logo
down
shadow

Typescript overriding extended property within constructor


Typescript overriding extended property within constructor

By : Barış Saçıkara
Date : November 17 2020, 11:55 AM
will be helpful for those in need Property initializers are inserted right at the top of the constructor before the manually entered body of the constructor. So
code :
class Person {
    public type:string = 'Generic Person';
    public constructor() {
        console.log(this.type);
    }
}
var Person = (function () {
    function Person() {
        this.type = 'Generic Person';
        // NOTE: You want a different value for `type`
        console.log(this.type);
    }
    return Person;
})();
interface Function{name?:string;}

class Person {    
    public constructor() {
        console.log(this.constructor.name);
    }
}

class Clown extends Person {    
}

var person = new Person(), // 'Person'
    clown = new Clown(); // 'Clown'

console.log(person.constructor.name); // 'Person'
console.log(clown.constructor.name); // 'Clown'


Share : facebook icon twitter icon
Error when overriding constructor of extended class

Error when overriding constructor of extended class


By : Kyle Enzweiler
Date : March 29 2020, 07:55 AM
help you fix your problem The reason for that is that you are not calling super. You can check what's happening in the error stack (down to top):
you instantiate ChildClass, and you pass the previously created childMC to the constructor ChildClass extends ParentClass, so when instantiated it always calls the constructor the constructor of ParentClass tries to add something as a child
code :
public function ChildClass(mc:Sprite=null) {
    super(mc);
}
Cannot set/get the property of extended class in typescript

Cannot set/get the property of extended class in typescript


By : Alejandro Gonzalez
Date : March 29 2020, 07:55 AM
With these it helps I have an issue related to setting or getting the value of the extended class in Typescript and angular 2. , If it is a setter, it should be
code :
this.setName = 'User';
Typescript Partial params in constructor and access in extended class

Typescript Partial params in constructor and access in extended class


By : Seanatronic
Date : March 29 2020, 07:55 AM
wish help you to fix your issue Base doesn't have a member called prop1, Extended does.
You can make Base generic:
code :
class Base<T extends Base = any> {
    constructor(public defaultValues: Partial<T>) {
        ...
    }
}

class Extended extends Base<Extended> {
    public prop1: boolean;

    public method1() {
        this.defaultValues.prop1;
    }
}
class Base<T extends Base<any>> {
    constructor(public defaultValues: Partial<T>) {

    }
}
class Base<T extends Base<any>> {
    constructor(public defaultValues: T) {
        if (defaultValues) {
            for (const [key, value] of Object.entries(defaultValues)) {
                this[key as keyof this] = value;
            }
        }
    }
}
Default property value in React component with extended props using TypeScript 3

Default property value in React component with extended props using TypeScript 3


By : Philippe Rivat
Date : March 29 2020, 07:55 AM
should help you out Props requires className prop. In case it's optional, depending on how the interface is used, it should be marked as such either in interface itself:
code :
interface Props extends WithNamespaces {
  className?: string;
}
class Comp extends Component<Partial<Props>> {
  static defaultProps: Props = {
    className: ''
  }; 
  ...
}
How to exclude interface property from extended class in typescript

How to exclude interface property from extended class in typescript


By : user172096
Date : March 29 2020, 07:55 AM
I wish did fix the issue. It's totally against concept of inheritance.
In my opinion you should splitIBasicFunctionalityProps interface into two separate interfaces and implement them as needed. This way you could achieve desired behaviour.
Related Posts Related Posts :
  • How to debug Vue application with google chrome
  • html 5 web app cache download complete javascript alert?
  • Ember.js setupController fired only once
  • How to validate a currency input
  • How to convert my Array of data to key & value pair
  • Statistics circles in CSS
  • So I wanted to make a trig solver in javascript?
  • Showing HighCharts series name on x-axis and in legend
  • In Rails, how can we pass parameters in script?
  • Build Fails: `npm rebuild node-sass --force`
  • Angular Datepicker change dateformat
  • Trying to extract data from between two sets of characters
  • Configuring Jest in WebStorm
  • Uncaught Error: Syntax error, unrecognized expression: tr.ec_portfolio_title,
  • JQuery fading in fading out continuously
  • Unexpected end of input (Line 1) and Undefined Function?
  • How to animate the width of a div slowly with jquery
  • JavaScript + RegEx Complications- Searching Strings Not Containing SubString
  • SignalR - Unable to get property 'client' of undefined or null reference
  • full calendar not displaying when loaded (with backbone)
  • Angular: Update service and share data between controllers
  • ReplaceAll Google script
  • Search for matching LI items in separate UL
  • Access arguments of an... argument
  • Customizing Google custom search jsapi (query strings)
  • React | Can´t load Images > Module not found
  • Dynamically creating buttons in DOJO
  • 404 Not Found in AJAX post call
  • How do I find out, using javascript, what software opened and running my application?
  • Javascript to check the status of wireless connection
  • StarDict support for JavaScript and a Firefox OS App
  • Phonegap event Resume
  • call javascript function on ENTER key press?
  • When is the best time to remove no-js classes from the html tag
  • Recommended email sending languages
  • setInterval not working properly with chrome
  • Does IE create new scope for each script tag?
  • Uncaught SyntaxError: Unexpected token < Underscore and parse issues
  • How to pass captured URL to Email Body in HTML
  • How to structure default nested resources?
  • Store all the keys of a JSON object in a variable
  • Need an efficient way to group the Array of object in javascript
  • a sensible approach to highcharts x-axis labels
  • IDE autocompletion for javascript AMD loading style
  • Bootstrap menu disappears after first click setting the ul style to none
  • split ajax json response errors in each field
  • how to add javascript in head in cmsms
  • REGEX: Finding the correct occurrence order of some given special characters in a string
  • How do you preserve a JavaScript date's time zone from browser to server, and back?
  • Return binary result from phantomjs webserver
  • must be listed in the web_accessible_resources manifest key in order to be loaded by pages outside the extension.
  • Replacing a substring of an element's text with another string
  • How do I filter marks greater than or equal to 90 in this array?
  • Modify the text of my radio input button?
  • Clicking on status bar does not scroll to top of app (Trigger.io)
  • Mocha JS: How to highlight specific assertion failure?
  • $.getJSON jquery parsing to HTML
  • Find items of a certain class (a) that are also in other classes (b,c,d)
  • Setting different images for D3 force-directed layout nodes
  • Integrating Dropzone.js with angular
  • shadow
    Privacy Policy - Terms - Contact Us © ourworld-yourmove.org