Reordering arrays

by

The syntax of Array.splice is:

yourArray.splice(index, howmany, element1, /*.....,*/ elementX);

Where:

  • index is the position in the array you want to start removing elements from
  • howmany is how many elements you want to remove from index
  • element1, …, elementX are elements you want inserted from position index.

This means that splice() can be used to remove elements, add elements, or replace elements in an array, depending on the arguments you pass.

Note that it returns an array of the removed elements.

Something nice and generic would be:

Array.prototype.move = function (from, to) {
  this.splice(to, 0, this.splice(from, 1)[0]);
};

Then just use:

var ar = [1,2,3,4,5];
ar.move(0,3);
alert(ar) // 2,3,4,1,5

Diagram:

Algorithm diagram

More Related Contents:

  1. Sorting array of object based on range of Numbers of String [closed]
  2. Convert string into several integer arrays [duplicate]
  3. consider a string which has question marks, numbers , letters [closed]
  4. Sort array of objects by string property value
  5. How to sort an array of integers correctly
  6. Javascript Array.sort implementation?
  7. Sorting an array of objects by property values
  8. How to sort array inside collection record in MongoDB?
  9. Sort mixed alpha/numeric array
  10. Sorting arrays numerically by object property value
  11. How to sort numbers correctly with Array.sort()? [duplicate]
  12. How do I sort an array of objects based on the ordering of another array?
  13. sort Javascript array by two numeric fields
  14. Sort Array by ISO 8601 date
  15. How can you sort an array without mutating the original array?
  16. Sort an array with arrays in it by string
  17. What is the most efficient way to sort an Html Select’s Options by value, while preserving the currently selected item?
  18. Javascript – Sort Array of objects by 2 Properties
  19. Sort array containing objects based on another array [duplicate]
  20. Does .sort function change original array?
  21. Javascript array sort and unique
  22. Remove duplicate objects from an array using javascript
  23. Populate nested object from array?
  24. Javascript – sorting array by multiple criteria
  25. use Lodash to sort array of object by value
  26. Sorting an Array of JavaScript Objects a Specific Order (using existing function)
  27. Sort a Javascript Array by frequency and then filter repeats
  28. sorting object Sunday to Saturday in javascript
  29. Javascript: Sort array of arrays by second element in each inner array
  30. How to sort an array of objects by date?

Leave a Comment