3.string对象
例 3.1
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML>
<head>
<meta http-equiv="content-type" content="text/html; charset=utf-8"/>
</HEAD>
<BODY>
<Script>
var hello = "HELLO mark!"
with(document) {
write(hello,"<BR>")
write("马克-to-win第1个字符为："+hello.charAt(0)+"<BR>")
write("L在第"+hello.indexOf("L")+"个字符"+"<BR>")
write("L在第"+hello.lastIndexOf("L")+ "个字符"+"<BR>")
write("k在第"+hello.indexOf("k")+"个字符"+"<BR>")
/*String.fontsize() (Method)
Encapsulates the string within an <FONT SIZE="..."> tag context.*/
write(hello.fontsize("5")+"<BR>")
/*和Array的slice 一样， fomer包括，latter不包括*/
write("截取第2至第4个字符:"+hello.substring(1,4)+"<BR>")
/* myString.substr(aStartPosition, aLength)
Argument list: aStartPosition The index of the first character in the substring
aLength The length of the substring
*/
write("截取从第2个字符开始的3个字符:"+hello.substr(1,4)+"<BR>")
write("转换为大写："+hello.toUpperCase()+"<BR>")
write("转换为小写："+hello.toLowerCase()+"<BR>")
}
</Script>
</BODY>
</HTML>
详见：http://www.mark-to-win.com/index.html?content=Javascript/jsUrl.html&chapter=Javascript/js2_web.html#String
javascript当中string对象用法
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转载自blog.csdn.net/mark_to_win/article/details/88621213
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