Object.assign(...) in JavaScript helps with asynchronous updates

Thu, 21 Aug 2025 00:00:00 +0000

In WebSockets: More than tech vanity, I talked about the implicit user value of asynchronous UIs. Today, here’s a neat little JavaScript trick I hadn’t been aware of that makes implementing them a bit easier: Object.assign(...).

Here’s the situation:

Your Angular frontend initially fetches a list of items from the backend. Thanks to Angular’s powerful data binding, many components reference properties of these objects. Later, the backend sends an updated version of one of these items via WebSocket. What now?

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Object.assign(...) in JavaScript helps with asynchronous updates