javascript - How do I hide a opt-in script from logged in users? -

i run membership site , have script shows opt-in pop form after visitors on page more 10 seconds. however, pop-up shows public uses our paid members.

how can wrap pop-up <script> in custom javascript code detect presence of "logged-in" body class? if found, script should not fire.

if (document.queryselectorall('.logged-in').length) {     // worst (here) } 

you can use queryselectorall function search dom object on page. , if exists run code.

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might better though have backend handle part , load js logged in users when user actually logged in