目录一、初步认识环境变量1.1常见的环境变量1.2环境变量的基本概念二、命令行参数2.1通过命令编程客栈行参数获取环境变量三、进程地址空间3.1进程（虚拟）地址空间的引入3.2进程地址空间的布局和理解3.3什么是地址空
I came across a scenario where giving a script element an id attribute would solve a problem easily. However, after reading about the script element at w3schools and quirksmode, it seems doing so coul
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