kentzheng

This is the HTML 4.01 Transitional DTD, which includes presentation attributes and elements that W3C expects to phase out as support for style sheets

This is SVG, a language for describing two-dimensional graphics in XML. The Scalable Vector Graphics (SVG) Copyright 2001, 2002, 2011 World Wide Web C

正则表达式30分钟入门教程，30分钟内让你明白正则表达式是什么，并对它有一些基本的了解，让你可以在自己的程序或网页里使用它。