javascript - 将特定的预定义参数传递给函数

Question

就这样吧:

let something = (a , b ,  c = 0 ,  d = 0 ,  e = 0) =>
{console.log(`a is ${a}; b is ${b};c is ${c};d is ${d};e is ${e}`)};`

如果我给一个函数两个以上的参数，它会分别接受它们。如果我想将值传递给“e”变量并跳过其他预定义的变量怎么办？

Answer 1

您可以将参数设为对象。这样做有两个好处，首先，您不必担心顺序，也不必将值传递给 c 或 d。

let something = ({a , b ,  c = 0 ,  d = 0 ,  e = 0}) => {
  return `a is ${a}; b is ${b};c is ${c};d is ${d};e is ${e}`;
}
console.log(something({a: 12 , b: 13, e: 51})); //"a is 12; b is 13;c is 0;d is 0;e is 51"