Alternative usage techniques of javascript && and || algorithms_javascript techniques

&& and || are particularly widely used in the JQuery source code. Since I have not systematically learned js, I can only roughly understand it myself. I hope you can give me some guidance.
A rough understanding is as follows:

a() && b(): If true is returned after executing a(), then b() is executed and the value of b is returned; if false is returned after executing a(), Then the entire expression returns the value of a(), and b() is not executed;
a() || b(): If true is returned after executing a(), the entire expression returns the value of a(), b () is not executed; if false is returned after executing a(), b() is executed and the value of b() is returned;
&& has a higher priority than ||

as follows:
　
Code

Copy code The code is as follows:

alert((1 && 3 || 0) && 4); //Result 4 ①
alert(1 && 3 || 0 && 4); //Result 3 ②
alert(0 && 3 || 1 && 4); //Result 4 ③

Analysis:
Statement ①: 1&&3 returns 3 => 3 || 0 returns 3 => 3&&4 returns 4
Statement ②: Execute 1&&3 first and return 3, then execute 0&&4 and return 0, the final execution result is compared with 3||0 and returns 3
Statement ③: execute 0&&3 first and return 0, then execute 1&&4 and return 4, the final execution result is compared with 0||4 and return 4

Note: non-0 The integers are all true, undefined, null and the empty string "" are false.