Executing JavaScript code on ionic 2 platform

Question

Executing JavaScript code on ionic 2 platform

Recently, I developed a JavaScript algorithm and now I'm looking to implement it in my ionic 2 application. My preference is to avoid the hassle of converting the entire algorithm to typescript. While I managed to run javascript in the index.html page successfully, I am encountering difficulty calling those functions from the .ts files.

I would appreciate any suggestions on integrating my js algorithm into my ionic 2 application, or should I consider transitioning to typescript altogether?

Thank you

javascript typescript ionic2

Answer 1

Answer №1

To utilize JavaScript in TypeScript, you will need (.d.ts) typings definition files. Follow the example below:

If you have a demo.js file with the following content.

var setUserInfo = function (firstName, secondName) {
    console.log("demo function called: " + firstName + " " + secondName);
}

module.exports = { setUserInfo: setUserInfo };

Create a declaration for demo.d.ts as shown:

declare module User {
    function setUserInfo(firstName: string, secondName: string): void;
}

export = User;

Place these two files in the same directory. To use js in your ts file, follow these steps:

1). import * as _ from './demo'; // import the file. The path './demo' should be relative to your current directory

2).

_.setUserInfo("sandeep", "sharma");

// call the method

I hope this explanation is beneficial to you!

Answer 2

To utilize JavaScript in TypeScript, you will need (.d.ts) typings definition files. Follow the example below:

If you have a demo.js file with the following content.

var setUserInfo = function (firstName, secondName) {
    console.log("demo function called: " + firstName + " " + secondName);
}

module.exports = { setUserInfo: setUserInfo };

Create a declaration for demo.d.ts as shown:

declare module User {
    function setUserInfo(firstName: string, secondName: string): void;
}

export = User;

Place these two files in the same directory. To use js in your ts file, follow these steps:

1). import * as _ from './demo'; // import the file. The path './demo' should be relative to your current directory

2).

_.setUserInfo("sandeep", "sharma");

// call the method

I hope this explanation is beneficial to you!

Executing JavaScript code on ionic 2 platform

Answer №1

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