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

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

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

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Experienced / Expert level questions & answers

Ques 1

What is the purpose of the 'preload' script in Electron?

The 'preload' script is a JavaScript file specified in the Electron BrowserWindow options. It runs in the renderer process and has access to Node.js APIs before the DOM content is loaded. It allows customization of the environment for the renderer process.
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Ques 2

Explain the role of 'webContents' in Electron.

'webContents' is an Electron module that represents the web page content in a window. It allows you to control and manipulate the content, handle events, and execute scripts in the renderer process.
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Ques 3

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

The 'autoUpdater' module is used to enable automatic updates for Electron applications. It allows apps to check for updates and download new versions from a server.
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Ques 4

Explain how Electron handles security and sandboxing.

Electron uses the Chromium browser, which employs a multi-process architecture with a main process and renderer processes. Each renderer process is sandboxed to enhance security, preventing direct access to Node.js modules and system resources.
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Ques 5

What is the 'contextIsolation' option in Electron and why is it used?

The 'contextIsolation' option, when set to true, isolates the renderer processes by running JavaScript code in a separate context. This enhances security by preventing the renderer processes from directly accessing the 'require' function and other Node.js modules.
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Ques 6

Explain the role of the 'BrowserView' module in Electron.

'BrowserView' is used to embed web content within a window in Electron. It allows developers to create separate views within a single window, each with its own 'webContents' and lifecycle.
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Ques 7

Explain the purpose of the 'session' module in Electron.

The 'session' module allows developers to customize the behavior of the Electron session, such as configuring HTTP headers, handling cookies, and managing browser sessions. It provides methods to intercept requests and responses.
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