次のエディターは、登録ページフォーム検証の JavaScript 補完の例を示します。編集者はこれが非常に優れていると考えているので、js ソース コードを共有し、参考として提供します。 JavaScript に興味がある方は、エディターをフォローしてご覧ください
1. ステップ分析
ステップ 1: イベント (onsubmit) を決定し、それに関数をバインドします
ステップ 2: これを記述します機能 (ユーザーが入力したデータを取得する )
ステップ 3: ユーザーが入力したデータを判断する
ステップ 4: データが正当であるか (フォームを送信させます)
ステップ 5 のステップ: データが不正です (エラー メッセージが表示され、フォームが送信されなくなります)
質問: フォームの送信を制御するにはどうすればよいですか?
onsubmitイベントについて: 通常フォーム送信に使用されるため、関数定義時に戻り値を与える必要があります。
onsubmit = return checkForm()
2. 登録ページのフォーム検証を完了します
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>注册页面</title>
<script>
function checkForm(){
//alert("aa");
/**校验用户名*/
//1.获取用户输入的数据
var uValue=document.getElementById("user").value;
//alert(uValue);
if(uValue==""){
//2.给出错误提示信息
alert("用户名不能为空");
return false;
}
/**校验密码*/
var pValue=document.getElementById("password").value;
if(pValue==""){ //注意空的表示方法
alert("密码不能为空");
return false;
}
/** 校验确认密码*/
var rpValue=document.getElementById("repassword").value;
if(rpValue!=pValue){
alert("两次密码输入不一致！");
return false;
}
/**校验邮箱*/
var eValue=document.getElementById("email").value;
if(！/^([a-zA-Z0-9_-])+@([a-zA-Z0-9_-])+(.[a-zA-Z0-9_-])+/.test(eValue)){
alert("邮箱格式不正确！");
}
}
</script>
</head>
<body>
<table border="1px" align="center" width="1300px" cellpadding="0px" cellspacing="0px">
<!--1.logo部分-->
<tr>
<td>
<!--嵌套一个一行三列的表格-->
<table border="1px" width="100%">
<tr height="50px">
<td width="33.3%">
<img src="../img/logo2.png" height="47px" />
</td>
<td width="33.3%">
<img src="../img/header.png" height="47px"/>
</td>
<td width="33.3%">
<a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >登录</a>
<a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >注册</a>
<a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >购物车</a>
</td>
</tr>
</table>
</td>
</tr>
<!--2.导航栏部分-->
<tr height="50px" >
<td bgcolor="black">
<a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" ><font size="3" color="white">首页</font></a>
<a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" ><font color="white">手机数码</font></a>
<a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" ><font color="white">电脑办公</font></a>
<a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" ><font color="white">鞋靴箱包</font></a>
<a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" ><font color="white">家用电器</font></a>
</td>
</tr>
<!--3.注册表单-->
<tr>
<td height="600px" background="../img/regist_bg.jpg">
<!--嵌套一个十行二列的表格-->
<form action="#" method="get" name="regForm" onsubmit="return checkForm()">
<table border="1px" width="750px" height="400px" align="center" cellpadding="0px" cellspacing="0px" bgcolor="white">
<tr height="40px">
<td colspan="2">
<font size="4">会员注册</font> USER REGISTER
</td>
</tr>
<tr>
<td>用户名</td>
<td>
<input type="text" name="user" size="35px" id="user"/>
</td>
</tr>
<tr>
<td>密码</td>
<td>
<input type="password" name="password" size="35px" id="password"/>
</td>
</tr>
<tr>
<td>确认密码</td>
<td>
<input type="password" name="repassword" size="35px" id="repassword"/>
</td>
</tr>
<tr>
<td>E-mail</td>
<td>
<input type="text" name="e-mail" size="35px" id="email"/>
</td>
</tr>
<tr>
<td>姓名</td>
<td>
<input type="text" name="username" size="35px"/>
</td>
</tr>
<tr>
<td>性别</td>
<td>
<input type="radio" name="sex" value="男"/>男
<input type="radio" name="sex" value="女"/>女
</td>
</tr>
<tr>
<td>出生日期</td>
<td>
<input type="text" name="birthday" size="35px"/>
</td>
</tr>
<tr>
<td>验证码</td>
<td>
<input type="text" name="yzm" />
<img src="../img/yanzhengma.png" />
</td>
</tr>
<tr align="center">
<td colspan="2">
<input type="submit" value="注册" />
</td>
</tr>
</table>
</form>
</td>
</tr>
<!--4.广告图片-->
<tr>
<td>
<img src="../img/footer.jpg" width="100%"/>
</td>
</tr>
<!--5.友情链接和版权信息-->
<tr>
<td align="center">
<a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" ><font>关于我们</font></a>
<a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" ><font>联系我们</font></a>
<a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" ><font>招贤纳士</font></a>
<a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" ><font>法律声明</font></a>
<a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" ><font>友情链接</font></a>
<a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" ><font>支付方式</font></a>
<a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" ><font>配送方式</font></a>
<a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" ><font>服务声明</font></a>
<a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" ><font>广告声明</font></a>
<p>
Copyright © 2005-2016 hh商城 版权所有
</p>
</td>
</tr>
</table>
</body>
</html>検証と確認のパスワード部分に正規表現を使用します（覚えておく必要はありません、必要に応じて文書を参照してください）
正規表現.test(検査対象)は、条件を満たしていればtrue、満たしていなければfalseとなります。
登録ページでフォーム検証を完了するために JavaScript を使用する上記の例は、編集者によって共有されたすべての内容です。参考にしていただければ幸いです。また、PHP 中国語 Web サイトをサポートしていただければ幸いです。
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Ajax 非同期リクエストの例を実装するための JavaScript の詳細な説明
以上が登録ページでフォーム検証を完了する JavaScript の例の詳細内容です。詳細については、PHP 中国語 Web サイトの他の関連記事を参照してください。
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