// 數字，字串型別轉字串

String()

// 字串擷取前幾位字元

需要擷取的字串.substring(0, 幾)

// 小數點後保留兩位小數（四捨五入）

var data = 3.1415926535
data.toFixed(2) // 3.14
var data1 = 3.1455926535
data.toFixed(2) // 3.15

//陣列排序——從小到大

export const sortArray = (arr) => {
  var interval = parseInt(arr.length / 2) // 分組間隔設定
  while(interval > 0){
    for
 
(var i = 0; i < arr.length; i ++){
      var n = i
      while(Number(arr[n].distance) < Number(arr[n - interval] ? arr[n - interval].distance : '') && n > 0){
        var temp = arr[n]
        arr[n] = arr[n - interval]
        arr[n - interval] = temp
        n = n - interval
      }
    }
    interval 
 
= parseInt(interval / 2)
  }
  return arr
}

我傳入的陣列格式是： [ { address:"鎮江市新區大港興港西路2號", area:"京口區", city:"鎮江市", distance:"213.13" }, { address:"鎮江市新區大港興港西路2號", area:"京口區", city:"鎮江市", distance:"213.31" }, { address:"鎮江市新區大港興港西路2號", area:"京口區", city:"鎮江市", distance:"216.83" }, { address:"鎮江市新區大港興港西路2號", area:"京口區", city:"鎮江市", distance:"218.02" }, { address:"鎮江市新區大港興港西路2號", area:"京口區", city:"鎮江市", distance:"218.06" } ] 如果是這樣格式： [1, 34, 45, 4, 9, 7, 2] 去掉.distance就可以了