Express.js Course
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Beginner

EJS (Embedded JavaScript)

Definition

EJS is a simple templating language that lets you generate HTML markup with plain JavaScript. It retains the exact syntax of HTML while allowing you to inject variables using `<%= variable %>` or run loops using `<% for(...) %>`.

Explain Like I'm New

EJS is a simple templating language that lets you generate HTML markup with plain JavaScript.

Interactive Example

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Interview Questions

basic

  • What is the primary purpose of EJS (Embedded JavaScript) in Express.js?
  • How do you initialize EJS (Embedded JavaScript)?

intermediate

  • How does EJS (Embedded JavaScript) integrate with other middleware components?
  • Can you explain a common use case for EJS (Embedded JavaScript)?

advanced

  • What are the performance implications of EJS (Embedded JavaScript) in a high-traffic production application?
  • How would you debug issues related to EJS (Embedded JavaScript)?

trick

  • Is it possible to achieve the same result as EJS (Embedded JavaScript) without using Express?

Flash Cards

Question

Define EJS (Embedded JavaScript) in your own words.

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Answer

EJS is a simple templating language that lets you generate HTML markup with plain JavaScript.

Question

When should you avoid using EJS (Embedded JavaScript)?

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Answer

It depends on the specific architectural requirements and performance bottlenecks of your application. Overusing it can sometimes lead to tightly coupled code.