How can I use JavaScript on the client side to detect if the page was encrypted? How can I use JavaScript on the client side to detect if the page was encrypted? javascript javascript

How can I use JavaScript on the client side to detect if the page was encrypted?


Use window.location.protocol to check if it is https:

function isSecure(){   return window.location.protocol == 'https:';}

Alternatively you can omit specifying "window" if you don't have a locally scoped location.

function isSecure(){   return location.protocol == 'https:';}


As google analytics taught me:

if ("https:" == document.location.protocol) {    /* secure */} else {    /* unsecure */}


Second method for newest browsers:

var secure = window.isSecureContext;

or just get isSecureContext:

if (isSecureContext) {   ...}

More here: https://developer.mozilla.org/en-US/docs/Web/Security/Secure_Contexts#Feature_detection#Feature_detection