When comparing Live.js vs LiveReload, the Slant community recommends LiveReload for most people. In the question“What are the best cross-browser live-update / synchronization tools?” LiveReload is ranked 3rd while Live.js is ranked 6th. The most important reason people chose LiveReload is:
LiveReload supports LESS, SASS, Compass, Stylus, CoffeeScript, IcedCoffeeScript, Eco, SLIM, HAML and Jade out of the box. It instantly compiles them and puts the compiled files in the specified folder.
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Pros
Pro CSS injection
Once the monitored .css file is saved, changes are implemented without reloading the whole page.
Pro Multiple browser support
Live.js has multiple browser support, it supports Chrome, Firefox, Opera, Safari and IE6+. Basically almost all the browsers that are currently in use.
Pro Easy setup
Setting up Live.js is extremely easy, the developer either adds the live.js script inside their page, or if they want to monitor only CSS changes, they can add the bookmark that is found on the Live.js homepage.
Pro Great bundled compilers
LiveReload supports LESS, SASS, Compass, Stylus, CoffeeScript, IcedCoffeeScript, Eco, SLIM, HAML and Jade out of the box. It instantly compiles them and puts the compiled files in the specified folder.
Pro Works with most modern browsers
LiveReload supports Safari, Chrome, Firefox, Mobile Safari and Opera with web sockets enabled.
Pro CSS injection
Once the monitored .css file is saved, changes are implemented without a refresh.
Cons
Con No cross-device support live or otherwise
Does not have support for multiple devices or multiple browsers for live reloading.
Con To use it, a code snippet or an extension to the browser needs to be added
To use LiveReload, a code snippet needs to be added inside the view, or an extension to be installed to the browser(s) of choice. While it's not too much work, it can be a hassle and a deal-breaker for some people.