Filter array based on dynamic parameter

Question

Say I have an array of json objects which looks like below:

var codes = [{
            "code_id": "1",
            "code_name": "code 1",            ,
             }, {
            "code_id": "2",
            "code_name": "code889",

             },
        // ... () ...    
             ]

How can I filter codes array based on dynamic input parameter?

So I am looking for a generic function which will take input array and key and value as i/p.

var filteredCodes = getFilteredCodes(codes, "code_id", 2);

Thanks.

kukkuz · Accepted Answer · 2016-12-19 16:59:01Z

10

Use Array.prototype.filter to filter out the result - see demo below:

var codes = [{"code_id": "1","code_name": "code 1"}, {"code_id": "2","code_name": "code889"}];

function getFilteredCodes(array, key, value) {
  return array.filter(function(e) {
    return e[key] == value;
  });
}

var filteredCodes = getFilteredCodes(codes, "code_id", 2);

console.log(filteredCodes);

answered Dec 19, 2016 at 16:59

kukkuz

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Nina Scholz · Accepted Answer · 2016-12-19 17:00:39Z

3

You could use Array#filter with the key and value.

function getFilteredCodes(array, key, value) {
    return array.filter(function (o) {
        return o[key] === value;
    });
}

var codes = [{ "code_id": "1", "code_name": "code 1", }, { "code_id": "2", "code_name": "code889" }],
    filteredCodes = getFilteredCodes(codes, "code_id", "2");

console.log(filteredCodes);

answered Dec 19, 2016 at 17:00

Nina Scholz

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kevin ternet · Accepted Answer · 2016-12-19 17:06:05Z

3

Or the function in an only line with arrow notation

var codes = [{ "code_id": "1", "code_name": "code 1", }, { "code_id": "2", "code_name": "code889" }];
var getFilteredCodes = (array, key, value) => array.filter(x => x[key] === value);
var FilteredCodes = getFilteredCodes(codes, "code_id", "2");
console.log(FilteredCodes);

answered Dec 19, 2016 at 17:06

kevin ternet

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Comments

Adrian Zelada Torrez · Accepted Answer · 2016-12-19 17:02:01Z

2

function getFilteredCodes(poolArray,key,val){
    return poolArray.filter(function(item,ind){
        return item[key]==val;
    });
}

answered Dec 19, 2016 at 17:02

Adrian Zelada Torrez

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