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 ";
return false;
}

return true;
}
就这么简单:)其实还输入日语,晕