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A full list of JavaScript operators with examples

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Expose your local PC to Internet from behind firewall and without real IP address

Which is more popular?
Based on our record, Portmap.io seems to be a lot more popular than JavaScript Operator Lookup. While we know about 34 links to Portmap.io, we've tracked only 1 mention of JavaScript Operator Lookup.
Website, pricing, platforms and company facts side by side.
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| Website | joshwcomeau.com | portmap.io |
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Developers, system administrators, and hobbyists who need to access local services remotely or those testing webhooks and other remote internet applications.
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Port Forward without Router using portmap.io
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Did not worked at all. No VPN connections, NO ssh connections... Did not work at all. No option to connect. Not working in my country and "No refund" :( I got fooled with such fake service. NOT RECOMMENDING. use ngrok...
Recommendations tracked on public social media and blogs since March 2021.


If you replace your || with ?? You should get the behaviour you are after. This is a good reference for what the operators do in js: https://joshwcomeau.com/operator-lookup. Source: about 5 years ago
I once used portmap.io for reverse shell in ethical hacking classes. Source: over 3 years ago
So I use portmap.io for OpenVPN like I saw in tutorials but I found out it is not working because my ip didn't change when I looked up what my ip was. Source: over 3 years ago
I have a personal computer in the Jio Network at my home and I want to access it using ssh from another network. But in order to port forward my router I am stuck since Jio uses CGNAT if I am not mistaken and there is no use if I... Source: almost 4 years ago
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