When comparing JsRender vs Underscore Templates, the Slant community recommends Underscore Templates for most people. In the question“What are the best JavaScript templating engines?” Underscore Templates is ranked 7th while JsRender is ranked 24th. The most important reason people chose Underscore Templates is:
Due to Underscore's optimized performance and ease-of-use it can be deemed as most fit for use in small sections of your code, where you just want a quick and simple template to render your content.
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Pros
Pro Clean syntax
JsRender's syntax is clean and intuitive. It's very similar to Handlebars with a lot of curly braces ({}).
Pro For micro templating
Due to Underscore's optimized performance and ease-of-use it can be deemed as most fit for use in small sections of your code, where you just want a quick and simple template to render your content.
Pro Pre-compilation
Underscore allows you to compile your template once before data is inserted to it.
Cons
Con Lack of Documentation
The docs aren't updated and don't contain all the available functions that one could use.
Con Not a true templating engine
template
in underscore is simply a function which compiles a piece of template into HTML. It's useful for rendering HTML from JSON and it's not very useful when building complex frontend templates.