电子闪光器sg152怎么接线

Exercises

What is the result of executing each of these lines in the console? Why?
- var a; typeof a;
- var s = '1s'; s++;
- !!"false"
- !!undefined
- typeof -Infinity
- 10 % "0"
- undefined == null
- false === ""
- typeof "2E+2"
- a = 3e+3; a++;
What is the value of v after the following?
```
>>> var v = v || 10;
```
Experiment by first setting v to 100, 0, null, or unset it (delete v).
Write a script that prints out the multiplication table. Hint: use a loop nested inside another loop.