如何使用jquery $ .post（）方法提交表单值 [英] How to use jquery $.post() method to submit form values

问题描述

我有一个带有表单的主页面和另一个处理表单值的页面
这里是2页的源代码

I have 1 main page with a form and another page to process the form value here are source codes of the 2 pages

表单Page：

<meta charset="UTF-8">
<title>Form Page</title>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<form action="process.php" method="post" id="reg-form">
        Username: <input type="text" id="username" name="username">
        <br>
        Password: <input type="password" id="password" name="password">
        <br>
        <button type="submit" id="submit-btn">Traditional Submit</button>
        <button type="button" id="post-btn">$.Post Submit</button>
</form>
<script>
    $("#post-btn").click(function(){        
        $.post("process.php",function(data){
            alert(data);
        });
    });
</script>

流程页面：

<?php
$username=$_POST["username"];
$password=$_POST["password"];
echo "Username: ".$username;
echo "<br>";
echo "Password: ".$password;?>

如果我点击传统提交按钮，它的效果非常好。

if I click the "Traditional Submit" buttton, it works perfectly well.

但是当我点击$ .Post Submit按钮时，我只是不断收到错误消息通知：未定义索引......

but when I click the "$.Post Submit" button, I just keep getting error msg "Notice: Undefined Index ..."

我无法弄清问题在哪里，请提前帮助检查和修复，提前谢谢！

I can not figure out where the problem is, please kindly help check and fix, thanks in advance!

推荐答案

你有选择并发送表单数据：

You have to select and send the form data as well:

$("#post-btn").click(function(){        
    $.post("process.php", $("#reg-form").serialize(), function(data) {
        alert(data);
    });
});

查看jQuery的文档 serialize 方法，它将表单字段中的数据编码为要发送到服务器的数据字符串。

Take a look at the documentation for the jQuery serialize method, which encodes the data from the form fields into a data-string to be sent to the server.

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