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I just took a look at this answer, and I noticed the following line of javascript code:
hrs = (hrs - 12) || 12;
My Question:
What does the ‘||’ operator mean when
used in an assignment?
In this case, the code assigns 12 to hrs if hrs-12 = 0 (as JavaScript sees it, 0 = false).
More generally, it assigns the latter value to the variable if the former value evaluates to 0, the empty string, null, undefined, etc.