How to implement typescript class with property as a class in knockout.js?

by arnoldo.moen , in category: Javascript , a month ago

How to implement typescript class with property as a class in knockout.js?

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1 answer

Member

by darion , a month ago

@arnoldo.moen 

To implement a TypeScript class with a property as a class in Knockout.js, you can follow these steps:

  1. Define your TypeScript class with the necessary properties and methods. For example:
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class Person {
    name: KnockoutObservable<string>;
    age: KnockoutObservable<number>;

    constructor(name: string, age: number) {
        this.name = ko.observable(name);
        this.age = ko.observable(age);
    }
}


  1. Create an instance of the class in your ViewModel and bind it using Knockout.js. For example:
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class ViewModel {
    person: Person;

    constructor() {
        this.person = new Person("John Doe", 30);
        ko.applyBindings(this);
    }
}


  1. In your HTML markup, use the Knockout bindings to display and interact with the properties of the class instance. For example:
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<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Knockout.js with TypeScript</title>
</head>
<body>
    <h1>Hello, <span data-bind="text: person.name"></span>!</h1>
    <p>You are <span data-bind="text: person.age"></span> years old.</p>
    
    <script src="https://cdnjs.cloudflare.com/ajax/libs/knockout/3.5.1/knockout-min.js"></script>
    <script src="your-typescript-file.js"></script>
</body>
</html>


Make sure to compile your TypeScript code to JavaScript before running it in the browser. You can do this with a TypeScript compiler like tsc, or by setting up a build process in your IDE or build tool.