CODEWITHSUNDEEP
javascriptjqueryarraysjson
Kuroyuki Hime
Kuroyuki Hime

Reputation: 41

How to check if the JSON Object array contains the value defined or not?

hello im a newbie in javascript , I need to check if the Object value is listed in the JSON or not. If the yes do something else do another thing.

first i get JSON from ipapi.co/json which return this for example

Thanks Problem Solved!

Upvotes: 0

Views: 104

Answers (2)

Emiel Zuurbier
Emiel Zuurbier

Reputation: 20934

Arrays in JavaScript have some in-build methods which you can do specific tasks with, like the some method in which you can check if one or more parts of the ISP names are partly in the list. It will return true or false which you can use to determine the text of your $("#ip") element.

$.getJSON("https://ipapi.co/json/", function (data) {

  // Create a list of organizations.
  var organizations = ["republik","telekomunikasi","fastnet","indosatm2","telekomunikasi","indosat","cyberindo","biznet","xl","telematika","hutchison","smartfren","mnc","wireless indonesia","antar nusa","biznet","ezecom","win","axis","linknet-fastnet","indonesia","bali","linknet","indosat","antar nusa","indo","firstmedia","s.i","cambodia","neuviz"];

  // Lowercased version of the ISP.
  var isp = data.org.toLowerCase();

  // Check if the lowercased ISP occurs in any of the organizations.
  var orgExists = organizations.some(org => org.includes(isp));

  // Ternary if statement.
  // If orgExists === true, text will be "exist: " + isp.
  // Otherwise text will be "no exist".
  var text = orgExists ? "exist: " + isp : "no exist";

  // Output the text.
  $("#ip").text(text);

});

Upvotes: 0

Marc
Marc

Reputation: 3874

You can combine basic array/object functions to archive your goal. But as i commented on your question, you should define strict filter criterias.

const data = {
    "ip": "103.26.208.254",
    "version": "IPv4",
    "city": "Jakarta",
    "region": "Jakarta",
    "region_code": "JK",
    "country": "ID",
    "country_name": "Indonesia",
    "country_code": "ID",
    "country_code_iso3": "IDN",
    "country_capital": "Jakarta",
    "country_tld": ".id",
    "continent_code": "AS",
    "in_eu": false,
    "postal": null,
    "latitude": -6.1741,
    "longitude": 106.8296,
    "timezone": "Asia/Jakarta",
    "utc_offset": "+0700",
    "country_calling_code": "+62",
    "currency": "IDR",
    "currency_name": "Rupiah",
    "languages": "id,en,nl,jv",
    "country_area": 1919440.0,
    "country_population": 267663435.0,
    "asn": "AS18103",
    "org": "Neuviz Net"
};

// create a regex of each filter value
const filters = [
    "republik",
    "telekomunikasi",
    "fastnet", "indosatm2",
    "telekomunikasi", "indosat",
    "cyberindo", "biznet", "xl",
    "telematika", "hutchison",
    "smartfren", "mnc",
    "wireless indonesia",
    "antar nusa", "biznet",
    "ezecom", "win", "axis",
    "linknet-fastnet", "indonesia",
    "bali", "linknet", "indosat",
    "antar nusa", "indo", "firstmedia",
    "s.i", "cambodia", "neuviz"
].map((v) => {
    return new RegExp(`${v}`, "gi");
});


// get array of values from object
// filter array based on the test criteria
let matches = Object.values(data).filter((v) => {

    // conver every value to astring
    let value = String(v).toLowerCase();

    // test each filter on value
    return filters.some((filter) => {

        // test the regular expression on the value
        return filter.test(value);

    });

});


if (matches.length > 0) {

    console.log("Filter matched!", matches);

} else {

    console.log("Filte *not* matched")

}

The code is well documented, if you dont understand a snippet/chunk, let me know. If it dosnt work like expected, let me know too!

Happy coding!

Upvotes: 1

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