How to implement variable Exchange in es6

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Variable exchange method: 1, with the help of the third variable c, the syntax "c", so that the values of variables an and b can be interchangeable; 2, the use of array subscript re-assignment, the syntax "a = [a]; b];"; 3, the use of array deconstruction assignment, syntax "[a] = [b, a];"

The operating environment of this tutorial: windows7 system, ECMAScript version 6, Dell G3 computer.

The method of realizing variable Exchange in es6

Method 1: with the help of third variable

There are two variables an and b, and the third variable c can be used to exchange variables.

Assign a value to c first

Before assigning a b value to a

Finally, assign the c value to b

Var axiom 1 / 1 / 2 / 2 / 1 / 1 / 2

Method 2: re-assign using array subscript

Var a = 3, b = 4TX a = [aMaginb]; b = a [0]; a = a [1]; console.log (ameme b)

Method 3: use the deconstruction assignment of the array to exchange the value of the variable

Var a = 3, b = 4; [console.log b] = [b, a];

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