'/ ='运算符在JavaScript中的含义是什么？

Question

I came across this looking at the source for some physics animations in JavaScript found here on github where he's written this

if (this._position < 0) this._position /= 3;

A quick Google yielded nothing, anyone know?

Answer 1

The operator is shorthand division operator . It is equivalent to

this.position = this.position / 3;

The division will be performed first and then the result will be assigned to the dividend.

Quoting from MDN

The division assignment operator divides a variable by the value of the right operand and assigns the result to the variable.

Answer 2

它是等于+=或-=的除法

Answer 3

This is a division asignment operator: This performs the following operation: Ex:

var x=10,y=2;
x=x/y;
/*
which is equivalent to x/=y;
and returns 5
*/