Sort sorting in JavaScript simulation (simple instance) _javascript tips

The principle of sorting data by sort in JavaScript

The sort () method sorts the elements of the array in situ, and returns the arrays. The sort may not be stable. The default is sorted by the Unicode code points of the string;

Syntax: Arr.sort ([comparefunction])

Parameter comparefunction

Optional. Used to specify a function to arrange in a certain order. If omitted, the element is sorted according to the Unicode bit point of the characters of the string being converted to.

If Comparefunction (A, b) is less than 0, then a will be arranged before B;

If Comparefunction (A, B) equals 0, the relative position of A and B is unchanged. Note: The ECMAScript standard does not guarantee this behavior, and not all browsers will follow

If Comparefunction (A, b) is greater than 0, B is arranged before a.

The elements in the array are arranged in a small order of
 var arr=[11,55,22,45,16,87];

  Arr.sort (function (a,b) {return
    a-b;
  });
  Console.log (arr);

Second, the simulation of JavaScript internal data sorting principle

Sortself (Arr,function (a,b) {return
    a-b;
  });
  Console.log (arr);

 function Sortself (ARRAY,FN) {for
    (var i = 0; i < array.length-1; i++) {
      var issorted=true;//default is sorted for
      (v) Ar j = 0; J < Array.length-1-i; J + +) {
        //Call function
        if (FN (array[j],array[j+1]) >0) {//
          Exchange two variables
          var temp=array[j];
          ARRAY[J]=ARRAY[J+1];
          Array[j+1]=temp;
          Issorted=false
        }
      }
      if (issorted) {break;}}}
  

The above simulation JavaScript in the sort order (simple example) is a small series to share all the content, hope to give you a reference, but also hope that we support the cloud habitat community.