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dateDropper Javascript
A full list of JavaScript operators with examples

Tradesyncer
TradeDupe
SyncFutures
MimikTrader
PropSyncX
Tradespace
Trade copier for prop firm futures traders — Tradovate + NT8.
Which is more popular?
Based on our record, JavaScript Operator Lookup seems to be more popular. It has been mentioned 1 time since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | joshwcomeau.com | propcopy.io |
| Platforms | — | |
| Company | — | Startup from Australia · 1 - 9 employees · 2026 |
| Listed in |
In their own words, as submitted to SaaSHub.


No description of JavaScript Operator Lookup yet.
PropCopy is a trade copier for prop firm futures traders. Cloud Tradovate copier works with Apex, TopStep, Tradeify, MyFundedFutures, TakeProfit, TradeDay. NinjaTrader 8 add-on covers brokers outside the Tradovate ecosystem. Sub-500ms execution, full bracket order copying, per-account safety...
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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
Tracking PropCopy since May 2026.
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