需求
利用React实现一个简易的信息管理系统。
写的不太好,欢迎熟悉React的大神来找茬。真心感激!
分析
编写React就是不断构建组件的过程,首先要根据需求进行UI的划分:
-StudentBox
-StudentList
-Student
-StudentForm
编码
服务端
没有用到服务器,采用了数据模拟的方式
var id = 41060122; //添加信息时自增长ID
var data = [
{
id: 41060120,
name: 'Mary',
age: 20
},
{
id: 41060121,
name: 'Jacky',
age: 18
},
{
id: 41060122,
name: 'Helen',
age: 21
}
];
页面
React
组件
StudentBox
var StudentBox = React.createClass({
getInitialState: function () {
return {data: data};
},
//删除
handleDelete: function (index) {
this.state.data.splice(index, 1);
this.forceUpdate();
},
//更新
handleUpdate: function (student) {
this.state.data.forEach(function (item) {
if (item.id === student.id) {
_.extend(item, student);
}
});
this.forceUpdate();
},
//新增
handleSave: function (student) {
this.state.data.push(_.extend(student, {id: ++id}));
this.forceUpdate();
},
render: function () {
return (
Student Messages
)
}
});
StudentList
var StudentList = React.createClass({
render: function () {
var handleDelete = this.props.delete;
var handleUpdate = this.props.update;
return (
index
number
name
age
operation
{this.props.data.map(function (student, index) {
return
})}
)
}
});
Student
var Student = React.createClass({
getInitialState: function () {
return {isEdit: false};
},
handleEdit: function () {
this.setState({isEdit: !this.state.isEdit});
},
handleDelete: function (index) {
this.props.delete(index);
},
handleUpdate: function (id) {
var name = React.findDOMNode(this.refs.name).value.trim();
var age = React.findDOMNode(this.refs.age).value.trim();
if (!name || !age) {
return;
}
this.props.update({
id: id,
name: name,
age: age
});
this.handleEdit();
},
render: function () {
var index = this.props.index;
var student = this.props.data;
var operations = this.state.isEdit ?
:
;
var name = this.state.isEdit ?
: student.name;
var age = this.state.isEdit ?
: student.age;
return (
{index}
{student.id}
{name}
{age}
{operations}
)
}
});
StudentForm
var StudentForm = React.createClass({
handleSubmit: function (e) {
e.preventDefault();
var name = React.findDOMNode(this.refs.name).value.trim();
var age = React.findDOMNode(this.refs.age).value.trim();
if (!name || !age) {
return;
}
this.props.save({
name: name,
age: age
});
},
render: function () {
return (
)
}
});
渲染
React.render(
,
document.body
);