Using for loops and switch cases in React to dynamically render different components 我正在尝试使用 React JSX 中的 switch case 有条件地渲染组件。我正在尝试构建从特定 json 结构读取并呈现数据的东西。由于可能有许多不同的组件和数据,我试图动态呈现它。请参阅下面的代码,我没有收到任何错误,但组件没有被...
在JSX中重构switch语句的方法是使用条件渲染。JSX是一种JavaScript的语法扩展,用于在React中构建用户界面。下面是在JSX中重构switch语句的步骤: 1. 定义一个变量或表达...
Herryjoeson commented Dec 2, 2018 问题描述 关于循环迭代中使用switch赋值jsx的问题 复现步骤 [复现问题的步骤] // 如果是在render函数使用switch是没有问题, let test = null; let test2 = 'a'; switch (test2) { case 'a': { test = <Text>测试</Text>; break; } default: { test = <Text>测...
原因在这里解释:https://react-cn.github.io/react/tips/if-else-in-JSX.html。 if-else 语句不适用于 JSX。这是因为 JSX 只是函数调用和对象构造的语法糖。 其次,如果我在逻辑块中包含了 4 个组件,并使用if (state.value === 'value1') else if (state.value === 'value2') else if (state.valu...
在JSX React Native中,由于switch语句在JavaScript中具有限制,我们通常使用其他方法来实现类似的功能。 一种常见的方法是使用if-else语句来模拟switch语句的行为。以下是一个示例: 代码语言:txt 复制 function renderComponent(option) { if (option === 'A') { return <ComponentA />; } else if (op...
In this small tutorial I would like to describe you 4 ways of performing conditional rendering in JSX. Maybe you already know some of them, maybe not, anyway hope it will be useful for you.In all the below examples let’s assume that you have headingLevel variable which can be h1, h2...
"\\.jsx?$"))) ;; Stop web-mode from using block comments in comment-dwim. (setq web-mode-comment-formats (-map-when (lambda (i) (equal (car i) "javascript")) (lambda (i) '("javascript" . "//")) web-mode-comment-formats)) (use-package web-mode :config (add-to-list 'au...
JSXScript JustMyCode KagiChart KeepTargetVersion Key Keyboard KeyColumn KeyVault KeyVertical KeywordSnippet KPI KPIBrowserView KPIWarning Label LandingPage LanguagePackage Large LastHistoryCommand LaunchConditionsEditor LaunchInstrumentationTargetBinary LaunchSamplingTarget Layer LayerDiagram LayerFillSlider LayoutEdit...
JSXScript JustMyCode KagiChart KeepTargetVersion 答案 鍵盤 KeyColumn KeyVault KeyVertical KeywordSnippet KPI KPIBrowserView KPIWarning 標籤 LandingPage LanguagePackage 大型 LastHistoryCommand LaunchConditionsEditor LaunchInstrumentationTargetBinary LaunchSamplingTarget 層 LayerDiagram LayerFillSlider LayoutEditorPart...
If you noticed, the tag doesn’t have an ending tag. Instead, it’s closed in the starting tag like , which iscompletely fine in JSX. You can test this component by updating theApp.jswith the below code. function App() {return (...