username1: "(^[a-zA-Z]{1}([a-zA-Z0-9_]){4,14}|(^[\u4E00-\uFA29]{1}+[a-zA-Z0-9\u4E00-\uFA29]{2,7}))$",
<script>
<!--
function checkStr(str){
// [\u4E00-\uFA29]|[\uE7C7-\uE7F3]汉字编码范围
var re1 = new RegExp("^([\u4E00-\uFA29]|[\uE7C7-\uE7F3]|[a-zA-Z0-9])*$");
if (!re1.test(str)){
alert("否");
return false;
}
alert("是");
return true;
}
//-->
</script>
