<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>title</title>
</head>
<body>
请输入您的名字:<input type="text" value="" id="userName" />*<br/>
<script>
//是中文名字,则绿色,否则红色
document.getElementById("userName").onblur=function () {
var reg=/^[\u4e00-\u9fa5]{2,6}$/;
if(reg.test(this.value)){
this.style.backgroundColor="green";
}else{
this.style.backgroundColor="pink";
}
};
//[\u4e00-\u9fa5] [一-龥]
</script>
</body>
</html>