Why does alert (1 pop up 2) pop up 2? What is the reason
Why does alert (1 pop up 2) pop up 2? What is the reason
1. As long as "| |" is preceded by false, no matter "| |" is followed by true or false, the result returns the value after "| |".
2. As long as "| |" is preceded by true, no matter "| |" is followed by true or false, the result returns the value before "| |".
3. As long as "& &" is preceded by false, no matter whether it is followed by true or false, the result will return the value before "& &";
4. As long as "& &" is preceded by true, whether it is followed by true or false, the result will return the value after "& &";
because 1 = = true, the value after & & is returned
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