采用正则表达式的方法，判断字符中是否包含有特殊字符：
function containSpecial( s ) { var containSpecial = RegExp(/[(\ )(\~)(\!)(\@)(\#) (\$)(\%)(\^)(\&)(\*)(\()(\))(\-)(\_)(\+)(\=) (\[)(\])(\{)(\})(\|)(\\)(\;)(\:)(\')(\")(\,)(\.)(\/) (\<)(\>)(\?)(\)]+/); return ( containSpecial.test(s) ); }
当返回的结构为true时，说明包含特殊字符。
