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Conditional Loading of Scripts

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Example of loading thickbox and syntaxhighlighter conditionally from the functions.php of a wordpress theme.

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  1. add_action('wp_print_styles','my_conditional_script');
  2.  
  3. function my_conditional_script() {
  4.     global $post;
  5.     if (is_single() && strpos($post->post_content, 'class="thickbox"') !== false) {
  6.         wp_enqueue_script('thickbox');
  7.         wp_enqueue_style('thickbox');
  8.     }
  9.  
  10.     if (is_single() && strpost($post->post_content, '<pre') !== false) {
  11.         $style = get_stylesheet_directory_uri() . '/syntaxhighlighter/style.css';
  12.         wp_register_style('sh-style', $style);
  13.         wp_enqueue_style('sh-style');
  14.         $script = get_stylesheet_directory_uri() . '/syntaxhighlighter/script.js';
  15.         wp_register_style('sh-script', $script);
  16.         wp_enqueue_style('sh-script');
  17.     }
  18. }

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