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problemFirst, the entire page layout is as follows: In the actual development, it is found that all area click events in the following red box have no effect and will not be triggered Problem locationRN basic touch component attemptTouchableHighlight,TouchableNativeFeedback, TouchableOpacity , TouchableWithoutFeedbackonPressIn: click start;on ...

1. Introduction to JSX A simple declaration instance const element = <h3>Hello, React!</h3> The tag syntax in the above example is neither string nor HTML. It is called JSX and is a syntax extension of JavaScript. We suggest using JSX in React. JSX can well describe that the UI should present the essential form of interaction ...

Use of state and setState State: initialize data value Deconstruct the initial value in state in the render function: for example, const {count} = this state; setState: used to update data Master various uses of setState: Syntax: setState(updater, [callback]) updater: update data FUNCTION/OBJECTCallback: callback FUNCTION after successful upd ...

1. What problem is hook used to solve In a word, Hook is used to make us better reuse React state logic code. Note that this is not a template code, which can be reused with components; The simple state logic code can not be reused with components Some students may say that ordinary functions can realize logical code reuse? The answer is: ...

1. Foreword When talking about React, we have to mention redux. Although not every project must use Redux, as a new generation of migrant workers (national certification), we must understand the relevant concepts so that we can start immediately. In recent projects, we didn't use Redux very much. In order to prevent forgetting, we thought abou ...

elaborate In the previous section, we solved the problem of link jump. Now imagine such a scenario. In a list page of many articles, and then click any link, you can accurately open the detailed article content. This needs to pass the article ID, then accurately retrieve the article content in the background, and finally present it. In th ...

react source code analysis 6 Legacy mode and concurrent modeVideo Explanation (efficient learning): Enter learningPrevious articles:1. Introduction and interview questions2. Design concept of react3.react source code architecture4. Source directory structure and debugging5. JSX & Core api6.legacy and concurrent mode entry functions7.Fiber a ...

react source code analysis 12 Status update processVideo Explanation (efficient learning): Enter learningPrevious articles:1. Introduction and interview questions2. Design concept of react3.react source code architecture4. Source directory structure and debugging5. JSX & Core api6.legacy and concurrent mode entry functions7.Fiber architectu ...

1. What is HOOK The function component built in the system in React component is a new feature in version 16.8. It is used to support the addition of specially modified data and life cycle management of components during functional component development Core: service functional component Function: status management mode Function 2: life cy ...

react source code analysis 9 Diff algorithm Video Explanation (efficient learning): Enter learning Previous articles: 1. Introduction and interview questions 2. Design concept of react 3.react source code architecture 4. Source directory structure and debugging 5. JSX & Core api 6.legacy and concurrent mode entry functions 7.Fiber ...