3-9 请老师检查
来源：3-9 编程练习
慕妹6205103
2020-07-13 16:32:25
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Document</title>
<style type="text/css">
form{
width:300px;
background:pink;
text-align: center;
padding:30px 0;
margin:100px auto;
}
</style>
</head>
<body>
<form id="form">
<p><input type="text" name="name" id="username" placeholder="请输入账户名"></p>
<span></span>
<p><input type="text" name="chinaName" id="chinaName" placeholder="请输入中文名"></p>
<span></span>
<p><input type="email" name="eamil" id="email" placeholder="请输入邮箱"></p>
<span></span>
<p><input type="submit" value="注册" id="submit"></p>
</form>
<script type="text/javascript">
var spans=document.getElementsByTagName("span");
var username=document.getElementById("username");
var chinaName=document.getElementById("chinaName");
var email=document.getElementById("email");
var submit=document.getElementById("submit");
var input1=false;
var input2=false;
var input3=false;
//用户名
username.onfocus = function(){
spans[0].innerHTML = "请输入6-18位字母、数字或下划线"
}
username.onblur = function () {
var reg = /^\w{6,18}$/;
if (this.value == '') {
spans[0].innerHTML = "请输入6-18位字母、数字或下划线";
}else {
if (!reg.exec(username.value)) {
spans[0].innerHTML = "格式不正确";
} else {
spans[0].innerHTML = "";
input1 = true;
}
}
}
//中文名
chinaName.onfocus = function(){
spans[1].innerHTML = "请输入中文名";
}
chinaName.onblur = function () {
var reg = /^[\u4e00-\u9fa5]{2,5}$/;
if (this.value == '') {
spans[1].innerHTML = "请输入中文名";
}else {
if (!reg.exec(chinaName.value)) {
spans[1].innerHTML = "格式不正确";
} else {
spans[1].innerHTML = "";
input2 = true;
}
}
}
//邮箱
email.onfocus = function(){
spans[2].innerHTML = "请输入邮箱";
}
email.onblur = function () {
var reg = /^\w+@\w+\.[a-zA-Z_]{2,4}$/;
if (this.value == '') {
spans[2].innerHTML = "请输入邮箱";
}else {
if (!reg.exec(email.value)) {
spans[2].innerHTML = "格式不正确";
} else {
spans[2].innerHTML = "";
input3 = true;
}
}
}
submit.onclick = function () {
if (input1 == false || input2 == false || input3 == false) {
alert('验证失败');
}else{
alert('验证成功');
}
}
</script>
</body>
</html>
1回答
-
好帮手慕言
2020-07-13
同学你好，测试同学提供的代码，第一次输入正确的内容，再修改为错误的，点击注册，会提示注册成功，如下：
原因是在验证时匹配正确了之后，就把标识符修改为了true，在验证时匹配错误之后没有修改为false，以第一个为例，修改如下
如果我的回答帮到了你，欢迎采纳，祝学习愉快~
0
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