This is useful for checking for null objects before accessing

Question

their attributes:

var name = o && o.getName();

Can anyone in short explain this with example?

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25.09.2019

16 просмотров

It's got to do with the short circuiting behavior of the logical and operator. If the first operand is falsy, it won't evaluate the second.

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25.09.2019

Banana · Accepted Answer

If you're just dealing with normal objects, this is fine.

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25.09.2019