This content originally appeared on David Walsh Blog and was authored by David Walsh
Last week I tweeted all of you looking for your best JavaScript Array and Promise tricks, and as always, it didn’t disappoint — I learned quite a bit!
Today’s JavaScript Promise trick is brought to you by Claudio Semeraro: how to use catch to set a default value instead of a try/catch:
// Instead of wrapping this block in a try/catch...
const result = await new Promise(
(resolve, reject) => reject("Because Stone Cold said so")
)
// ...use catch to set the default value (100)
.catch(() => 100);
As a trick I really like what’s this brings; as far as readability and maintenance, if you don’t know the trick, you might get confused. What do you think?
The post Return a Default Value with Promises Using catch appeared first on David Walsh Blog.
This content originally appeared on David Walsh Blog and was authored by David Walsh
David Walsh | Sciencx (2020-12-23T12:28:12+00:00) Return a Default Value with Promises Using catch. Retrieved from https://www.scien.cx/2020/12/23/return-a-default-value-with-promises-using-catch/
Please log in to upload a file.
There are no updates yet.
Click the Upload button above to add an update.