为什么我的RegEx可以在PHP中工作，而不能在JavaScript中工作？

Question

I can't get those RegEx pattern to work with JavaScript (in PHP they work):

/^[^\/home\/]/
/^\/home\/$/
/^\/home\/.+\/.+$/

I want to allow input like this:

/home/username

What I don't want is:

/home/
/username
/home/username/info

Here is my code:

var regex1 = /^[^\/home\/]/;
var regex2 = /^\/home\/$/;
var regex3 = /^\/home\/.+\/.+$/;
if( regex1.test(homedir)
|| regex2.test(homedir)
|| regex3.test(homedir) ) { ... }

I have no errors in the console.

Could someone explain to me why it is not working in JavaScript?

EDIT

I changed it to /^\\/home\\/[A-Za-z0-9]+$/ and now it's working:

var rgx = /^\/home\/[A-Za-z0-9]+$/;
if( !rgx.test(homedir) ) { ... }

Answer 1

Remove the string start Regex parameter ^

You will now have: \\/home\\/.+\\/.+$

Example built here showing validation: Regex Home URL example