我正在尝试将自定义文本添加到我的“任务”中，当我单击“任务列表”中的添加文本按钮时，它仅显示在地址栏中。目标是单击添加任务后在“任务列表”下创建一个列表项。第一个代码块是我的 app.js 文件，下面的代码块是我的 index.html 文件。
//Load all event listeners
loadEventListeners();
// Load all event listeners
function loadEventListeners() {
// Add task event
form.addEventListener('submit', addTask);
}
// Add task
function addTask(e) {
if(taskInput.value === '') {
alert('Add a task');
}
// Create li element
const li = document.createElement('li');
// Add class
li.className = 'collection-item';
// Create text node and append to li
li.appendChild(document.createTextNode(taskInput.value));
// Create new link element
const link = document.createElement('a');
// Add class
link.className = 'delete-item secondary-content';
// Add icon html
link.innerHTML = '<i class="fa fa-remove"></i>';
// Append the link to li
li.appendChild(link);
// Append li to ul
taskList.appendChild(li);
// Clear Input
taskInput.value = '';
e.preventDefault();
}
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/materialize/1.0.0/css/materialize.min.css">
<link href="https://stackpath.bootstrapcdn.com/font-awesome/4.7.0/css/font-awesome.min.css" rel="stylesheet" integrity="sha384-wvfXpqpZZVQGK6TAh5PVlGOfQNHSoD2xbE+QkPxCAFlNEevoEH3Sl0sibVcOQVnN" crossorigin="anonymous">
<title>Task List</title>
</head>
<body>
<div class="container">
<div class="row">
<div class="col s12">
<div id="main" class="card">
<div class="card-content">
<span class="card-title">Task List</span>
<div class="row">
<form id="task-form">
<div class="input-field col s12">
<input type="text" name="task" id="task">
<label for="task">New Task</label>
</div>
<input type="submit" value="Add Task" class="btn">
</form>
</div>
</div>
<div class="card-action">
<h5 id="task-title">Tasks</h5>
<div class="input-field col s12">
<input type="text" name="filter" id="filter">
<label for="filter">Filter Tasks</label>
</div>
<ul class="collection"></ul>
<a href="#" class="clear-tasks btn black">Clear Tasks</a>
</div>
</div>
</div>
</div>
</div>
<script
src="https://code.jquery.com/jquery-3.4.1.js"
integrity="sha256-WpOohJOqMqqyKL9FccASB9O0KwACQJpFTUBLTYOVvVU="
crossorigin="anonymous"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/materialize/1.0.0/js/materialize.min.js"></script>
<script type="app.js"></script>
</body>
</html>
最佳答案
只需进行一些修改:
const btn = document.querySelector('.btn');
const taskInput = document.getElementById('task');
const taskList = document.querySelector('.container ul');
btn.addEventListener('click', addTask);
// Add task
function addTask(e) {
if(taskInput.value === '') {
alert('Add a task');
}
// Create li element
const li = document.createElement('LI');
// Add class
li.classList.add('collection-item');
// Create text node and append to li
li.appendChild(document.createTextNode(taskInput.value));
// Create new link element
const link = document.createElement('a');
// Add class
link.classList.add('delete-item' , 'secondary-content');
// Add icon html
link.innerHTML = '<i class="fa fa-remove"></i>';
// Append the link to li
li.appendChild(link);
// Append li to ul
taskList.appendChild(li);
e.preventDefault();
}
document.querySelector('.clear-tasks').addEventListener('click',()=> {
// Clear Input
taskInput.value = '';
});
关于javascript - 单击 "add task"后如何让我的文本显示在任务下？，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/58459734/