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ecarter/mapOrder.js

Created December 2, 2011 15:40
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  1. ecarter created this gist Dec 2, 2011.
    41 changes: 41 additions & 0 deletions mapOrder.js
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    Original file line number Diff line number Diff line change
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    /**
    * Sort array of objects based on another array
    */

    function mapOrder (array, order, key) {

    array.sort( function (a, b) {
    var A = a[key], B = b[key];

    if (order.indexOf(A) > order.indexOf(B)) {
    return 1;
    } else {
    return -1;
    }

    });

    return array;
    };


    /**
    * Example:
    */

    var item_array, item_order, ordered_array;

    item_array = [
    { id: 2, label: 'Two' }
    , { id: 3, label: 'Three' }
    , { id: 5, label: 'Five' }
    , { id: 4, label: 'Four' }
    , { id: 1, label: 'One'}
    ];

    item_order = [1,2,3,4,5];

    ordered_array = mapOrder(item_array, item_order, 'id');

    console.log('Ordered:', JSON.stringify(ordered_array));