[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"verticals":3,"playground-clipboard-writetext-focus-bug":44,"search-suggestions":58},[4,20,32],{"id":5,"slug":6,"name":7,"tagline":8,"description":9,"accentFrom":10,"accentTo":11,"icon":12,"defaultLocale":13,"locales":14,"features":16,"position":19},"019fe637-3d33-714b-b57f-23e163ffca0c","dev","Web Development","Read it. Run it. Prove it.","A post a day on modern web development — most with an editable playground and a quiz that explains every answer. Free, no account needed.","violet-500","cyan-400","◇","en",[13,15],"fa",{"courses":17,"paths":17,"articles":17,"exams":18,"flashcards":18,"packages":17,"community":17,"certificates":17,"teams":17,"commerce":17},true,false,0,{"id":21,"slug":22,"name":23,"tagline":24,"description":25,"accentFrom":26,"accentTo":10,"icon":27,"defaultLocale":13,"locales":28,"features":30,"position":31},"019fe637-3dc2-754c-8657-0f175bfee7c6","lang","Languages","Learn a language the way you learn a codebase.","Grammar explained the way good documentation explains an API — one idea at a time, each with a quiz.","amber-400","⌘",[13,15,29],"es",{"courses":18,"paths":18,"articles":17,"exams":18,"flashcards":17,"packages":18,"community":17,"certificates":17,"teams":18,"commerce":18},2,{"id":33,"slug":34,"name":35,"tagline":36,"description":37,"accentFrom":38,"accentTo":39,"icon":40,"defaultLocale":13,"locales":41,"features":42,"position":43},"7b3c16f2-931d-410e-802e-e1fa4edab7de","soft","Soft Skills","The half of the job nobody wrote documentation for.","Weekly, on the parts of working life that decide more than your code does — first weeks, meetings, interviews, promotions, and the people around you. Written from what actually happens, and recorded as a podcast you can listen to on the walk.","emerald-400","teal-300","◉",[13],{"courses":18,"paths":18,"articles":17,"exams":18,"flashcards":18,"packages":18,"community":17,"certificates":18,"teams":18,"commerce":18},3,{"slug":45,"title":46,"summary":47,"html":48,"css":49,"js":50,"config":51,"doc":53},"clipboard-writetext-focus-bug","Clipboard timing lab — interactive playground",null,"\u003Cdiv class=\"pg\">\n    \u003Ch1 class=\"pg-title\">🎮 Clipboard timing lab\u003C\u002Fh1>\n    \u003Cp class=\"pg-sub\">\n      Two \"Copy invite link\" buttons. Both \u003Ccode>await\u003C\u002Fcode> a fake network call before copying.\n      One uses \u003Ccode>navigator.clipboard.writeText()\u003C\u002Fcode> — the naive way. The other uses\n      \u003Ccode>navigator.clipboard.write()\u003C\u002Fcode> with a \u003Cem>promise\u003C\u002Fem> as the data — the fix. Set a delay,\n      click a button, then \u003Cspan class=\"race\">switch tabs and back before the timer finishes\u003C\u002Fspan> to see\n      which one still works.