<!DOCTYPE html>
<html>
<head>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
</head>
<body>
<div class="container">
<form >
<label for="fname">First Name</label>
<input type="text" id="fname" name="firstname" placeholder="Your name..">
<label for="lname">Last Name</label>
<input type="text" id="lname" name="lastname" placeholder="Your last name..">
<label for="country">Country</label>
<select id="country" name="country">
<option value="australia">Australia</option>
<option value="canada">Canada</option>
<option value="usa">USA</option>
</select>
<label for="subject">Subject</label>
<textarea id="subject" name="subject" placeholder="Write something.." style="height:200px"></textarea>
<input type="submit" value="Submit" onclick="doFunction();">
</form>
</div>
<table style="width:100%" id = "myTable">
<tr>
<th>Firstname</th>
<th>Lastname</th>
<th>country</th>
</tr>
<style>
input[type=text], select, textarea {
width: 100%; /* Full width */
padding: 12px; /* Some padding */
border: 1px solid #ccc; /* Gray border */
border-radius: 4px; /* Rounded borders */
box-sizing: border-box; /* Make sure that padding and width stays in place */
margin-top: 6px; /* Add a top margin */
margin-bottom: 16px; /* Bottom margin */
resize: vertical /* Allow the user to vertically resize the textarea (not horizontally) */
}
/* Style the submit button with a specific background color etc */
input[type=submit] {
background-color: #4CAF50;
color: white;
padding: 12px 20px;
border: none;
border-radius: 4px;
cursor: pointer;
}
/* When moving the mouse over the submit button, add a darker green color */
input[type=submit]:hover {
background-color: #45a049;
}
/* Add a background color and some padding around the form */
.container {
border-radius: 5px;
background-color: #f2f2f2;
padding: 20px;
}
</style>
<script>
function doFunction(){
var value = document.getElementById("fname").select();
var lastname = document.getElementById("lname").select();
var country = document.getElementById("Country").select();
var table = document.getElementById("myTable");
var row = table.insertRow(0);
var cell1 = row.insertCell(0);
var cell2 = row.insertCell(1);
var cell3 = row.insertCell(2);
cell1.innerHTML = "value";
cell2.innerHTML = "lastname";
cell3. innerHTML = "country";
}
</script>
</body>
当用户将数据输入文本框并单击提交按钮时，我们有空文本框，数据应添加到我们在您的 html 页面中创建的表格中
我在 java 脚本中使用 select by id tags 和 insert row 方法在 javascript 中动态地将元素添加到表中
我试过了，但没有得到想要的输出
提前致谢
最佳答案
您的代码存在这些问题。
- 您忘记关闭
table标签 - 您需要使用
.value而不是.select()来获取输入字段的值 - 您需要将获取的存储在变量中的值传递给单元格的
innerHTML，而不是硬编码字符串 - 如果您不想重新加载页面，您需要将
event.preventDefault()添加到提交事件监听器 getElementById('Country')应该是getElementById('country')
我已将 thead 和 tbody 添加到您的 html 中，以便您可以直接插入表体而不是表，并将该表更改为
var table = document.querySelector("#myTable tbody");
function doFunction(){
var value = document.getElementById("fname").value;
var lastname = document.getElementById("lname").value;
var country = document.getElementById("country").value;
var table = document.querySelector("#myTable tbody");
var row = table.insertRow(0);
var cell1 = row.insertCell(0);
var cell2 = row.insertCell(1);
var cell3 = row.insertCell(2);
cell1.innerHTML = value;
cell2.innerHTML = lastname;
cell3.innerHTML = country;
}
const submit = document.querySelector('#submitBtn');
submit.addEventListener('click', event => {
event.preventDefault();
doFunction();
});input[type=text], select, textarea {
width: 100%; /* Full width */
padding: 12px; /* Some padding */
border: 1px solid #ccc; /* Gray border */
border-radius: 4px; /* Rounded borders */
box-sizing: border-box; /* Make sure that padding and width stays in place */
margin-top: 6px; /* Add a top margin */
margin-bottom: 16px; /* Bottom margin */
resize: vertical /* Allow the user to vertically resize the textarea (not horizontally) */
}
/* Style the submit button with a specific background color etc */
input[type=submit] {
background-color: #4CAF50;
color: white;
padding: 12px 20px;
border: none;
border-radius: 4px;
cursor: pointer;
}
/* When moving the mouse over the submit button, add a darker green color */
input[type=submit]:hover {
background-color: #45a049;
}
/* Add a background color and some padding around the form */
.container {
border-radius: 5px;
background-color: #f2f2f2;
padding: 20px;
} <div class="container">
<form >
<label for="fname">First Name</label>
<input type="text" id="fname" name="firstname" placeholder="Your name..">
<label for="lname">Last Name</label>
<input type="text" id="lname" name="lastname" placeholder="Your last name..">
<label for="country">Country</label>
<select id="country" name="country">
<option value="australia">Australia</option>
<option value="canada">Canada</option>
<option value="usa">USA</option>
</select>
<label for="subject">Subject</label>
<textarea id="subject" name="subject" placeholder="Write something.." style="height:200px"></textarea>
<input type="submit" value="Submit" id="submitBtn">
</form>
</div>
<table style="width:100%" id = "myTable">
<thead>
<tr>
<th>Firstname</th>
<th>Lastname</th>
<th>country</th>
</tr>
</thead>
<tbody>
</tbody>
</table>关于javascript - 在javascript中动态地将用户输入字段中的数据添加到表中，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/50581561/