Detect Visual Composer

Question

Is there a way to detect if a WordPress page is using Visual Composer?

I have 2 different page templates:

1. Default template for regular pages.
2. Temp

Answer 1

Actually _wpb_vc_js_status since 4.8 is not correct, because it was not used anymore. The simplest way to check if page is using visual composer - it is check for vc_row shortcode in content.

$post = get_post();
if ( $post && preg_match( '/vc_row/', $post->post_content ) ) {
    // Visual composer works on current page/post
}