实现函数:  
function isCharsInBag (s, bag)  
{   
var i,c;  
for (i = 0; i < s.length; i++)  
{  
  
c = s.charAt(i);//字符串s中的字符  
if (bag.indexOf(c)  -1)   
return c;  
}  
return \"\";  
}  
检查函数:  
function ischinese(s)  
{  
var errorChar;  
var badChar = \"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789<,[]{}?/+=|\\\\\''\\\":;~!#$%()`\";  
errorChar = isCharsInBag( s, badChar)  
if (errorChar != \"\" )  
{  
report=report+\"请重新输入中文\\n\";  
return false;  
}  ...[ 查看全文 ]