\n    \u003C\u002Fp>\n\n    \u003Cdiv class=\"panel\">\n      \u003Cdiv class=\"panel-label\">\u003Cspan class=\"n\">1\u003C\u002Fspan> Set the delay\u003C\u002Fdiv>\n      \u003Cdiv class=\"field\">\n        \u003Clabel class=\"ctl-label\" for=\"delay\">Fake network delay: \u003Cspan id=\"delayOut\">1200\u003C\u002Fspan> ms\u003C\u002Flabel>\n        \u003Cinput type=\"range\" id=\"delay\" min=\"0\" max=\"3500\" step=\"100\" value=\"1200\" \u002F>\n      \u003C\u002Fdiv>\n      \u003Cdiv class=\"presets\" style=\"margin-top:10px\">\n        \u003Cbutton class=\"btn sm\" data-preset=\"0\">Instant (0ms)\u003C\u002Fbutton>\n        \u003Cbutton class=\"btn sm\" data-preset=\"1200\">Typical fetch (1200ms)\u003C\u002Fbutton>\n        \u003Cbutton class=\"btn sm\" data-preset=\"3000\">Slow network (3000ms)\u003C\u002Fbutton>\n      \u003C\u002Fdiv>\n      \u003Cp class=\"hint\">Higher delay = more time for you to alt-tab away before the write actually fires.\u003C\u002Fp>\n    \u003C\u002Fdiv>\n\n    \u003Cdiv class=\"panel\">\n      \u003Cdiv class=\"panel-label\">\u003Cspan class=\"n\">2\u003C\u002Fspan> Try the naive copy\u003C\u002Fdiv>\n      \u003Cdiv class=\"btn-row\">\n        \u003Cbutton class=\"btn bad\" id=\"naive\">Copy (naive: writeText after await)\u003C\u002Fbutton>\n      \u003C\u002Fdiv>\n      \u003Col class=\"steps\">\n        \u003Cli>Click the button.\u003C\u002Fli>\n        \u003Cli>Immediately switch to another tab or window, then switch back \u003Cem>before the status below changes\u003C\u002Fem>.\u003C\u002Fli>\n        \u003Cli>Watch the status: on most browsers this throws \u003Ccode>NotAllowedError\u003C\u002Fcode> because the document lost focus while the fetch was pending.\u003C\u002Fli>\n      \u003C\u002Fol>\n      \u003Cdiv class=\"status\" id=\"naiveStatus\" style=\"margin-top:12px\">\n        \u003Cspan class=\"dot info\" id=\"naiveDot\">\u003C\u002Fspan>\u003Cspan id=\"naiveText\">Ready.\u003C\u002Fspan>\n      \u003C\u002Fdiv>\n    \u003C\u002Fdiv>\n\n    \u003Cdiv class=\"panel\">\n      \u003Cdiv class=\"panel-label\">\u003Cspan class=\"n\">3\u003C\u002Fspan> Try the fixed copy\u003C\u002Fdiv>\n      \u003Cdiv class=\"btn-row\">\n        \u003Cbutton class=\"btn good\" id=\"robust\">Copy (fixed: write() with a Promise)\u003C\u002Fbutton>\n      \u003C\u002Fdiv>\n      \u003Cp class=\"hint\">\n        Do the exact same thing — tab away and back mid-delay. \u003Ccode>write()\u003C\u002Fcode> is called\n        \u003Cstrong>synchronously\u003C\u002Fstrong> inside this click, while focus is still guaranteed, and the text\n        itself arrives later via a promise. The clipboard slot stays reserved either way.\n      \u003C\u002Fp>\n      \u003Cdiv class=\"status\" id=\"robustStatus\" style=\"margin-top:12px\">\n        \u003Cspan class=\"dot info\" id=\"robustDot\">\u003C\u002Fspan>\u003Cspan id=\"robustText\">Ready.\u003C\u002Fspan>\n      \u003C\u002Fdiv>\n    \u003C\u002Fdiv>\n\n    \u003Cdiv class=\"panel\">\n      \u003Cdiv class=\"panel-label\">\u003Cspan class=\"n\">4\u003C\u002Fspan> Check what actually landed\u003C\u002Fdiv>\n      \u003Cdiv class=\"btn-row\">\n        \u003Cbutton class=\"btn ghost\" id=\"paste\">Read clipboard now\u003C\u002Fbutton>\n        \u003Cbutton class=\"btn ghost sm\" id=\"reset\">Reset\u003C\u002Fbutton>\n      \u003C\u002Fdiv>\n      \u003Cdiv class=\"linkbox\" id=\"pasteResult\">— nothing read yet —\u003C\u002Fdiv>\n      \u003Cp class=\"hint\" id=\"pasteHint\">\n        Some browsers restrict programmatic reads more than writes — if this button errors, paste manually\n        (Ctrl\u002FCmd+V) into any text field instead; that always reflects the real clipboard.\n      \u003C\u002Fp>\n    \u003C\u002Fdiv>\n  \u003C\u002Fdiv>","\u002F*\n * Shared playground design system — daily-post\n * ============================================\n * Link it from any post's playground\u002Findex.html (no per-post boilerplate):\n *\n *   \u003Clink rel=\"stylesheet\" href=\"..\u002F..\u002F..\u002Fplayground\u002Fassets\u002Fbase.css\" \u002F>\n *\n * The relative path resolves the same locally (posts\u002F\u003Cbase>\u002Fplayground\u002F) and on\n * the deployed host (public\u002Fposts\u002F\u003Cbase>\u002Fplayground\u002F), because build-site.js\n * mirrors this file to public\u002Fplayground\u002Fassets\u002Fbase.css. For a CodeSandbox\n * --embed, playground.js inlines this file so the single-file sandbox still styles.\n *\n * Then write ONLY the demo-specific CSS in your inline \u003Cstyle>. Everything below\n * — tokens, layout, panels, buttons, toggles, sliders, code blocks, status\u002Flog,\n * banners, presets — comes for free and looks consistent across every post.\n *\n * Theme-aware: dark by default, light via prefers-color-scheme AND a\n * [data-theme] override on \u003Chtml> (so a toggle can force either). Accessible:\n * real focus rings, adequate contrast, reduced-motion honored.\n *\u002F\n\n\u002F* ---------- design tokens ---------- *\u002F\n:root {\n  --bg: #0d1117;\n  --bg-grid: #ffffff0a;\n  --panel: #161b22;\n  --panel-2: #0b0e14;\n  --card: #0b0e14;\n  --ink: #e8ebf2;\n  --muted: #9aa4b2;\n  --faint: #6b7688;\n  --line: #232a35;\n  --line-soft: #ffffff12;\n  --accent: #7c9cff;\n  --accent-ink: #0b0e14;\n  --good: #3fb950;\n  --warn: #f0883e;\n  --bad: #f85149;\n  --info: #58a6ff;\n  --radius: 14px;\n  --radius-sm: 9px;\n  --shadow: 0 8px 30px #0006;\n  --shadow-sm: 0 4px 14px #0005;\n  --mono: ui-monospace, SFMono-Regular, \"SF Mono\", Menlo, Consolas, \"Liberation Mono\", monospace;\n  --sans: ui-sans-serif, system-ui, -apple-system, \"Segoe UI\", Roboto, \"Helvetica Neue\", sans-serif;\n  color-scheme: dark;\n}\n\n\u002F* Light theme — system preference, overridable by [data-theme] on \u003Chtml>. *\u002F\n@media (prefers-color-scheme: light) {\n  :root:not([data-theme=\"dark\"]) {\n    --bg: #f4f6fb;\n    --bg-grid: #00000008;\n    --panel: #ffffff;\n    --panel-2: #f0f3f9;\n    --card: #f7f9fc;\n    --ink: #131722;\n    --muted: #5b6472;\n    --faint: #8a93a3;\n    --line: #e2e7f0;\n    --line-soft: #00000010;\n    --accent: #2f6df0;\n    --accent-ink: #ffffff;\n    --good: #1a7f37;\n    --warn: #bc4c00;\n    --bad: #cf222e;\n    --info: #0969da;\n    --shadow: 0 8px 30px #0000001f;\n    --shadow-sm: 0 4px 14px #00000014;\n    color-scheme: light;\n  }\n}\n:root[data-theme=\"light\"] {\n  --bg: #f4f6fb;\n  --bg-grid: #00000008;\n  --panel: #ffffff;\n  --panel-2: #f0f3f9;\n  --card: #f7f9fc;\n  --ink: #131722;\n  --muted: #5b6472;\n  --faint: #8a93a3;\n  --line: #e2e7f0;\n  --line-soft: #00000010;\n  --accent: #2f6df0;\n  --accent-ink: #ffffff;\n  --good: #1a7f37;\n  --warn: #bc4c00;\n  --bad: #cf222e;\n  --info: #0969da;\n  --shadow: 0 8px 30px #0000001f;\n  --shadow-sm: 0 4px 14px #00000014;\n  color-scheme: light;\n}\n\n\u002F* ---------- reset & base ---------- *\u002F\n*, *::before, *::after { box-sizing: border-box; }\n\nbody {\n  margin: 0;\n  min-height: 100vh;\n  font-family: var(--sans);\n  color: var(--ink);\n  background:\n    radial-gradient(circle at 1px 1px, var(--bg-grid) 1px, transparent 0) 0 0 \u002F 24px 24px,\n    var(--bg);\n  display: flex;\n  justify-content: center;\n  align-items: flex-start;\n  padding: clamp(14px, 3vw, 26px);\n  line-height: 1.55;\n  -webkit-font-smoothing: antialiased;\n  text-rendering: optimizeLegibility;\n}\n\n\u002F* The single content column. *\u002F\n.pg {\n  width: 100%;\n  max-width: 860px;\n}\n\n\u002F* ---------- header ---------- *\u002F\n.pg-title {\n  font-size: clamp(1.15rem, 1rem + 1vw, 1.4rem);\n  font-weight: 800;\n  letter-spacing: -0.02em;\n  margin: 0 0 4px;\n  display: flex;\n  align-items: center;\n  gap: 9px;\n}\n.pg-sub {\n  color: var(--muted);\n  font-size: 0.92rem;\n  line-height: 1.5;\n  margin: 0 0 16px;\n  max-width: 66ch;\n}\n.pg-sub strong, .pg-sub b { color: var(--ink); font-weight: 700; }\n.pg-sub code { font-family: var(--mono); background: var(--line-soft); color: var(--accent);\n  padding: 1px 6px; border-radius: 6px; font-size: 0.85em; }\n\n\u002F* ---------- panels ---------- *\u002F\n.panel {\n  background: var(--panel);\n  border: 1px solid var(--line);\n  border-radius: var(--radius);\n  padding: 16px 18px;\n  margin-bottom: 14px;\n  box-shadow: var(--shadow-sm);\n}\n.panel-label {\n  font-size: 0.7rem;\n  text-transform: uppercase;\n  letter-spacing: 0.08em;\n  color: var(--muted);\n  font-weight: 800;\n  margin: 0 0 13px;\n  display: flex;\n  align-items: center;\n  gap: 8px;\n}\n.panel-label .n {\n  display: inline-grid; place-items: center;\n  width: 18px; height: 18px; border-radius: 50%;\n  background: var(--accent); color: var(--accent-ink);\n  font-size: 0.66rem; font-weight: 800;\n}\n\n\u002F* ---------- layout helpers ---------- *\u002F\n.row { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; }\n.row.between { justify-content: space-between; }\n.col { display: flex; flex-direction: column; gap: 10px; }\n.grow { flex: 1 1 0; min-width: 0; }\n.wrap-controls { display: flex; flex-wrap: wrap; gap: 16px 24px; align-items: flex-end; }\n.field { display: flex; flex-direction: column; gap: 7px; min-width: 0; }\n.field > .label, .ctl-label {\n  font-size: 0.7rem; text-transform: uppercase; letter-spacing: 0.04em;\n  color: var(--muted); font-weight: 800;\n}\n\n\u002F* ---------- buttons ---------- *\u002F\n.btn {\n  font: inherit; font-weight: 650; font-size: 0.88rem;\n  cursor: pointer; user-select: none;\n  border: 1px solid var(--line);\n  background: var(--card); color: var(--ink);\n  padding: 9px 15px; border-radius: var(--radius-sm);\n  display: inline-flex; align-items: center; gap: 8px;\n  transition: background .15s ease, border-color .15s ease, transform .05s ease, color .15s ease;\n}\n.btn:hover { background: var(--line-soft); border-color: var(--muted); }\n.btn:active { transform: translateY(1px); }\n.btn:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }\n.btn[disabled] { opacity: 0.45; cursor: not-allowed; }\n.btn.