javascript - 检查可变颜色

Question

这个问题在这里已经有了答案:





Check variable equality against a list of values

(15 个回答)


7 个月前关闭。




如何在不使用多个 if/else 语句的情况下让以下函数返回多种颜色类型(不仅是红色，还有橙色、黄色等)？

function isRainbowColor(color){
  if (color === "red"){
  return true;
  }else{
    return false;
  }
}
console.log(isRainbowColor("red"));
 //This returns true, but only for one color at a time.  How can I add onto ?

Answer 1

创建一组可接受的颜色，并检查 color与 Array.includes()功能。
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/includes

function isRainbowColor(color){
  let acceptableColors = ["red","orange","yellow","blue","green"]
  if (acceptableColors.includes(color)){
  return true;
  }else{
    return false;
  }
}
console.log(isRainbowColor("red"));
console.log(isRainbowColor("green"));
console.log(isRainbowColor("purple"));
 //This returns true, but only for one color at a time.  How can I add onto ?