How to filter multidimensional JavaScript array

There is no function for this in Javascript. You have to write your own function like this.

var arr = [{"nid":"31","0":{"tid":"20","name":"Bench Press","objectDate":"2012-02-08","goal":"rep","result":"55.00","comments":"sick!","maxload":"250"},"1":{"tid":"22","name":"Back Squat","objectDate":"2012-02-08","goal":"time","result":"8.00","comments":"i was tired.","maxload":"310"}},{"nid":"30","0":{"tid":"19","name":"Fran","objectDate":"2012-02-07","goal":"time","result":"5.00","comments":null}}];function filterByProperty(array, prop, value){    var filtered = [];    for(var i = 0; i < array.length; i++){        var obj = array[i];        for(var key in obj){            if(typeof(obj[key] == "object")){                var item = obj[key];                if(item[prop] == value){                    filtered.push(item);                }            }        }    }        return filtered;}var byName = filterByProperty(arr, "name", "Fran");var byGoal = filterByProperty(arr, "goal", "time");

The question is about multidimensional arrays. If you like me missed that here are solutions for normal arrays...

2020

filteredArray = array.filter(item => item.name.indexOf('Fran') > -1);

or

filteredArray = array.filter(function(item){    return item.name.indexOf('Fran') > -1);}

2012 version

var result = [];for (var i = 0; i < array.length; i++){    if (array[i].name === 'Fran')    {        result.push(array[i]);    }}

I would create a function for filtering :

function filter(array, key, value){    var i, j, hash = [], item;    for(i =  0, j = array.length; i<j; i++){        item = array[i];        if(typeof item[key] !== "undefined" && item[key] === value){            hash.push(item);        }    }    return hash;}

A more robust solution might be adding a filter method to the prototype:

    `This prototype is provided by the Mozilla foundation and     is distributed under the MIT license.     http://www.ibiblio.org/pub/Linux/LICENSES/mit.license`if (!Array.prototype.filter){  Array.prototype.filter = function(fun /*, thisp*/)  {    var len = this.length;    if (typeof fun != "function")      throw new TypeError();    var res = new Array();    var thisp = arguments[1];    for (var i = 0; i < len; i++)    {      if (i in this)      {        var val = this[i]; // in case fun mutates this        if (fun.call(thisp, val, i, this))          res.push(val);      }    }    return res;  };}

Then simply call:

function filterName (item, index, array) {  return (item.name === "Fran");}var result = object.filter(filterName);