JavaScript中生成HTML的字符格式函数

str.anchor("anchor1")	<A NAME="anchor1">This is a string</A>	This is a string
str.big()	<BIG>This is a string</BIG>	This is a string
str.blink()	<BLINK>This is a string</BLINK >	This is a string
str.bold()	<B>This is a string</B>	This is a string
str.fixed()	<TT>This is a string</TT>	This is a string
str.fontcolor("darkred")	<FONT COLOR="darkred">This is a string</FONT>	This is a string
str.fontsize(5)	<FONT SIZE="5">This is a string</FONT>	This is a string
str.italics()	<I>This is a string</I>	This is a string
str.link("index.html")	<A HREF="index.html">This is a string</A>	This is a string
str.small()	<SMALL>This is a string</SMALL>	This is a string
str.strike()	<STRIKE>This is a string</STRIKE>	This is a string
str.sub()	<SUB>This is a string</SUB>	This is a string
str.sup()	<SUP>This is a string</SUP>	This is a string
str.toLowerCase()	this is a string	this is a string
str.toUpperCase()	THIS IS A STRING	THIS IS A STRING