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Handlebars.js vs Jinja2: What are the differences?
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1. Syntax and Structure: Handlebars.js uses double curly braces
{{}}to enclose variables and expressions, while Jinja2 uses double curly braces{}. Handlebars.js also uses the#if,#each, and#unlesskeywords for control flow, whereas Jinja2 uses{% if %},{% for %}, and{% unless %}respectively. - 2. Template Inheritance: Jinja2 provides template inheritance, allowing the creation of a base template that can be extended and modified by child templates. Handlebars.js does not have built-in support for template inheritance.
- 3. Custom Helpers: Handlebars.js allows the creation of custom helpers that can be used to perform additional logic or manipulate data within templates. Jinja2 does not have built-in support for custom helpers, although it can be extended through macros and filters.
- 4. Pre-compilation: Handlebars.js can be pre-compiled into JavaScript functions, which can improve performance by reducing the need for runtime parsing and evaluation. Jinja2 is typically compiled and executed dynamically at runtime.
- 5. Language Support: Handlebars.js is primarily used with JavaScript-based web frameworks, while Jinja2 is commonly used with Python-based web frameworks such as Flask and Django. This means that Handlebars.js has better integration and compatibility with JavaScript-specific features and libraries.
- 6. Syntax Extensibility: Handlebars.js allows the extension of its syntax through custom helpers and block helpers, making it more flexible for complex template logic. Jinja2 has a more fixed syntax and does not provide the same level of extensibility.
In Summary, Handlebars.js and Jinja2 differ in their syntax and structure, support for template inheritance, custom helpers, pre-compilation, language compatibility, and syntax extensibility.
Advice on Handlebars.js and Jinja
Asad Gilani
Software Engineer at Lisec Automation · | 5 upvotes · 228.2K views
@All: I am searching for the best template engine for .NET. I started looking into several template engines, including the Dotliquid, Handlebars.js, Scriban, and Razorlight. I found handlebar a bit difficult to use when using the loops and condition because you need to register for helper first. DotLiquid and Scriban were easy to use and in Razorlight I did not find the example for loops.
Can you please suggest which template engine is best suited for the use of conditional/list and looping and why? Or if anybody could provide me a resource or link where I can compare which is best?
Thanks In Advance
Replies (1)
Josh Lind
Frontend Engineer · | 3 upvotes · 131.5K views
I like Handlebars, it's very mature... some would say-- outdated.
Handlebars loops are done via {{#each myList}}. Read the docs! https://handlebarsjs.com/guide
Remember, don't put logic in your templates! Keep this layer simple. Sorry to hear you have to use dotNet.
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Learn MorePros of Handlebars.js
Pros of Jinja
Pros of Handlebars.js
- Simple106
- Great templating language76
- Open source50
- Logicless36
- Integrates well into any codebase20
- Easy to create helper methods for complex scenarios10
- Created by Yehuda Katz7
- Easy For Fornt End Developers,learn backend2
- Awesome1
Pros of Jinja
- It is simple to use7
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What is Handlebars.js?
Handlebars.js is an extension to the Mustache templating language created by Chris Wanstrath. Handlebars.js and Mustache are both logicless templating languages that keep the view and the code separated like we all know they should be.
What is Jinja?
It is a full featured template engine for Python. It has full unicode support, an optional integrated sandboxed execution environment, widely used and BSD licensed.
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What are some alternatives to Handlebars.js and Jinja?
AngularJS
AngularJS lets you write client-side web applications as if you had a smarter browser. It lets you use good old HTML (or HAML, Jade and friends!) as your template language and lets you extend HTML’s syntax to express your application’s components clearly and succinctly. It automatically synchronizes data from your UI (view) with your JavaScript objects (model) through 2-way data binding.
Mustache
Mustache is a logic-less template syntax. It can be used for HTML, config files, source code - anything. It works by expanding tags in a template using values provided in a hash or object. We call it "logic-less" because there are no if statements, else clauses, or for loops. Instead there are only tags. Some tags are replaced with a value, some nothing, and others a series of values.
React
Lots of people use React as the V in MVC. Since React makes no assumptions about the rest of your technology stack, it's easy to try it out on a small feature in an existing project.
Underscore
A JavaScript library that provides a whole mess of useful functional programming helpers without extending any built-in objects.
doT.js
It is a fastest and concise javascript template engine for Node.js and browsers. It was created in search of the fastest and concise JavaScript templating function with emphasis on performance under V8 and Node.js. It shows great performance for both Node.js and browsers.