Sort array containing objects based on another array [duplicate]

by

We can use the sort() function to do this by passing it a custom function which does the comparison. This function has to return 3 possible values given a or b to compare:

return -1 if a is indexed lower than b

return 0 if a is considered equal to b

return 1 if a is indexed greater than b

With this in mind, we can define a function such as this:

function sortFunction(a,b){
    var indexA = arr.indexOf(a['key']);
    var indexB = arr.indexOf(b['key']);
    if(indexA < indexB) {
        return -1;
    }else if(indexA > indexB) {
        return 1;
    }else{
        return 0;       
    }
}

This function will take in the objects you defined in your array, and find where that value is in the arr array, which is the array you’re comparing to. It then compares the index, and returns the values as needed.

We use this function by passing the function into the sort() function as such:

testArray.sort(sortFunction)

where testArray is the array you’re trying to sort.

You can take a look at here, where I did this example, and you can see the second object in your array being “alerted” to you, before and after the sort function was called. http://jsfiddle.net/Sqys7/

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. How to sort 2 dimensional array by column value?
  8. Sorting an array of objects by property values
  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. Sorting objects by property values
  13. How do I sort an array of objects based on the ordering of another array?
  14. sort Javascript array by two numeric fields
  15. Sort Array by ISO 8601 date
  16. How can you sort an array without mutating the original array?
  17. Sort an array with arrays in it by string
  18. What is the most efficient way to sort an Html Select’s Options by value, while preserving the currently selected item?
  19. Javascript – Sort Array of objects by 2 Properties
  20. Reordering arrays
  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