I am working on one small application
in that i want to sort the array of objets by two values
one is time stamp and one in string

I tried this below snippet but its not satisfying the below condition

I want this object mentioned in snippet should sorted based on the object should contain sport as cricket first and empty value as second and both are sorted by date ascending order

var content =  [
        {
            "first_name": "musk",
            "sport": "cricket",
            "created_date": "2022-08-12 04:03:08",            
        },
        {
            "first_name": "john",
            "sport": "",
            "created_date": "2022-08-01 23:00:46",
            
        },
         {
            "first_name": "robot",
            "sport": "cricket",
            "created_date": "2022-08-10 23:00:46",
            
        },
        {
            "first_name": "roy",
            "sport": "",
            "created_date": "2022-07-31 23:00:46",
            
        },
]


    content.sort(function compare( a, b ) {
            if ( a.sport < b.sport || (new Date(a.created_date) < new Date(b.created_date))){
                return 1;
            }
            if ( a.sport > b.sport || (new Date(a.created_date) < new Date(b.created_date)) ){
                return -1;
            }
            return 0;
        });
        
console.log(content)

Attached the expected result

expected result

var content =  [
         {
            "first_name": "robot",
            "sport": "cricket",
            "created_date": "2022-08-10 23:00:46",
            
        },
        
          {
            "first_name": "musk",
            "sport": "cricket",
            "created_date": "2022-08-12 04:03:08",            
        },
        {
            "first_name": "roy",
            "sport": "",
            "created_date": "2022-07-31 23:00:46",
            
        },
        {
            "first_name": "john",
            "sport": "",
            "created_date": "2022-08-01 23:00:46",
            
        },
       
]

can anyone help me with what i am doing wrong in snippet

CodePudding user response：

That should do the job:

var content =  [
      {
          "first_name": "musk",
          "sport": "cricket",
          "created_date": "2022-08-12 04:03:08",            
      },
      {
          "first_name": "john",
          "sport": "",
          "created_date": "2022-08-01 23:00:46",

      },
      {
          "first_name": "robot",
          "sport": "cricket",
          "created_date": "2022-08-10 23:00:46",

      },
      {
          "first_name": "roy",
          "sport": "",
          "created_date": "2022-07-31 23:00:46",

      },
];

content.sort(function compare(a, b) {
      // compare the "sport" fields
      if(a.sport > b.sport){
        return -1;
      }
      if(a.sport < b.sport){
        return 1;
      }
      // compare the dates
      if(new Date(a.created_date) < new Date(b.created_date)){
        return -1;
      }
      if(new Date(a.created_date) > new Date(b.created_date)){
        return 1;
      }
      return 0;
});

console.log(content);

content.sort(function compare(a, b) {
      // compare the "sport" fields based on they include "cricket" string or not
       if(a.sport.includes("cricket") && !b.sport.includes("cricket")){
        return -1;
      }
      if(!a.sport.includes("cricket") && b.sport.includes("cricket")){
        return 1;
      }
      // compare the dates
      if(new Date(a.created_date) < new Date(b.created_date)){
        return -1;
      }
      if(new Date(a.created_date) > new Date(b.created_date)){
        return 1;
      }
      return 0;
});

console.log(content);

CodePudding user response：

Check for date comparison only when sport values are equal, like this:

var content =  [
        {
            "first_name": "musk",
            "sport": "cricket",
            "created_date": "2022-08-12 04:03:08",            
        },
        {
            "first_name": "john",
            "sport": "",
            "created_date": "2022-08-01 23:00:46",
            
        },
         {
            "first_name": "robot",
            "sport": "cricket",
            "created_date": "2022-08-10 23:00:46",
            
        },
        {
            "first_name": "roy",
            "sport": "",
            "created_date": "2022-07-31 23:00:46",
            
        },
]


    content.sort(function compare( a, b ) {
            if(a.sport === b.sport) {
               return (new Date(a.created_date) < new Date(b.created_date)) ? -1 : new Date(a.created_date) === new Date(b.created_date) ? 0 : 1
            }
            return a.sport < b.sport ? 1: -1
        });
        
console.log(content)