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Private slots are new and can be created via Static initialisation blocks in classes

barisx answered on March 25, 2022 Popularity 1/10 Helpfulness 1/10

answer Private slots are new and can be created via Static initialisation blocks in classes

related Private slots are new and can be created via Instance and static private fields

Private slots are new and can be created via Static initialisation blocks in classes

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class Translator {
  static translations = {
    yes: 'ja',
    no: 'nein',
    maybe: 'vielleicht',
  };
  static englishWords = [];
  static germanWords = [];
  static { // (A)
    for (const [english, german] of Object.entries(this.translations)) {
      this.englishWords.push(english);
      this.germanWords.push(german);
    }
  }
}


console.log(Translator.englishWords, Translator.germanWords)
//Output -> ["yes", "no", "maybe"], ["ja", "nein", "vielleicht"]

Popularity 1/10 Helpfulness 1/10 Language javascript

Source: dev.to

Tags: javascript private slots static

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Contributed on Mar 25 2022

barisx

0 Answers Avg Quality 2/10

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Private slots are new and can be created via Instance and static private fields

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// ES2022
class InstPrivateClass {
  #privateField1 = 'private field 1'; // (A)
  #privateField2; // (B) required!
  static #staticPrivateField = 'hello';
  constructor(value) {
    this.#privateField2 = value; // (C)
  }
  /**
   * Private fields are not accessible outside the class body.
   */
  checkPrivateValues() {
    console.log(this.#privateField1); // output -> 'private field 1'
    console.log(this.#privateField2); // output -> 'constructor argument'

  }

  static #twice() {
    return this.#staticPrivateField + " " + this.#staticPrivateField;
  }

  static getResultTwice() {
    return this.#twice()
  }
}

const inst = new InstPrivateClass('constructor argument');
inst.checkPrivateValues();


console.log("inst", Object.keys(inst).length === 0) //output -> "inst", true
console.log(InstPrivateClass.getResultTwice()); // output -> "hello hello"

Popularity 1/10 Helpfulness 1/10 Language javascript

Source: dev.to

Tags: static instance javascript private slots

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Contributed on Mar 25 2022

barisx

0 Answers Avg Quality 2/10

Private slots are new and can be created via Static initialisation blocks in classes

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Private slots are new and can be created via Static initialisation blocks in classes

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Private slots are new and can be created via Instance and static private fields

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