js 全角与半角互转
///全角空格为12288,半角空格为32
///其他字符半角(33-126)与全角(65281-65374)的对应关系是:均相差65248
//半角转换为全角函数
function ToDBC(txtstring) {
var tmp = "";
for (var i = 0; i < txtstring.length; i++) {
if (txtstring.charCodeAt(i) == 32) {
tmp = tmp + String.fromCharCode(12288);
}
if (txtstring.charCodeAt(i) < 127) {
tmp = tmp + String.fromCharCode(txtstring.charCodeAt(i) + 65248);
}
}
return tmp;
}
//全角转换为半角函数
function ToCDB(str) {
var tmp = "";
for (var i = 0; i < str.length; i++) {
if (str.charCodeAt(i) > 65248 && str.charCodeAt(i) < 65375) {
tmp += String.fromCharCode(str.charCodeAt(i) - 65248);
}
else {
tmp += String.fromCharCode(str.charCodeAt(i));
}
}
return tmp
}