how can encapsulated components be used by calling methods, such as ant"s Message.info (option)?
how can encapsulated components be used by calling methods, such as ant"s Message.info (option)?
something like this
// Message.jsx
class Message extend React.Component {}
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1. Write the landing page with react, after calling the background data with axios, judge the route of the page to jump according to the return value, how to jump? 2.axios.get ( login login.action?username= +name+ &password= +pd, {) timeout: 1000...
setting in state: this.state = {checkList: []}; checkList initializes it with an array of the same length as JsonPage: this.setState ({checkList:checkSaveCount}); checkSavaCount is the same length as the following JsonPage. the following creates...
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this method is included in the constructor of most components, so what exactly is this method for constructor(props,context){ super(props,context) } ...
use the Table component of Antd Design, first check out the data, and then select a CheckBox, but when you change pages, that CheckBox will not disappear. For example, when I select the first line on the first page, and then skip to the second page, the ...
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official example of full copy: this is the official sample code: import { Select } from antd ; const Option = Select.Option; function handleChange(value) { console.log(`selected ${value}`); } ReactDOM.render( <div> <Select defaul...
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use list as the option data source for Select, but use callback, which cannot be rendered. Just call it directly, as shown in the figure below. The first method is fine, and the second is not. Because there are many Select, on a page, you need to use th...
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import React from react ; import ReactDOM from react-dom ; import . assets styles index.less ; import Green from . assets images green.png ; import Red from . assets images red.png ; class Circle extends React.Component { constructor...
There are two areas in the State and Lifecycle section that I don t quite understand 1. State Updates are Merged The merging is shallow, so this.setState ({comments}) leaves this.state.posts intact, but completely replaces this.state.comments. ...
like this [array [xxx], array [xxx], array [xxx].] merge all xxx in array into one array [xxx.] ...