目录查找位置文件类型实现基础函数类型判断函数测试代码总结本文介绍基于魔数判断文件类型,涉及文件查找读取内容、文件魔数、字节比较,最后还介绍函数参数的知识。
In the below code, I get the two dialog boxes, but the bgColor of the page is never changed. Is there any standard that font / color changes are not honored in JavaScript ?