Looking at this simple code : Result in Chrome is : As we can see, the instance methods are on the prototype (for each constructor function) Question: Why are fields, as opposed to methods, not on the prototype? I mean , someField is in Animal not in Lion. Answer This is the intended behavior as seen in ECMAScript – 15.7.14
Tag: class-fields
How to get acornjs to properly style check private class fields and methods?
I’m working on a project where I need to use a style check for my code. I want to use acorn js, however it fails when trying to parse private class fields and class methods. I’ve tried: However it fails when running. This is the error message: I need to be able to use private class fields and methods, but
What is the difference between class fields and properties in Javascript
I’m reading class fields proposal for JavaScript. I don’t understand why the authors call it ‘fields’ and not properties. MDN docs in class article speak about instance properties declared inside constructor and in next section about field declarations declared using new syntax. What is the difference between the two besides the syntax? Answer What is the difference between the two
eslint Parsing error: Unexpected token =
Why is eslint throwing this error? The Javascript runs without issue inside of React Native. The code was taken from the react-navigation example at : https://reactnavigation.org/docs/intro/ Javascript: eslint error: .eslintrc.js file: Answer The syntax is not yet standardised, but a stage-2 proposal for inclusion in Javascript (see “Class Fields” on https://github.com/tc39/proposals). Try adding the following option above “extends” in your
How do I make a “public static field” in an ES6 class?
I’m making a Javascript class and I’d like to have a public static field like in Java. This is the relevant code: This is the error I get: It looks like ES6 modules don’t allow this. Is there a way to get the desired behavior or do I have to write a getter? Answer You make “public static field” using