<!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" />
<title>To-Do</title>
<style>
.to-do-page {
position: absolute;
top: 0;
right: 0;
left: 0;
bottom: 0;
margin: auto;
width: 400px;
height: 400px;
}
header {
font-size: 30px;
font-weight: 200;
font-family: fantasy;
text-align: center;
margin-bottom: 10px;
}
main {
border: 1px solid #dedede;
border-radius: 10px;
min-height: 200px;
}
footer {
text-align: center;
margin-top: 10px;
}
.add-form {
height: 40px;
background: #fff;
border: 4px solid rgb(74, 179, 74);
}
.add-ipt {
height: 36px;
width: 300px;
border: none;
outline: medium;
padding-left: 20px;
}
.add-btn {
height: 40px;
width: 70px;
background: rgb(74, 179, 74);
color: white;
border: none;
font-weight: bold;
outline: medium;
}
.list-item {
margin: 10px;
font-size: 16px;
font-weight: bold;
}
.list-item input {
height: 25px;
font-weight: bold;
opacity: 0.6;
padding-left: 10px;
}
.list-item:hover {
cursor: pointer;
}
.operate-area span {
display: inline-block;
color: #7676d9;
margin-left: 10px;
}
.operate-area span:hover {
cursor: pointer;
}
</style>
</head>
<body>
<div id="app"></div>
<script src="https://cdn.staticfile.org/react/16.4.0/umd/react.development.js"></script>
<script src="https://cdn.staticfile.org/react-dom/16.4.0/umd/react-dom.development.js"></script>
<script src="https://cdn.staticfile.org/babel-standalone/6.26.0/babel.min.js"></script>
<script type="text/babel">
// 总页面
class ToDoPage extends React.Component {
render() {
return (
<div className='to-do-page'>
<Header />
<Main />
<Footer />
</div>
);
}
}
// 页头
class Header extends React.Component {
render() {
return <header>To-Do</header>;
}
}
// 内容
class Main extends React.Component {
render() {
return (
<main>
<ToDoBox />
</main>
);
}
}
// 页脚
class Footer extends React.Component {
render() {
return <footer> ©2019 仅做示例使用</footer>;
}
}
class ToDoBox extends React.Component {
constructor(props) {
super(props);
this.state = {
toDoList: [
{
id: 0,
content: '学习'
},
{
id: 1,
content: '晚餐'
}
]
};
this.update = this.update.bind(this);
}
// 更新toDoList对象
update(data) {
this.setState({
toDoList: data
});
}
render() {
return (
<div>
<AddAffairForm toDoList={this.state.toDoList} update={this.update} />
<ToDoList toDoList={this.state.toDoList} update={this.update} />
</div>
);
}
}
// 添加表单
class AddAffairForm extends React.Component {
constructor(props) {
super(props);
this.state = {
affair: ''
};
this.toDoList = this.props.toDoList;
this.handleChange = this.handleChange.bind(this);
this.addToDoList = this.addToDoList.bind(this);
}
handleChange(e) {
this.setState({
affair: e.target.value
});
}
addToDoList(e) {
e.preventDefault();
if (this.state.affair.trim().length < 1) {
alert('不能不输入哦!');
} else {
this.toDoList = [...this.toDoList, { id: this.toDoList.length, content: this.state.affair }];
this.props.update && this.props.update(this.toDoList);
this.setState({
affair: ''
});
}
}
render() {
let addAffairForm = (
<form onSubmit={this.addToDoList} className='add-form'>
<input
className='add-ipt'
type='text'
placeholder='今天做点什么呢?'
value={this.state.affair}
onChange={this.handleChange}
required
/>
<input type='submit' value='加入计划' onSubmit={this.addToDoList} className='add-btn' />
</form>
);
return addAffairForm;
}
}
// 列表
class ToDoList extends React.Component {
constructor(props) {
super(props);
this.delete = this.delete.bind(this);
this.update = this.update.bind(this);
}
delete(id) {
let toDoList = [...this.props.toDoList];
toDoList = toDoList.filter(item => item.id !== id);
this.props.update && this.props.update(toDoList);
}
update(data) {
let toDoList = [...this.props.toDoList];
toDoList.map(item => {
if (item.id === data.id) {
item.content = data.content;
}
});
this.props.update && this.props.update(toDoList);
}
render() {
return (
<ul className='list'>
{this.props.toDoList.map((item, index) => {
return <ToDoListItem toDoListItem={item} key={item.id} delete={this.delete} update={this.update} />;
})}
</ul>
);
}
}
// 列表项
class ToDoListItem extends React.Component {
constructor(props) {
super(props);
this.state = {
item: Object.assign({}, this.props.toDoListItem),
isDisplay: false,
isEdit: false
};
this.toggleDisplay = this.toggleDisplay.bind(this);
this.handleChange = this.handleChange.bind(this);
this.cancelEdit = this.cancelEdit.bind(this);
this.handleEdit = this.handleEdit.bind(this);
this.finishAffair = this.finishAffair.bind(this);
this.confirmEdit = this.confirmEdit.bind(this);
}
toggleDisplay(e) {
this.setState({
isDisplay: !this.state.isDisplay
});
}
handleChange(e) {
const item = this.state.item;
item.content = e.target.value;
this.setState({
item: item
});
}
cancelEdit() {
const item = Object.assign({}, this.props.toDoListItem);
this.setState({
item: item,
isEdit: !this.state.isEdit
});
}
handleEdit() {
this.setState({
isEdit: !this.state.isEdit
});
}
finishAffair(e) {
e.stopPropagation();
this.props.delete && this.props.delete(this.state.item.id);
}
confirmEdit(e) {
this.props.update && this.props.update(this.state.item);
this.handleEdit();
}
render() {
let todoListItem = null;
if (this.state.isEdit) {
todoListItem = (
<li className='list-item'>
<input value={this.state.item.content} placeholder='请输入' onChange={this.handleChange} />
<span className='operate-area'>
<span onClick={this.confirmEdit}>确定</span>
<span onClick={this.cancelEdit}>取消</span>
</span>
</li>
);
} else {
todoListItem = (
<li className='list-item' onClick={this.toggleDisplay}>
{this.props.toDoListItem.content}
<span
style={this.state.isDisplay ? { display: 'inline-block' } : { display: 'none' }}
className='operate-area'
>
<span onClick={this.handleEdit}>修改</span>
<span onClick={this.finishAffair}>完成</span>
</span>
</li>
);
}
return todoListItem;
}
}
const app = document.getElementById('app');
ReactDOM.render(<ToDoPage />, app);
</script>
</body>
</html>
