Question

我想在两个对象值之间找到matching value。我每次都可以迭代数组来获得它。

但我正在寻找一些最简单的方法......任何人都可以帮助我吗？

这是我要找的：

let values = [
  {
    "handlingFee": "0.65",
    "min": "0",
    "max": "50000"
  },
  {
    "handlingFee": "0.60",
    "min": "50000",
    "max": "150000"
  },
  {
    "handlingFee": "0.55",
    "min": "150000",
    "max": "999999999"
  }
];

var findHandlingFee = function(){
    return values[0].handlingFee;
}

findHandlingFee(3000); //handlingFee": "0.65
findHandlingFee(5010); //handlingFee": "0.60"
findHandlingFee(300000); //"handlingFee": "0.55"

Answer 1

您可以使用find方法接受回调功能作为参数。

＆＃13;

let values = [ { "handlingFee": "0.65", "min": "0", "max": "50000" }, { "handlingFee": "0.60", "min": "50000", "max": "150000" }, { "handlingFee": "0.55", "min": "150000", "max": "999999999" } ];

var findHandlingFee = function(value){
    return values.find(function(item){
       return item.min <= value && item.max >= value;
    }).handlingFee;   
}

console.log(findHandlingFee(3000)); //handlingFee": "0.65
console.log(findHandlingFee(50010)); //handlingFee": "0.60"
console.log(findHandlingFee(300000));

＆＃13;

Answer 2

您可以使用array＃filter方法。它将返回一个数组，但可以自定义返回条件

let values = [{
    "handlingFee": "0.65",
    "min": "0",
    "max": "50000"
  },
  {
    "handlingFee": "0.60",
    "min": "50000",
    "max": "150000"
  },
  {
    "handlingFee": "0.55",
    "min": "150000",
    "max": "999999999"
  }
];

function findHandlingFee(val) {
  return values.filter(function(item) {
   // return that object where the val is between max and min value
    return +item.min <= val && +item.max >= val;


  })
}
//[0] since filter return an array,getting only object in 0 index
console.log(findHandlingFee(3000)[0].handlingFee);

找到值之间匹配的最简单方法是什么

2 个答案: