React是一个用于构建用户界面的JavaScript库。它使用声明范式，旨在既高效又灵活。
window.addEventListener('scroll', () => { (!this.state.showScrollWidget) ? this.setState({showScrollWidget: true}) : null; })
我用传奇，文字和注释做了一个散点图。但是，当我单击传说文本和与气泡相关的注释时。请检查以下代码。 const getannotati ...
const getAnnotations = () => { if (totalRecords <= 10) { const annotations: any[] = []; const placedPositions: { x: number; y: number }[] = []; const groupedData = new Map<string, { storeLabels: string[], x: number, y: number, z: number }>(); // Group data by total_sales and spearman_correlation data.forEach((item) => { const storeLabel = item[firstColumnFieldName] || "Unknown Store"; const key = `${item.total_sales}-${item.spearman_correlation}`; if (!groupedData.has(key)) { groupedData.set(key, { storeLabels: [], x: item.total_sales, y: item.spearman_correlation, z: item.max_sales }); } groupedData.get(key)!.storeLabels.push(storeLabel); }); // Alternating offsets for y (up and down) let isPositiveYOffset = true; groupedData.forEach(({ storeLabels, x, y, z }) => { // Only include annotations where spearman_correlation is greater than 0.2 or less than -0.2 if (y <= 0.5 && y >= -0.5) return; // Skip if correlation is between -0.2 and 0.2 const combinedLabel = storeLabels.join(", <br>"); // Combine store names with commas const isShortLabel = combinedLabel.length <= 3; // Check if label is short // Calculate bubble size based on total_sales (or another metric if necessary) const bubbleSize = calculateBubbleSize(y, totalRecords, x, z, allLessThanOrEqualZero); // Check if label can fit inside the bubble const labelFitsInsideBubble = !isLabelTooBig(combinedLabel, bubbleSize); // Alternate between positive and negative y offsets for annotation placement const yOffset = isPositiveYOffset ? 30 : -30; // Switch between positive and negative offsets for next annotation isPositiveYOffset = !isPositiveYOffset; // Function to check if an annotation overlaps with either an existing bubble or annotation const isOverlapping = (x: number, y: number, bubbleSize: number) => { // Check if it overlaps with other annotations const annotationOverlap = placedPositions.some(pos => { const distance = calculateDistance(pos.x, pos.y, x, y); return distance < bubbleSize * 0.8; // Adjust threshold as necessary for annotations }); // Check if it overlaps with any bubbles const bubbleOverlap = placedPositions.some(pos => { const distance = calculateDistance(pos.x, pos.y, x, y); return distance < bubbleSize; // Adjust threshold for bubbles }); // If either overlaps, return true return annotationOverlap || bubbleOverlap; }; // Apply the y offset and check for overlap with bubbles and annotations let currentX = x; // Keep the x position same for each annotation let currentY = y + yOffset; // Apply y offset (up/down) // If it overlaps with existing bubbles or annotations, skip this annotation if (isOverlapping(currentX, currentY, bubbleSize)) { return; } // No overlap, so add the position placedPositions.push({ x: currentX, y: currentY }); // Add the annotation to the list annotations.push({ x: x, y: y, text: `<b>${combinedLabel}</b>`, // Display combined label showarrow: !labelFitsInsideBubble, // Show arrow if label is outside arrowhead: 1, arrowwidth: 2, ax: labelFitsInsideBubble ? 10 : 30, // Offset if label is too big ay: labelFitsInsideBubble ? yOffset : -yOffset, // Adjust vertical offset if label is too big font: { size: labelFitsInsideBubble ? 12 : 10, color: labelFitsInsideBubble ? "white" : "black", weight: "800" }, bgcolor: labelFitsInsideBubble ? "transparent" : "white", // Transparent if label fits bordercolor: labelFitsInsideBubble ? "transparent" : "black", borderradius: 10, // Rounded corners xanchor: isShortLabel ? "center" : undefined, yanchor: isShortLabel ? "middle" : undefined, arrowcolor: "black", // Set arrow color }); }); return annotations; } return []; };
const technical AnalysisIndicators =（{data：initiaLdata，width，ratio}）=> { const [data，setData] = usestate（initiaLdata）; const [rawdata，setRawdata] = usestate（）; const fet ...
tailwind.config.js theme: { extend: { colors: { lightHover: '#fcf4ff', darkHover: '#2a004a', darktheme: '#11001f', }, fontFamily: { Outfit: ["Outfit", "sans-serif"], Ovo: ["Ovo", "serif"] }, boxShadow: { 'black': '4px 4px 0 #000', 'white': '4px 4px 0 #fff', }, gridTemplateColumns: { 'auto': 'repeat(auto-fit, minmax(200px, 1fr))' } }, }, darkMode: 'selector',
Micro前端对象无效，因为React子女（typecript）
SO，最近我试图将Micro Frontend实现为我的React Vite Typescript样板作为主机。我使用 @OriginJS/Vite-Plugin-Federation，因为我的项目主要使用Vite运行。我tri ...
