php 向页脚添加JS，HTML或任何脚本

Posted 2021-05-04

<?php

function footer_script() { ?>

	  <!-- Load Facebook SDK for JavaScript -->
	  <div id="fb-root"></div>
	  <script>
			(function(d, s, id) {
				  var js, fjs = d.getElementsByTagName(s)[0];
				  if (d.getElementById(id)) return;
				  js = d.createElement(s); js.id = id;
				  js.src = 'https://connect.facebook.net/en_US/sdk/xfbml.customerchat.js#xfbml=1&version=v2.12&autoLogAppEvents=1';
				  fjs.parentNode.insertBefore(js, fjs);
			}(document, 'script', 'facebook-jssdk'));
	  </script>

	  <!-- Your customer chat code -->
	  <div class="fb-customerchat"
			attribution="setup_tool"
			page_id="218312828293771">
	  </div>

<?php }
add_action('wp_footer', 'footer_script');