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Home / Interview Subjects / Electron.js
WithoutBook LIVE Mock Interviews Electron.js Related interview subjects: 19

Interview Questions and Answers

Know the top Electron.js interview questions and answers for freshers and experienced candidates to prepare for job interviews.

Total 24 questions Interview Questions and Answers

The Best LIVE Mock Interview - You should go through before interview

Know the top Electron.js interview questions and answers for freshers and experienced candidates to prepare for job interviews.

Interview Questions and Answers

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Intermediate / 1 to 5 years experienced level questions & answers

Ques 1

Explain the main process and renderer process in Electron.

The main process manages the lifecycle of the application and creates web pages using renderer processes. Renderer processes are responsible for rendering the UI and run in separate instances for each opened window.
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Ques 2

How can you communicate between the main process and renderer process in Electron?

Inter-process communication (IPC) is used to communicate between the main process and renderer processes. Electron provides modules like 'ipcMain' and 'ipcRenderer' for sending and receiving messages.
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Ques 3

Explain Electron's 'Main' and 'Renderer' threads.

The 'Main' thread manages the Electron application and runs the main script. The 'Renderer' thread runs the web page content and is responsible for rendering the UI. Each Electron window has its own 'Renderer' thread.
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Ques 4

Explain the Electron app life cycle events.

Electron apps have several life cycle events, including 'ready', 'window-all-closed', 'before-quit', 'will-quit', and 'quit'. These events help manage the initialization, window creation, and quitting processes.
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Ques 5

How can you package an Electron application?

Electron applications can be packaged using tools like 'electron-builder' or 'electron-packager'. These tools allow you to package the app for different platforms and architectures.
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Ques 6

What is Electron's 'remote' module used for?

The 'remote' module enables communication and interaction between the main process and renderer processes by allowing objects to be used across processes. It provides a way to access objects from the main process in the renderer process.
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Ques 7

What is the purpose of the 'BrowserWindow' module in Electron?

'BrowserWindow' is used to create and control browser windows in Electron. It allows you to customize window properties, handle events, and control window behavior.
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Ques 8

Explain the concept of 'Electron Prebuilt' and 'Electron' packages.

'Electron Prebuilt' and 'Electron' packages are npm packages that provide Electron binaries. 'Electron Prebuilt' is an older version, while 'Electron' provides the latest stable release. Developers can use these packages to run Electron apps without having to manually install Electron globally.
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Ques 9

How can you handle menu creation in Electron?

Menus in Electron can be created using the 'Menu' module. You can define menu items, submenus, and their functionality. Menus can be attached to specific windows or the application as a whole.
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Ques 10

How can you handle file dialogs in Electron?

Electron provides the 'dialog' module for handling file dialogs. Developers can use methods like 'showOpenDialog' and 'showSaveDialog' to display file selection and save dialogs, respectively.
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Ques 11

How does Electron support multi-window applications?

Electron enables the creation of multiple windows in an application. Each window runs in its own renderer process, providing isolation. Developers can manage these windows using the 'BrowserWindow' module.
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Ques 12

What is the purpose of 'app.on('will-quit', callback)' in Electron?

The 'will-quit' event is emitted before the application is about to quit. Developers can use this event to perform cleanup tasks or prevent the application from quitting by calling 'event.preventDefault()'.
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Ques 13

Explain the 'webPreferences' option in the 'BrowserWindow' module.

The 'webPreferences' option allows developers to configure various preferences for the web page content, including enabling Node.js integration, setting the preload script, and controlling context isolation.
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Ques 14

What is the purpose of the 'globalShortcut' module in Electron?

The 'globalShortcut' module is used to register and unregister global keyboard shortcuts in Electron. It allows developers to define custom key combinations that trigger specific actions in the application.
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Ques 15

How can you access command-line arguments in an Electron app?

Command-line arguments can be accessed using the 'process.argv' array in the main process. The 'remote' module can be used in the renderer process to access command-line arguments from the main process.
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