span> </span><span id="L-27"><a name="L-27"></a><span class="cp">&lt;?php</span> </span><span id="L-28"><a name="L-28"></a><span class="p">}</span> </span><span id="L-29"><a name="L-29"></a><span class="cp">?&gt;</span><span class="x"></span> </span></pre></div> </td></tr></table>
ajax, javascript, jquery, php, wordpress