Ejs

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ejs is an open-source JavaScript templating engine that allows developers to generate dynamic HTML content. It supports control flow, loops, and includes, making it suitable for web application development.

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At a glance

Pricing

Open Source

Free tier

Yes

API

Yes

Skill level

Technical

About

What is ejs?

ejs is an open-source JavaScript templating engine designed for generating dynamic HTML content. It provides features such as control flow with `<% %>` tags, escaped output with `<%= %>`, and unescaped raw output with `<%- %>`. Developers can use newline-trim mode and whitespace-trim mode for cleaner templates. The engine supports custom delimiters, includes, and client-side rendering. It also offers static caching of intermediate JavaScript and templates, complying with the Express view system. ejs is compatible with both CommonJS and ES Modules, supporting a wide range of Node.js versions and modern browsers.

Best used for

Ideal for developers who need to generate dynamic HTML content, integrate templates into web applications, and manage server-side or client-side rendering. Especially valuable for those working with Node.js and Express, seeking a flexible and efficient templating solution.

Common actions

generate dynamic HTML

create web templates

embed JavaScript

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Capabilities

Key features

Control flow tags
Escaped/unescaped output
Newline/whitespace trim
Custom delimiters
Template includes
Static caching
Client-side support

Target Audience

developer

Integrations

Not yet documented

Pricing & Plans

Open Source

Free

FAQs

What are the primary use cases for EJS?

EJS is primarily used for generating dynamic HTML content in web applications. It's ideal for server-side rendering with Node.js and Express, as well as for client-side templating. Its features like control flow and includes make it versatile for various web development needs.

Does EJS support both CommonJS and ES Modules?

Yes, EJS supports both CommonJS (using `require`) and ES Modules (using `import`). This ensures compatibility with modern JavaScript environments and allows developers to integrate it seamlessly into their preferred module system.

Can EJS templates be cached?

Yes, EJS provides a basic in-process cache for compiled functions and templates. It also allows for integration with external LRU caching libraries like `lru-cache` for more advanced caching strategies, improving performance in production environments.

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