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Andres
Asked: 2020-12-21 06:42:10 +0800 CST 2020-12-21 06:42:10 +0800 CST

How do I ignore some rows when using the sort function?

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I have an array of objects and I want to sort it by a property, but I want the sort function to ignore some rows.

Suppose I have the following array and would like to ignore index 1:

var datos = [
                {"asd1":"prueba11", "asd2":"prueba12", "asd3":"prueba13", "asd4":"prueba14", "asd5":"prueba15"}, 
                {"asd1":"prueba21", "asd2":"prueba22", "asd3":"prueba23", "asd4":"prueba24", "asd5":"prueba25"}, 
                {"asd1":"prueba11", "asd2":"prueba42", "asd3":"prueba43", "asd4":"prueba44", "asd5":"prueba45"}, 
                {"asd1":"prueba31", "asd2":"prueba32", "asd3":"prueba33", "asd4":"prueba34", "asd5":"prueba35"}, 
                {"asd1":"prueba41", "asd2":"prueba42", "asd3":"prueba43", "asd4":"prueba44", "asd5":"prueba45"}, 
                {"asd1":"prueba51", "asd2":"prueba52", "asd3":"prueba53", "asd4":"prueba54", "asd5":"prueba55"}
            ];

And I have the following function to order:

var x = "asd2";
datos.sort(function(a,b) {return (isNaN(a) && isNaN(b))?((a[x] > b[x]) ? 1 : ((b[x] > a[x]) ? -1 : 0)):(a - b);} );

How can I make it ignore (and keep in the same place) index 1?

javascript

1 Answers

  1. Best Answer

    I leave you an example I do not know if it is the functionality you are looking for, what I did was pass the Data array to a new array and you perform the sort on it, I investigated and I did not find how to directly ignore with any property or function for the Sort, apart from changing your function sort , the comparison in the IF you can change 1 to a variable or whatever you want

    var datos = [
                {"asd1":"prueba11",  "asd3":"prueba13",   "asd2":"prueba12","asd4":"prueba14", "asd5":"prueba15"}, 
                {"asd1":"prueba21", "asd2":"prueba22","asd5":"prueba25" ,"asd3":"prueba23", "asd4":"prueba24"}, 
                {"asd1":"prueba11", "asd2":"prueba42", "asd3":"prueba43", "asd4":"prueba44", "asd5":"prueba45"}, 
                {"asd1":"prueba31", "asd2":"prueba32", "asd3":"prueba33", "asd4":"prueba34", "asd5":"prueba35"}, 
                {"asd1":"prueba41", "asd2":"prueba42", "asd3":"prueba43", "asd4":"prueba44", "asd5":"prueba45"}, 
                {"asd1":"prueba51", "asd2":"prueba52", "asd3":"prueba53", "asd4":"prueba54", "asd5":"prueba55"}
            ];
const datos2 = [];
console.log(datos);
console.log("---------------------------------");

datos.forEach(function(x, i){
console.log(i)
  if(i != 1){
    datos2.push(x);
  }
});

datos2.sort(function (a, b) {
    //console.log("variables: " + a.asd1 +" - "+ b.asd1)
      if (a.name > b.name) {
        return 1;
      }
      if (a.name < b.name) {
        return -1;
      }
      return 0;
    });
    
console.log("----------------Array sin el indice 1-----------------");

console.log(datos2);

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