Post on 01-Sep-2014
description
transcript
H A Z E M S A L E H
JavaScript Tools
Outline
JavaScript Debugging Tools
Google Chrome Developer Tools.
Safari Development Tools.
Firebug for Firefox.
IE Developer Tools.
JavaScript Code Verification Tools
JSLint.
JavaScript Code Minification Tools
YUI Compressor.
Dojo ShrinkSafe
JavaScript Debugging Tools
Google Chrome Developer Tools
Google Chrome Developer Tools
Safari Development Tools
Safari Development Tools
Firebug for Firefox
Firebug for Firefox
IE Developer Tools
IE Developer Tools
JavaScript Code Verification Tools
JavaScript Code Minification Tools
JavaScript Code Minification Tools
Compressing JavaScript code is one of the most important things to consider in order to have better JavaScript performance.
Some popular web sites declared that their users have empty browser caches, this is why this is important to be considered. Yahoo! Declared that around 40% to 60% of Yahoo!'s users
have an empty cache experience.
Many ready made tools can perform JavaScript code minification, however, the most popular two are for YUI and Dojo.
YUI Compressor
Download the yuicompressor-x.y.z.jar from:
https://github.com/yui/yuicompressor/downloads
Run the compressor from the CLI:
java -jar yuicompressor-2.4.7.jar file1.js -o file1-min.js --charset utf-8
file1.js refers to the JavaScript file to be compressed.
-o file1-min.js means output the compressed content to file1-min.js.
--charset utf-8 for UTF-8 handling.
Dojo ShrinkSafe
Download the dojo-release-x.y.z-shrinksafe.zip from:
http://download.dojotoolkit.org/current-stable/
Run the compressor from the CLI:
java -jar -Dfile.encoding=UTF8 shrinksafe.jar file1.js > file1-min.js
file1.js refers to the JavaScript file to be compressed.
> file1-min.js means output the compressed data to file1-min.js file.
-Dfile.encoding=UTF8 for UTF-8 handling.
Questions