正则表达式
2017-12-21 10:53
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>test2</title>
<script src="../../../../代码/3.jQuery/jQuery-2.1.0/jquery-2.1.0.js"></script>
<script>
$(function(){
$("#haha").blur(function(){
var name = $(this).val();
if(name == "" || name == null){
alert("姓名不能为空");
}else{
//定义正则规则
var reg = /[a-Z0-9]/;
//匹配首字母大写的正则表达式;
var reg2 = /^[A-Z][a-z0-9]/;
if(reg.test(name)){
}else{
alert("姓名格式不匹配");
}
}
});
});
</script>
</head>
<body>
名字:<input type="text" id="haha"/>
</body>
</html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>test2</title>
<script src="../../../../代码/3.jQuery/jQuery-2.1.0/jquery-2.1.0.js"></script>
<script>
$(function(){
$("#haha").blur(function(){
var name = $(this).val();
if(name == "" || name == null){
alert("姓名不能为空");
}else{
//定义正则规则
var reg = /[a-Z0-9]/;
//匹配首字母大写的正则表达式;
var reg2 = /^[A-Z][a-z0-9]/;
if(reg.test(name)){
}else{
alert("姓名格式不匹配");
}
}
});
});
</script>
</head>
<body>
名字:<input type="text" id="haha"/>
</body>
</html>