jsp中执行onclick会刷新一次页面的问题-js教程-PHP中文网

jsp中执行onclick会刷新一次页面的问题

PHPz

发布： 2018-10-10 15:19:19

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今天做一个注册页面的时候，弄了一个清空的按钮，我执行清空按钮，但是按钮调用的方法什么都没写，所有文本都清空了

代码如下：

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>我要注册</title>
<script type="text/javascript">
function resetClick()
{
	
}


</script>



</head>
 <body style="text-align: center;">
        <form action="zhuche" method="post">
            <table width="40%" border="1">
                <tr>
                    <td>用户名</td>
                    <td>
                        
                        <input type="text" name="userName" id ="userName">
                    </td>
                </tr>
                <tr>
                    <td>密码</td>
                    <td>
                        <input type="password" name="userPwd" id="userPwd">
                    </td>
                </tr>
                <tr>
                    <td>确认密码</td>
                    <td>
                        <input type="password" name="confirmPwd" id="confirmPwd">
                    </td>
                </tr>
                <tr>
                    <td>
                    <!-- 执行重置  -->
                        <input type="reset" value="清空" onclick="resetClick()">
                    </td>
                    <td>
                        <input type="submit" value="注册">
                    </td>
                </tr>
            </table>
        </form>
    </body>
</html>

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查了一下资料，原因是在

执行onclick，所以每次页面都会刷新一次。

有两种方法，不用刷新页面

1、不用格式，删掉这个格式

2、改成 onclick="return resetClick()" ,其中resetClick()为onclick方法，并且在方法中 return = false；这样就不用刷新页面了

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>我要注册</title>
<script type="text/javascript">
function resetClick()
{
	document.getElementById("userName").value = "";
	document.getElementById("userPwd").value = "";
	document.getElementById("confirmPwd").value = "";
	return false;
}


</script>



</head>
 <body style="text-align: center;">
        <form action="zhuche" method="post">
            <table width="40%" border="1">
                <tr>
                    <td>用户名</td>
                    <td>
                        
                        <input type="text" name="userName" id ="userName">
                    </td>
                </tr>
                <tr>
                    <td>密码</td>
                    <td>
                        <input type="password" name="userPwd" id="userPwd">
                    </td>
                </tr>
                <tr>
                    <td>确认密码</td>
                    <td>
                        <input type="password" name="confirmPwd" id="confirmPwd">
                    </td>
                </tr>
                <tr>
                    <td>
                    <!-- 执行重置  -->
                        <input type="reset" value="清空" onclick="return resetClick()">
                    </td>
                    <td>
                        <input type="submit" value="注册">
                    </td>
                </tr>
            </table>
        </form>
    </body>
</html>

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