javascript - 按属性值对对象的javascript数组进行排序并按条件重新排序

Question

我有一个对象数组，比如:

    var newArray = [
      {value : "P1"},
      {value : "P2/S2"},
      {value : "P2"},
      {value : "P1"},
      {value : "P1/S2"},
      {value : "P1/S3"},
      {value : "P2/S1"},
      {value : "P1/S3"},
      {value : "P2/S2"},
      {value : "P1"},
      {value : "P2"},
      {value : "P3"}
    ];
    
    function compare( a, b ) {
      if ( a.value < b.value ){
        return -1;
      }
      if ( a.value > b.value ){
        return 1;
      }
      return 0;
    }
    
    newArray.sort( compare );
    console.log(newArray);

[{"value":"P1"},{"value":"P1"},{"value":"P1"},{"value":"P1/S2"},{"value":"P1/S3"},{"value":"P1/S3"},{"value":"P2"},{"value":"P2"},{"value":"P2/S1"},{"value":"P2/S2"},{"value":"P2/S2"},{"value":"P3"}]

但是如果P值之后没有S值，我在这里重新排列排序。如果没有 S 值，P 值应该是低优先级。我期待这样的结果:

[{"value":"P1/S2"},{"value":"P1/S3"},{"value":"P1/S3"},{"value":"P1"},{"value":"P1"},{"value":"P1"},{"value":"P2/S1"},{"value":"P2/S2"},{"value":"P2/S2"},{"value":"P2"},{"value":"P2"},{"value":"P3"}]

Answer 1

您可以添加后缀并将较小的字符串排序到底部。

function compare({ value: a }, { value: b }) {
    a += 'ZZZ';
    b += 'ZZZ';
    return a > b || -(a < b);
}

var array = [{ value: "P1" }, { value: "P2/S2" }, { value: "P2" }, { value: "P1" }, { value: "P1/S2" }, { value: "P1/S3" }, { value: "P2/S1" }, { value: "P1/S3" }, { value: "P2/S2" }, { value: "P1" }, { value: "P2" }, { value: "P3" }];
   
array.sort(compare);

console.log(array);

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