Search in array of objects with object javascript

Question

I have an array like this

var userdata = [
    {"id":1,"gender":"M","first":"John","last":"Smith","city":"Seattle, WA","status":"Active"},
    {"id":2,"gender":"F","first":"Kelly","last":"Ruth","city":"Dallas, TX","status":"Active"},
    {"id":3,"gender":"M","first":"Jeff","last":"Stevenson","city":"Washington, D.C.","status":"Active"},
    {"id":4,"gender":"F","first":"Jennifer","last":"Gill","city":"Seattle, WA","status":"Inactive"}
]

I need to filter this array on some conditions. The form of these conditions are like this.

var search_object = {gender:"M",city:"Seattle, WA"}
// Gender = M and city =  'Seattle, WA'
var search_object1 = {gender:"M"}
var search_object2 = {city:"Seattle, WA"}
// This is same as above
var search_array = {status:["Active","Inactive"]}
// Status Active or Inactive
var search_array = [{status:"Active"},{status:"Inactive"}]
// Same as above
var search_object1 = {gender:"F"}
var search_array   = [{status:"Active"},{status:"Inactive"}]
//Gender = F and status = Active or Inactive
var search_object = {gender:"F"}
var search_array  = [{status:["Active","Inactive"]}]
// same as above

I have tried looping but failed. Please help or suggest or provide some proper links to get help.

i mean to say i am not javascript expert and failed to provide and and or to filter items — Muhammad Raheel
– Muhammad Raheel, Commented May 21, 2014 at 7:09
Seems like a job for the function appropriately named filter — CodingIntrigue
– CodingIntrigue, Commented May 21, 2014 at 7:17
You have to loop the array! Also the last two search_object are no valid Javascript objects. — Amberlamps
– Amberlamps, Commented May 21, 2014 at 7:18

Karlen Kishmiryan · Accepted Answer · 2014-05-21 08:22:40Z

7

The following code covers all the cases you mentioned.

function search(searchObj, data) {
    if(searchObj instanceof Array) {
        return data.reduce(function(prev, current, index, array) {
             return prev.concat(search(current, data));
        }, []);
    } else {
        var results = data.filter(function(el) {
             for(var prop in searchObj) {
                if(searchObj[prop] instanceof Array) {
                    if(searchObj[prop].indexOf(el[prop]) == -1) {
                        return false;
                    }
                } else
                if(el[prop] !== searchObj[prop]) {
                    return false;
                }
            }

            return true;
        });

        return results;
    }
};

search(search_object, userdata);

Here is the working example in JSFiddle.

And here are some links to the functions I've used above:

edited May 21, 2014 at 8:22

answered May 21, 2014 at 7:24

Karlen Kishmiryan

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7 Comments

Muhammad Raheel Over a year ago

this returns empty result

Karlen Kishmiryan Over a year ago

Okay, as per your update I've updated my solution too. Now it covers all the cases. Check it out.

Muhammad Raheel Over a year ago

thanks i have tested some cases and they are working fine. I will test others when find some time

Muhammad Raheel Over a year ago

Hi! do you think you have done this condition too. Gender = F and status = Active or Inactive. these are surely two separate parameters. How can i combine them in to one to use it

A1rPun Over a year ago

+1 Very nice answer! I'm using this now for searching complex objects :) Refactored it for less bytes..

|

A1rPun · Accepted Answer · 2014-05-21 07:23:29Z

1

Just what RGraham said in the comments, you can use the filter function on arrays.

var search_object = {gender:"M",city:"Seattle, WA"};
var filtered = userdata.filter(function(obj){
    return (obj.gender === search_object && obj.city === search_object.city)
});
filtered[0];//Array with objects that return true;

answered May 21, 2014 at 7:23

A1rPun

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1 Comment

Muhammad Raheel Over a year ago

how can i add obj.dynamic_column coming from the condition not obj.gender

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