* Identify problem code and use faster alternatives to accomplish the same task
* Improve scripts by learning how JavaScript stores and accesses data
* Implement JavaScript code so that it doesn't slow down interaction with the DOM
* Use optimization techniques to improve runtime performance
* Learn ways to ensure the UI is responsive at all times
* Achieve faster client-server communication
* Use a build system to minify files, and HTTP compression to deliver them to the browser

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http://www.mediafire.com/?dattwqtuknc