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }\n.btn.primary:hover { filter: brightness(1.08); background: var(--accent); }\n.btn.good { background: var(--good); border-color: var(--good); color: #04140a; }\n.btn.bad  { background: var(--bad);  border-color: var(--bad);  color: #fff; }\n.btn.ghost { background: transparent; }\n.btn.sm { padding: 6px 11px; font-size: 0.82rem; }\n\n.btn-row { display: flex; flex-wrap: wrap; gap: 9px; }\n\n\u002F* Segmented control — a row of buttons where one is active (aria-pressed). *\u002F\n.seg { display: inline-flex; background: var(--card); border: 1px solid var(--line);\n  border-radius: var(--radius-sm); padding: 3px; gap: 3px; }\n.seg button {\n  font: inherit; font-weight: 650; font-size: 0.84rem; cursor: pointer;\n  border: none; background: transparent; color: var(--muted);\n  padding: 7px 13px; border-radius: 7px;\n  transition: background .15s ease, color .15s ease;\n}\n.seg button:hover { color: var(--ink); }\n.seg button[aria-pressed=\"true\"] { background: var(--accent); color: var(--accent-ink); }\n.seg button:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }\n\n\u002F* Preset chips — worked-example shortcuts. *\u002F\n.presets { display: flex; flex-wrap: wrap; gap: 8px; }\n.presets .btn { background: var(--panel-2); }\n\n\u002F* ---------- toggle switch ---------- *\u002F\n.toggle { display: inline-flex; align-items: center; gap: 10px; cursor: pointer;\n  font-size: 0.88rem; font-weight: 600; user-select: none; }\n.toggle input { position: absolute; opacity: 0; width: 0; height: 0; }\n.switch { position: relative; width: 44px; height: 25px; border-radius: 999px; flex: none;\n  background: var(--line); border: 1px solid var(--line); transition: background .18s ease; }\n.switch::after { content: \"\"; position: absolute; top: 2px; left: 2px; width: 19px; height: 19px;\n  border-radius: 50%; background: #cfd6e4; transition: transform .18s ease; box-shadow: 0 1px 3px #0006; }\n.toggle input:checked + .switch { background: var(--good); border-color: var(--good); }\n.toggle input:checked + .switch::after { transform: translateX(19px); background: #fff; }\n.toggle input:focus-visible + .switch { outline: 2px solid var(--accent); outline-offset: 2px; }\n\n\u002F* ---------- range slider ---------- *\u002F\ninput[type=\"range\"] {\n  -webkit-appearance: none; appearance: none; width: 100%; height: 6px;\n  background: var(--line); border-radius: 999px; outline: none; cursor: pointer; margin: 8px 0;\n}\ninput[type=\"range\"]::-webkit-slider-thumb {\n  -webkit-appearance: none; appearance: none; width: 19px; height: 19px; border-radius: 50%;\n  background: var(--accent); border: 2px solid var(--panel); box-shadow: var(--shadow-sm); cursor: pointer;\n}\ninput[type=\"range\"]::-moz-range-thumb {\n  width: 19px; height: 19px; border-radius: 50%; background: var(--accent);\n  border: 2px solid var(--panel); box-shadow: var(--shadow-sm); cursor: pointer;\n}\ninput[type=\"range\"]:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }\n\n\u002F* ---------- text inputs \u002F selects ---------- *\u002F\ninput[type=\"text\"], input[type=\"number\"], input[type=\"search\"], select, textarea {\n  font: inherit; color: var(--ink); background: var(--card);\n  border: 1px solid var(--line); border-radius: var(--radius-sm); padding: 