javascript - Making a es6 variable global in a class - Stack Overflow

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What I'm trying to do is make a variable which I can use across different functions in the class. But for some reason whenever I write let variable above the constructor I get 'Unexpected token. A constructor, method, accessor, or property was expected.

Tried it with a var and I pretty much get the same result

class ClassName {

  let variable;

  constructor() {
    variable = 1;  
  }
  
  function() {
    console.log(variable + 1);  
  }
  
}

What I'm trying to do is make a variable which I can use across different functions in the class. But for some reason whenever I write let variable above the constructor I get 'Unexpected token. A constructor, method, accessor, or property was expected.

Tried it with a var and I pretty much get the same result

class ClassName {

  let variable;

  constructor() {
    variable = 1;  
  }
  
  function() {
    console.log(variable + 1);  
  }
  
}

• javascript
• ecmascript-6

Share Improve this question Follow asked Dec 18, 2016 at 19:34 a.aneva.anev 13522 gold badges44 silver badges1111 bronze badges 1

• 1 See Classes on MDN. – Michał Perłakowski Commented Dec 18, 2016 at 19:38

Add a ment  | 

1 Answer 1

Sorted by: Reset to default 9

You should access the variable as a property of this:

class ClassName {
  constructor() {
    this.variable = 1;  
  }
  someOtherFunction() {
    console.log(this.variable + 1); // 2
  }
}

new ClassName().someOtherFunction();

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