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;

}

return true;

}

就这么简单:)其实还输入日语,晕