paul.irish

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3 years ago

perf&compression

perf&compression

jQuery Anti-Patterns for Performance & Compression Paul Irish NC JavaScript Camp ’10

Page 2 and 3: Me. • • Interaction Designer at
Page 4 and 5: wassup shawty? how u doin’ Tasksp
Page 6 and 7: Keep things DRY If you’re repeati
Page 8 and 9: All clean! Thx • var elems = [$ve
Page 10 and 11: Architecture - Object Literal var P
Page 12 and 13: Anti-Pattern: The requery // create
Page 14 and 15: • This is not the .context proper
Page 16 and 17: $(‘#whats .the’,context) • Yo
Page 18 and 19: Come on, my selector • Selector e
Page 20 and 21: Selector engines, parse direction d
Page 22 and 23: Selector Optimization • Of course
Page 24 and 25: Selector Optimization • • Avoid
Page 26 and 27: Event Delegation function delegate(
Page 28 and 29: Event Delegation new in 1.4.2! •
Page 30 and 31: Minimize DOM touches • Use classe
Page 32 and 33: Don’t treat jQuery as a Black Box
Page 34 and 35: Don’t act on absent elements •
Page 36 and 37: Don’t act on absent elements $.fn
Page 38 and 39: new New Element Creation in 1.4! jQ
Page 40 and 41: Data() // regular: $(elem).data(key
Page 42 and 43: Compression • YUI Compressor •
Page 44 and 45: Munge the primitives • Define sho
Page 46 and 47: var str=‘Let\’s put this into a
Page 48 and 49: Logic and Ternary operands // basic
Page 50 and 51: Comments /*! * Will not be removed
Page 52 and 53:
Thanks, ya’ll. • Slides at http
Page 54:
` • // pngfix for IE6 // e.g. FL.

graphics.im.ntu.edu.tw

cs.uvm.edu

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Text compression

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