JavaScript tips — Remove undefined values from an array

The built-in filter method on #javascript arrays makes it easy to remove undefined values.

To only removed undefined values, use:

This will return a new array with all undefined values from 'myArray' removed. This does not modify the original array.

If you search online, you may see other resources suggesting doing this using:

or

These approaches may not be what you want as they will remove every falsy value from the array (such as 0, empty strings, and false) along with the undefined values

[grathiumsoftwares]

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[baodoan]

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