I'll just briefly explain what that && does, for everyone not understanding what you mean:
&&
&& returns the value of the right-hand expression when both are truthy.
Same with ||: It returns the left-hand expression if it's truthy, or the right-hand one of the first one was falsey.
||
See the descriptions of the logical operators (and the examples) on MDN for more information.
So && can be used like 'when the left expression is truthy, return the right-hand (or run a function)'.
E.g.
condition && doThis()
And || can be used to provide a default value (or also run a function or something).
someVariable = someVariable || 0 someVariable || varIsFalsey()
Hope this was not too confusing.
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I'll just briefly explain what that
&&does, for everyone not understanding what you mean:&&returns the value of the right-hand expression when both are truthy.Same with
||: It returns the left-hand expression if it's truthy, or the right-hand one of the first one was falsey.See the descriptions of the logical operators (and the examples) on MDN for more information.
So
&&can be used like 'when the left expression is truthy, return the right-hand (or run a function)'.E.g.
And
||can be used to provide a default value (or also run a function or something).Hope this was not too confusing.