How to implement the exchange method of two variable values ​​​​in JS

This article mainly introduces how to realize that two variables are worth exchanging without the intermediate variable temp in JS. Friends in need can refer to it

1. Use addition and subtraction;

var a=1;
var b=2;
a=a+b;
b=a-b;
a=a-b;

2. Use multiplication and division (multiplication and division are more like the mapping of addition and subtraction to multiplication and division operations)

var a=1;
var b=2;
 a = a * b;
 b = a / b;
 a = a / b;

Note: This method can exchange integers and floating point Type numeric variables, but there may be a loss of precision when dealing with floating point types, and b cannot be 0 when multiplying and dividing;

3. Flexibility of using arrays

var a=1;
var b=2;
a=[b,b=a][0];

The above is what I compiled for everyone. I hope it will be helpful to everyone in the future.

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