有很多關於數組反應狀態更新的帖子,但是他們都沒有解決我的問題。反應this.setState沒有更新數組狀態變量
我使用FullCalendar.io組件,它接受來自父組件的事件數組作爲prop,並填充日曆單元格。我嘗試基於nextProps.cal_events設置狀態'cal_events_state',但由於某種原因,cal_event_state被設置爲[](顯然,初始狀態值被覆蓋)。
我錯過了什麼?
import React from 'react';
import ReactDOM from 'react-dom';
var $ = require ('jquery')
var Calendar = React.createClass ({
render: function() {
return <div id="calendar"></div>;
},
getInitialState: function() {
return {
cal_events_state: [{"due": "201505", "title": "Production"}]
, test_state: 11
}
},
componentDidMount: function() {
var self = this;
const var_cal_events = this.props.cal_events; //This prop is blank at this point because ajax hasn't returned an array yet.
$('#calendar').fullCalendar({
header: {
left: 'prev,next today',
center: 'title',
right: 'month,agendaWeek,agendaDay'
},
editable: true,
events: var_cal_events;
})
},
componentWillReceiveProps: function(nextProps) {
var self = this;
var var_cal_events = nextProps.cal_events; // after receiving the ajax fetch payload, this has some event tasks.
this.setState({
cal_events_state: var_cal_events, // This doesn't update state with the newly received payload
test_state: 22 // This updates state
})
$('#calendar').fullCalendar({
events: var_cal_events
})
$('#calendar').fullCalendar('refetchEvents');
},
});
爲什麼要創建兩次日曆?爲什麼要使用es5和es6混合?最重要的是,你可能不應該在這裏使用jquery,還有其他的方式來創建一個日曆,這樣你就不會在反應之外進行大量的dom操作(這是首選的做法) –
你是否有更好的鏈接反應日曆的例子? –
我的意思是做一個簡單的谷歌搜索..找到這樣的結果。 [鏈接1](https://github.com/Hacker0x01/react-datepicker).... [鏈接2](https://github.com/zippyui/react-date-picker).... [一堆不同例子](https://react.rocks/tag/DatePicker)... –