JS_将汉字转换成汉语拼音JS版

用人在知道里面提问，如何用javascript程序把汉字转换为拼音的首字母，帖子地址是：http://zhidao.baidu.com/question/41377061.html

　　我分析一下以后，写了下面的把汉字转换为拼音的程序，但是帖子只要拼音的首字母，所以那里只贴了一个更简单化的版本。

　　程序原理很简单，网上可以找到汉字拼音的数据字典，但是由于大家都知道GB2312编码里面汉字是按拼音排序的，只要知道各个拼音为首的汉字代码，就可以计算所有汉字的拼音代码了。

　　程序有一个关键，就是Javascript对汉字是自动使用unicode编码，为了获取起GB2312的ASCII编码值，我使用了VBSCRIPT来写了两个函数，在JAVASCRIPT程序里面调用VBSCRIPT的函数实现代码转换。

　　完整程序如下（把以下代码保存为一个html文件用IE打开，在汉字栏里面输入内容，光标离开的时候拼音栏就会显示相应的拼音）：

<mce:script  language="vbscript"><!--
function vbChr(c) 
vbChr = chr(c) 
end function

function vbAsc(n) 
vbAsc = asc(n) 
end function 
// --></mce:script>

<mce:script language=javascript><!--
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'zuo','');
function getPinYin(index){
var i;
if(index==0x1534) return 'yan';
if(index>0x4F5F||index<0x2807) return '';
i=0;while(py1[i]>=index)i++;
return py2[i-1];
}
function pinyin(s){
var i,s2='';
for (i=0;i<s.length;i++)s2+=getPinYin(0-vbAsc(s.charAt(i)));
return s2;
}
// --></mce:script>

<form name=frm>
汉字：<input type=text name=s SIZE=120 onchange="javascript:document.frm.p.value=pinyin(this.value);"><BR>
拼音：<input type=text name=p SIZE=120 readonly>
</form>