资源大小: 4.35MB
发布时间: 2011-11-12
文件格式: pdf
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When JavaScript was first introduced as part of Netscape Navigator in 1996, perform-ance wasn’t that important. The Internet was in its infancy and it was, in all ways, slow.From dial-up connections to underpowered home computers, surfing the Web wasmore often a lesson in patience than anything else. Users expected to wait for web pagesto load, and when the page successfully loaded, it was a cause for celebration.


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