JavaOne presentation looking at the different tools available to JavaScript developers for debugging, performance and deployment

1. Practical Parallels: From Development on the Java™ Platform to Development With the JavaScript™ Programming Language Dave Johnson CTO and Co-founder Nitobi www.nitobi.com Session 9624

7. Clients

9. http://www.flickr.com/photos/magtravels/85630949/

15. http://www.flickr.com/photos/49503191155@N01/17975738/ Testing Development Requirements

17. http://www.flickr.com/photos/thomashawk/85441961/

32. http://www.flickr.com/photos/rbos/91474426/

36. The Good and the Bad Good Bad Easy X Misses important bugs X Find regression bugs X Fragile X Run with the build X Ignore functionality X Comparing aspects of automated testing

38. Golden Rule

42. JSUnit Server

43. Selenium Server

49. http://www.flickr.com/photos/esther17/86558129/

58. http://www.flickr.com/photos/pulpolux/192587812/

61. HTML XML JSON

62. Firefox

63. Internet Explorer

64. http://www.jamesward.org/census/ Firefox Internet Explorer

65. XSLT Cross Browser Performance

66. Big Picture

71. Simple Example var _a = function (a){ var b=0; var c=a.length; for ( var d=0;d<c;d++){b+=a[d];} return b/c;} var calcAverage =_a; /** * @private */ var _calcAverage = function(aNumber) { var nTotal = 0; var iLength = aNumber.length; for ( var iIndex = 0; i<iLength; i++) { nTotal += aNumber[iIndex]; } return nTotal/iLength; } /** * Calculates the average of an array of numbers. * @param {Array} Array of numbers to average. */ var calcAverage = _calcAverage;

75. How Small is It? Size (Kb) Original 9.3 Minify 3.9 GZip / Deflate 2.8 Minify + GZip / Deflate 1.3 Size Reduction 86% Expected Results for JavaScript Compression

77. Image Merging

81. Q&A