在 JavaScript 中对对象周日到周六进行排序

sorting object Sunday to Saturday in javascript

本文关键字：周六进 排序 周日 对象 JavaScript      更新时间：2023-09-26

大家好，我知道这个问题被问了好几次，但我没有得到我问题的确切答案。

// I have array of object like this
data=[
        // "sunday": 1, // << sunday is first day of week      
      {DayOfWeek:"Saturday", TotalCount:30},
      {DayOfWeek:"Friday", TotalCount:10},
      {DayOfWeek:"Monday", TotalCount:23},
      {DayOfWeek:"Sunday", TotalCount:18}, 
      {DayOfWeek:"Wednesday", TotalCount:20}        
    ];
// I need sorted like this:
data=[
        // "sunday": 1, // << sunday is first day of week
      {DayOfWeek:"Sunday", TotalCount:18},  
      {DayOfWeek:"Monday", TotalCount:23},
      {DayOfWeek:"Wednesday", TotalCount:20},
      {DayOfWeek:"Friday", TotalCount:10},
      {DayOfWeek:"Saturday", TotalCount:30}  
    ];

我试过这个，但我无法得到预期的结果。它通过启动字母表给我一个排序数组，例如

周五、周六。

var 排序器 = { "星期日"： 1，//<<星期日是一周的第一天 "星期日"： 1， "星期一"： 2， "星期二"： 3， "星期三"： 4， "星期四"： 5， "星期五"： 6， "星期六"：7 }

  var result= data.sort(function sortByDay(a, b) {
    var day1 = a.DayOfWeek.toLowerCase();
    var day2 = b.DayOfWeek.toLowerCase();
    return sorter[day1] > sorter[day2];
  });

请帮助我，提前谢谢。

您可以使用订单的对象对其进行排序，就像您已经拥有的那样，但您需要差异 

return order[a.DayOfWeek] - order[b.DayOfWeek];

作为排序回调的返回值。

var data = [{ DayOfWeek: "Saturday", TotalCount: 30 }, { DayOfWeek: "Friday", TotalCount: 10 }, { DayOfWeek: "Monday", TotalCount: 23 }, { DayOfWeek: "Sunday", TotalCount: 18 }, { DayOfWeek: "Wednesday", TotalCount: 20 }],
    order = { Sunday: 1, Monday: 2, Tuesday: 3, Wednesday: 4, Thursday: 5, Friday: 6, Saturday: 7 };
data.sort(function (a, b) {
    return order[a.DayOfWeek] - order[b.DayOfWeek];
});
document.write('<pre>' + JSON.stringify(data, 0, 4) + '</pre>');

没有任何内置函数，但制定解决方案应该不会太难。下面是一个示例：

function s(a,b){
    return daysOfWeek.indexOf(a) - daysOfWeek.indexOf(b); // basic sort function that compares the indexes of the two days
}
var inputArray = ["Saturday", "Monday", "Sunday", "Tuesday"]; // input
var daysOfWeek = ["Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday"]; // array of days sorted
console.log(inputArray.sort(s)); // output
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