How do I determine whether a page is secure via JavaScript? [duplicate]

Question

I want to know if the page is being accessed via http or https using JavaScript. Is there some sort of isSecure() method, or should I just parse it out of the URL somehow?

Answer 1

location.protocol should do it for you.

(as in:

if (location.protocol === 'https:') {     // page is secure } 

)