JSHint 'nocomma' 选项有什么作用？

Question

documentation says:

This option prohibits the use of the comma operator. When misused, the comma operator can obscure the value of a statement and promote incorrect code.

但我仍然不清楚 JSHint 正在寻找什么场景。有人可以举个例子吗？

Answer 1

MDN: Comma Operator

The comma operator evaluates each of its operands (from left to right) and returns the value of the last operand.

例子

function myFunc() {
  var message = "hello";

  return (message += "howareya", message);
}
// returns "hellohowareya"