Syntax
- handlebars:
Handlebars employs a more structured syntax that separates HTML from JavaScript logic. It uses curly braces for expressions and supports block helpers, making it easier to read and maintain complex templates without cluttering the HTML with JavaScript.
- ejs:
EJS uses plain HTML with embedded JavaScript, making it very intuitive for developers familiar with HTML. The syntax is straightforward, allowing for easy integration of JavaScript expressions and logic directly within the HTML.
- pug:
Pug uses an indentation-based syntax that eliminates the need for closing tags, resulting in cleaner and more concise code. This can improve readability and speed up development, but may require a learning curve for those used to traditional HTML.
- nunjucks:
Nunjucks features a syntax similar to Jinja2, with a focus on flexibility and power. It supports template inheritance, macros, and asynchronous rendering, providing a robust framework for building complex templates.
- liquidjs:
LiquidJS has a unique syntax that emphasizes safety and simplicity. It uses tags, filters, and objects, allowing for a clear separation of logic from presentation, which is beneficial for security and maintainability.
Extensibility
- handlebars:
Handlebars is highly extensible, allowing developers to create custom helpers and partials. This feature enhances its functionality and makes it suitable for complex applications that require reusable components.
- ejs:
EJS is relatively simple and does not have a built-in extensibility model. However, it allows for the inclusion of JavaScript functions and partials, enabling some level of customization for specific needs.
- pug:
Pug allows for mixins and custom filters, enabling developers to create reusable components and logic. This extensibility is beneficial for maintaining clean code and reducing redundancy in templates.
- nunjucks:
Nunjucks is designed to be extensible, supporting custom filters, tags, and global variables. This makes it highly adaptable for various use cases, including complex web applications and static site generation.
- liquidjs:
LiquidJS supports custom filters and tags, allowing developers to extend its functionality easily. This flexibility makes it a good choice for applications that need specific rendering logic without compromising security.
Performance
- handlebars:
Handlebars is optimized for performance, particularly with precompiled templates. This can significantly improve rendering speed, especially in larger applications where template complexity increases.
- ejs:
EJS is lightweight and performs well for small to medium-sized applications. However, it may not be as optimized for very large applications with extensive templates, where rendering speed can be a concern.
- pug:
Pug's performance is generally good, but its indentation-based syntax can lead to longer compilation times for very large templates. It excels in scenarios where rapid development and maintainability are prioritized over raw performance.
- nunjucks:
Nunjucks performs well with its asynchronous rendering capabilities, which can enhance performance in applications that require dynamic content loading. However, its complexity may introduce some overhead compared to simpler engines.
- liquidjs:
LiquidJS is designed with performance in mind, especially for applications that require secure rendering of user-generated content. Its filtering and rendering processes are efficient, making it suitable for high-traffic applications.
Learning Curve
- handlebars:
Handlebars has a moderate learning curve due to its unique syntax and concepts like helpers and partials. However, once understood, it can greatly enhance template organization and readability.
- ejs:
EJS has a gentle learning curve, especially for developers already familiar with HTML and JavaScript. Its straightforward syntax makes it easy to pick up and start using quickly.
- pug:
Pug's indentation-based syntax can be challenging for newcomers, but its concise nature can lead to faster development once the initial learning curve is overcome. Developers may find it rewarding for projects that prioritize readability.
- nunjucks:
Nunjucks has a steeper learning curve, especially for those unfamiliar with Jinja2-style templating. Its advanced features like inheritance and asynchronous rendering can take time to master, but they offer significant power once learned.
- liquidjs:
LiquidJS may require some time to learn due to its distinct syntax and focus on security features. However, its design promotes best practices, making it worthwhile for developers focused on safety.
