CODEWITHSUNDEEP
javascripthttphttps
Simon
Simon

Reputation:

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

Is it possible to detect, on the client side, whether the user is using an encrypted page or not?

Put another way -- I want to know if the URL of the current page starts with http or https.

Upvotes: 53

Views: 30625

Answers (3)

Chris Zalcman
Chris Zalcman

Reputation: 41

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

Upvotes: 4

Rod
Rod

Reputation: 2066

As google analytics taught me:

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

Upvotes: 11

tvanfosson
tvanfosson

Reputation: 532435

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:';
}

Upvotes: 81

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