What is the best way to retrieve the array length in a JavaScript/angularJS i18n file?

Question

What is the best way to retrieve the array length in a JavaScript/angularJS i18n file?

Here is the structure of my translation file:

{
    "RANDOM": [
      {
        "ITEM": "basdf"
      },
      {
        "ITEM": "casdf"
      },
      {
        "ITEM": "dasdf"
      },
      {
        "ITEM": "easdf"
      }
    ]

}

The goal is to display one item randomly:

getQuestion() {
  const sizeOfRandomItems = 4;
  const randomNumber = Math.floor(Math.random() * sizeOfRandomItems);
  return this.$filter('i18n')('RANDOM.' + randomNumber + '.ITEM');
}

The issue arises when adding a new item, as sizeOfRandomItems needs manual updating. Is there a way to dynamically get the array size of RANDOM from the translation file?

I attempted the following:

const arraySize = this.$filter('i18n')('RANDOM'); 
console.log(arraySize.length);

However, I receive a warning:

i18n-translate.js:205 Missing key:

It returns 6 (which represents the number of characters in the key holding the array RANDOM)

javascript json internationalization

Answer 1

Answer №1

If you're open to using a library, one option is to load the JSON data with jQuery, parse it into an array, and then determine the array length. Keep in mind that this solution may become cumbersome if you have a large number of keys, so it's recommended to store the result in a variable for future use.

var length;
function getQuestion() {
  const sizeOfRandomItems = 4;
  const randomNumber = Math.floor(Math.random() * (length ? length : getJsonLength()));
  return this.$filter('i18n')('RANDOM.' + randomNumber + '.ITEM');
}

function getJsonLength() {
  $.getJSON("i18n.json", function(json) {
    var array = JSON.parse(json)
    length = array.length;
  });
}

Answer 2

If you're open to using a library, one option is to load the JSON data with jQuery, parse it into an array, and then determine the array length. Keep in mind that this solution may become cumbersome if you have a large number of keys, so it's recommended to store the result in a variable for future use.

var length;
function getQuestion() {
  const sizeOfRandomItems = 4;
  const randomNumber = Math.floor(Math.random() * (length ? length : getJsonLength()));
  return this.$filter('i18n')('RANDOM.' + randomNumber + '.ITEM');
}

function getJsonLength() {
  $.getJSON("i18n.json", function(json) {
    var array = JSON.parse(json)
    length = array.length;
  });
}

Answer 3

Answer №2

To simplify the process, consider adding an extra item in your translation file that provides the current array length. This way, you can retrieve this information from the translation and use it accordingly.

getQuestion() {
  const sizeOfRandomItems = parseInt(this.$filter('i18n')('RANDOM.LENGTH'), 10);
  const randomNumber = Math.floor(Math.random() * sizeOfRandomItems);
  return this.$filter('i18n')('RANDOM.' + randomNumber + '.ITEM');
}

An even simpler approach would be to directly load the object from the translation file, similar to how it's done in i18next (https://www.i18next.com/objects-and-arrays.html). However, it's uncertain if this functionality is supported in the i18n library you are using.

Answer 4

To simplify the process, consider adding an extra item in your translation file that provides the current array length. This way, you can retrieve this information from the translation and use it accordingly.

getQuestion() {
  const sizeOfRandomItems = parseInt(this.$filter('i18n')('RANDOM.LENGTH'), 10);
  const randomNumber = Math.floor(Math.random() * sizeOfRandomItems);
  return this.$filter('i18n')('RANDOM.' + randomNumber + '.ITEM');
}

An even simpler approach would be to directly load the object from the translation file, similar to how it's done in i18next (https://www.i18next.com/objects-and-arrays.html). However, it's uncertain if this functionality is supported in the i18n library you are using.

What is the best way to retrieve the array length in a JavaScript/angularJS i18n file?

Answer №1

Answer №2

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