MMSAL，REACT，VITE＆REDUX-组件测试无法工作
对于我的寿命，我无法获得简单的组件测试来与此设置（Vite，React，Typescript，Redux-Toolkit和MSAL）一起使用。 任何帮助将不胜感激。 我有一个简单的菜单组合...
Https：//www.primefaces.org/primereact/datatable/edit/dit/decon/decontion/primereaeact/primereact/datatable/decont of。按钮我无法做到这一点。我遇到的问题是，当我在自定义组件上捕获点击事件时，我无法在该事件处理程序中获取网格的数据或任何React状态变量，因此无法执行编辑。
我们拥有通过查找HTML标签并渲染组件的自定义资产。例如，我们有。 当页面加载脚本时，找到<customABC /> <customABC ...</desc> <question vote="4">我们拥有通过查找HTML标签并渲染组件的自定义资产。例如，我们有<p><code><script></code><pre>。 当页面加载脚本时，找到</pre><code><customABC /></code><pre>并返回该组件应该是什么。 我正在尝试通过以下内容将脚本添加到我的文档，然后调用渲染。 </pre><code><customABC /></code><pre> </pre>debug（）仍在显示</p><code> describe('DisclaimerContainer render tests', () => { test('simple Disclaimer renders disclaimer content', () => { const moduleScript = document.createElement('script'); moduleScript.src = "https://www.example.com/assets/foo/bar/5.7.0/components.js"; moduleScript.type = "module"; moduleScript.async = true; document.body.appendChild(moduleScript); //I've also tried document.head.appendChild(moduleScript); const {debug} = render(<ContextDisclaimerContainer history={history}/>); debug(); }); </code><p>，而不是它应该显示的HTML。 </p>当您没有NPM软件包，需要包含自定义脚本时，如何将其配置为在您的React-Testing-library Jest Test中运行？ <pre> </pre> 我成功地通过在开玩笑的设置文件中自定义JSDOD来成功加载脚本：<p> <pre><code><customABC /></code></pre> </p>关键是用<p><code>// jest.config.js module.exports = { setupFilesAfterEnv: [ './jest-setup.js', ], }; // jest-setup.js import { JSDOM } from 'jsdom'; const dom = new JSDOM(<!DOCTYPE html><body></body>, { resources: 'usable', runScripts: 'dangerously', }); global.window = dom.window; global.document = dom.window.document; </code></p>配置JSDOM。请参阅</question>ExecutingScriptss<answer tick="false" vote="3">的JSDOM文档。 <p> </p> 您可以在Jest Config（假设JSDOM环境）中设置这些选项：<pre> </pre><code>{ resources: 'usable', runScripts: 'dangerously' }</code><p> <pre>请参阅有关配置测试环境的执行脚本</pre>和JEST文档的文档。 <a href="https://github.com/jsdom/jsdom#executing-scripts" rel="nofollow noreferrer"> </a> 我很亲密，但需要两件事才能使它起作用。 </p> 就像其他提到的其他人一样，允许JSDOM执行脚本。 </answer><code> testEnvironment: 'jsdom', testEnvironmentOptions: { resources: 'usable', runScripts: 'dangerously', }, </code><answer tick="false" vote="3"> <p> 我的组件实际上加载了脚本</p>和<pre>我必须等待我的测试可访问预期的更改。 </pre><code>// In "jest.react.config.json" { "testEnvironment": "jsdom", "testEnvironmentOptions": { "resources": "usable", "runScripts": "dangerously" }, } </code><p> <a href="https://github.com/jsdom/jsdom#executing-scripts" rel="nofollow noreferrer"><code>// In your component file const ComponentBeingTested = ({}) => { ... useEffect(() => { const script = document.createElement("script"); script.src = "https://accounts.google.com/gsi/client"; script.onerror = e => console.log('error :>> ', e); document.head.appendChild(script); return () => { document.head.removeChild(script); // Clean up on unmount }; }, []); ... }); </code></a> <a href="https://jestjs.io/docs/configuration#testenvironment-string" rel="nofollow noreferrer"> </a> </p> </answer><answer tick="false" vote="0">
制作AddJob＆deletejob，现在我还添加了Toastify插件时，我注意到当我删除Job时，这将不起作用，并且问题似乎在尝试获取数据。
目标是在用户离开页面之前保存表单。 在我们从v.5切换到React-Router v.7之前，我们使用了历史程序包，该软件包仅与React-Router兼容至V.6。 我们使用的代码...
对以下代码进行了处理： 导入类型{reactnode}来自'react' 从“反应”中导入反应 类型props = { 标题：ReactNode } 导出const comp：react.fc=（{title}）=> { 返回...