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ANGULAR TIP: How to deal with Promise LATE treatment completion

· fullstack

This week, a teammate had to handle a strange phenomenon 🤔 occurring while using an Angular App.

I remind you that Angular uses an asynchronous mechanism.

So, when you use the Angular App, for example clicking 🖱️ the menu, an event is thrown 🚀 , then proceeded later.

Most of the time, everything is fine 👌.

The heck is when you are app handle some events very quickly 💨 and so occur before expected 😮.

So you may have a functional value of a previous call used instead of the one you are waiting for.

And you end with an incorrect ❌ GUI.

There are many ways 💡💡💡 of dealing with such a setting.

But when you deal with 𝐏𝐫𝐨𝐦𝐢𝐬𝐞 (, you can just use the JS keyword 𝐚𝐰𝐚𝐢𝐭 before the call of your method returning a promise.

It will wait ⏱️ for the promise to return its result. YAY! ☺️

An outstanding, tremendous, snazzy gift from JavaScript. 💪

It made my day! 🙏 (I was investigating a complex fix with Angular change detection)


Example from stackoverflow:

#angular #tip #angularProgramming #await