Question

我有20条记录

我想根据Priority字段订购记录。

Priority字段有3个值（High, Medium, Low）

我想分别按顺序显示High, Medium, Low条记录中的记录。

以下是C#版本---＆gt;我需要在 javascript

中执行此操作

`var groupedRecords = records.OrderByDescending(x => x.Priority == "High").ThenByDescending(x > x.Priority == "Medium").ThenByDescending(x > x.Priority == "Low")`

在Javascript中，

var csvRecords = priorities.split(','); //现在我收到混合订单的csv。我需要按顺序。那就是我希望首先所有高记录，然后中等记录和 atlast 低记录。

Answer 1

您可以查看以下简单代码：

var points = [{Name: "House",Priority :"High"}, {Name: "Travel",Priority :"Medium"}, {Name: "Children",Priority :"High"}, {Name: "Personal Loan",Priority :"Low"}, {Name: "Car",Priority :"Medium"}, {Name: "Shopping",Priority :"Low"}];


document.getElementById("demo").innerHTML = JSON.stringify(points);

function myFunction() {
   var priorityArray = ["High", "Medium","Low"]
    points.sort(function(a, b){
        var firstPrio = priorityArray.indexOf( a.Priority) ;
        var secPrio = priorityArray.indexOf(b.Priority)
        return firstPrio -secPrio 
    });
    document.getElementById("sortedArray").innerHTML = JSON.stringify(points);
}

<p>Click the button to sort the array.</p>

<button onclick="myFunction()">Sort it</button>
<br/><br/>
Original Array:

<p id="demo"></p>

Sorted Array:

<p id="sortedArray"></p>

我希望它会对你有所帮助。

Answer 2

试试这个：

Fiddle

代码

var data = [];
var priority = ["low", "medium", "high"];

function createData() {
  for (var i = 0; i < 10; i++) {
    var index = Math.floor((Math.random() * 10) % 3);
    var p = priority[index];
    data.push({
      "index": i,
      "Priority": p
    });
  }
}

function createLI() {
  var ul = document.getElementsByTagName("ul")[0];
  var li = "";
  data.forEach(function(row) {
    li += "<li> " + row.index + " : " + row.Priority + " </li>";
  });
  ul.innerHTML = li;
}

function sortList(sortOrder) {
  var order = (sortOrder == 'desc') ? -1 : 1;
  data.sort(function(a, b) {
    var p1, p2;
    priority.forEach(function(row, index) {
      if (a.Priority == row)
        p1 = index;
      if (b.Priority == row)
        p2 = index;
    })
    if (p1 < p2) return -1 * order;
    if (p1 > p2) return 1 * order;
    return 0;
  });
  createLI();
}

(function() {
  createData();
  createLI();
})()

li {
  list-style-type: none;
  padding: 5px;
  border-bottom: 1px solid #ddd;
  margin-left: -20px;
  width: 100px;
}

<ul></ul>
<button onclick="sortList('asc')">Asc Sort</button>
<button onclick="sortList('desc')">Desc Sort</button>

Answer 3

尝试使用String.prototype.match()与RegExp val + "\.\\w+(?=.*,)", "g"匹配val，后跟任何字符，后跟任何字母数字字符;其中val "High"，"Medium"或"Low"存储在Array.prototype.forEach()内迭代的数组中，利用Array.prototype.concat()展平结果数组{{1}包含从＆＃34;高＆＃34;排序的输入文本to＆＃34; Medium＆＃34;到＆＃34;低＆＃34; 。使用res返回从＆＃34;高＆＃34;中排序的三个数组。 to＆＃34; Medium＆＃34;到＆＃34;低＆＃34;

＆＃13;

res.push()

＆＃13;

Answer 4

使用常量进行排序顺序的简化版本：

数据：

var data = [ { name: 'Andy', priority: 'High' }, { name: 'John', priority: 'Low' }, { name: 'Tim', priority: 'Medium' }, { name: 'Bob', priority: 'Medium' }, { name: 'Lucas', priority: 'Medium' }, { name: 'Mark', priority: 'High' }, { name: 'Fred', priority: 'Low' } ];

<强>代码：

var SORT_ASC = -1; var SORT_DESC = 1; function sort_by_priority ( order ) { var prs = ['High', 'Medium', 'Low']; data.sort(function ( a, b ) { var x = prs.indexOf(a.priority); var y = prs.indexOf(b.priority); if ( x < y ) return -1 * order; if ( x > y ) return 1 * order; return 0; }); }

<强>测试

sort_by_priority(SORT_DESC); console.log(data);

如何在Javascript中订购商品类别

4 个答案:

代码