8px 11px; width: 100%;\n}\ntextarea { font-family: var(--mono); font-size: 0.85rem; line-height: 1.6; resize: vertical; }\ninput:focus-visible, select:focus-visible, textarea:focus-visible {\n  outline: 2px solid var(--accent); outline-offset: 1px; border-color: var(--accent);\n}\n\n\u002F* ---------- status \u002F output \u002F log ---------- *\u002F\n.status {\n  display: flex; align-items: center; gap: 9px; flex-wrap: wrap;\n  font-size: 0.9rem; font-weight: 600;\n  padding: 11px 14px; border-radius: var(--radius-sm);\n  background: var(--panel-2); border: 1px solid var(--line); color: var(--ink);\n}\n.status.good { border-color: color-mix(in srgb, var(--good) 55%, var(--line)); }\n.status.warn { border-color: color-mix(in srgb, var(--warn) 55%, var(--line)); }\n.status.bad  { border-color: color-mix(in srgb, var(--bad) 55%, var(--line)); }\n.dot { width: 9px; height: 9px; border-radius: 50%; background: var(--muted); flex: none; }\n.dot.good { background: var(--good); } .dot.warn { background: var(--warn); }\n.dot.bad { background: var(--bad); } .dot.info { background: var(--info); }\n\n.output { background: var(--panel-2); border: 1px solid var(--line); border-radius: var(--radius-sm);\n  padding: 13px 15px; }\n.log { font-family: var(--mono); font-size: 0.8rem; line-height: 1.7; background: var(--card);\n  border: 1px solid var(--line); border-radius: var(--radius-sm); padding: 11px 14px;\n  max-height: 220px; overflow-y: auto; white-space: pre-wrap; }\n\n\u002F* ---------- code block + syntax tokens ---------- *\u002F\n.code {\n  font-family: var(--mono); font-size: 0.82rem; line-height: 1.7;\n  background: var(--panel-2); border: 1px solid var(--line); border-radius: var(--radius-sm);\n  padding: 13px 15px; overflow-x: auto; white-space: pre; tab-size: 2;\n}\n.code .tok-sel  { color: var(--accent); }\n.code .tok-prop { color: #86e29b; }\n.code .tok-kw   { color: #ff9bcb; }\n.code .tok-str  { color: #f0c674; }\n.code .tok-num  { color: #f0883e; }\n.code .tok-cmt  { color: var(--faint); font-style: italic; }\n.code .hl { background: color-mix(in srgb, var(--good) 22%, transparent); border-radius: 4px; padding: 0 3px; }\n\n\u002F* ---------- hint \u002F caption ---------- *\u002F\n.hint { font-size: 0.83rem; color: var(--muted); line-height: 1.55; margin: 10px 0 0; }\n.hint code { font-family: var(--mono); color: var(--ink); background: var(--line-soft);\n  padding: 1px 5px; border-radius: 5px; font-size: 0.86em; }\n.hint strong { color: var(--ink); }\n\n\u002F* ---------- banner (feature-support \u002F notices) ---------- *\u002F\n.banner {\n  display: none; margin-bottom: 14px; padding: 11px 14px; border-radius: 11px;\n  font-size: 0.85rem; line-height: 1.5;\n  color: var(--ink); background: color-mix(in srgb, var(--warn) 12%, var(--panel));\n  border: 1px solid color-mix(in srgb, var(--warn) 45%, var(--line));\n}\n.banner.show { display: block; }\n.banner.info { background: color-mix(in srgb, var(--info) 12%, var(--panel));\n  border-color: color-mix(in srgb, var(--info) 45%, var(--line)); }\n.banner code { font-family: var(--mono); background: var(--line-soft); padding: 1px 5px; border-radius: 5px; }\n\n\u002F* ---------- misc atoms ---------- *\u002F\n.pill { display: inline-flex; align-items: center; gap: 6px; font-size: 0.75rem; font-weight: 700;\n  padding: 3px 9px; border-radius: 999px; background: var(--line-soft); color: var(--muted); }\n.pill.good { color: var(--good); background: color-mix(in srgb, var(--good) 16%, transparent); }\n.pill.bad  { color: var(--bad);  background: color-mix(in srgb, var(--bad) 16%, transparent); }\n.mono { font-family: var(--mono); }\n.muted { color: var(--muted); }\n.big-num { font-family: var(--mono); font-size: 1.6rem; font-weight: 800; letter-spacing: -0.02em; }\n\n\u002F* Optional theme toggle button (top-right). Wire it in JS if you want it. *\u002F\n.theme-btn { position: fixed; top: 12px; right: 12px; z-index: 20; }\n\n\u002F* ---------- responsive ---------- *\u002F\n@media (max-width: 560px) {\n  .panel { padding: 14px; }\n  .wrap-controls { gap: 14px; }\n  .btn { padding: 9px 13px; }\n}\n\n\u002F* ---------- reduced motion ---------- *\u002F\n@media (prefers-reduced-motion: reduce) {\n  *, *::before, *::after { transition-duration: 0.01ms !important; animation-duration: 0.01ms !important; }\n}\n\n\n.linkbox {\n    font-family: var(--mono, ui-monospace, monospace);\n    font-size: 0.85rem;\n    padding: 10px 12px;\n    border: 1px dashed var(--line);\n    border-radius: var(--radius-sm);\n    background: var(--panel-2);\n    word-break: break-all;\n    margin-top: 10px;\n  }\n  .steps {\n    margin: 10px 0 0;\n    padding-left: 20px;\n    font-size: 0.9rem;\n    color: var(--muted);\n  }\n  .steps li { margin: 4px 0; }\n  .race { color: var(--accent, #6cf); font-weight: 600; }","\"use strict\";\n  const $ = (id) => document.getElementById(id);\n  let counter = 0;\n\n  function setStatus(dotEl, textEl, text, kind) {\n    dotEl.className = \"dot \" + kind;\n    textEl.textContent = text;\n  }\n\n  const delaySlider = $(\"delay\");\n  delaySlider.addEventListener(\"input\", () => { $(\"delayOut\").textContent = delaySlider.value; });\n  document.querySelectorAll(\"[data-preset]\").forEach((btn) => {\n    btn.addEventListener(\"click\", () => {\n      delaySlider.value = btn.dataset.preset;\n      $(\"delayOut\").textContent = btn.dataset.preset;\n    });\n  });\n\n  function fakeFetchLink() {\n    counter++;\n    const ms = Number(delaySlider.value);\n    return new Promise((resolve) => {\n      setTimeout(() => resolve(`https:\u002F\u002Fexample.com\u002Finvite\u002F${Date.now()}-${counter}`), ms);\n    });\n  }\n\n  \u002F\u002F The naive version: await the \"network\" call, THEN call writeText().\n  \u002F\u002F Any focus loss during the await surfaces here as a rejected promise.\n  $(\"naive\").addEventListener(\"click\", async () => {\n    setStatus($(\"naiveDot\"), $(\"naiveText\"), \"Waiting on the fake network call…\", \"warn\");\n    try {\n      const url = await fakeFetchLink();\n      await navigator.clipboard.writeText(url);\n      setStatus($(\"naiveDot\"), $(\"naiveText\"), \"✅ Copied: \" + url, \"good\");\n    } catch (err) {\n      setStatus($(\"naiveDot\"), $(\"naiveText\"), \"❌ \" + err.name + \": \" + err.message, \"bad\");\n    }\n  });\n\n  \u002F\u002F The fixed version: call write() synchronously, right now, in the click —\n  \u002F\u002F the ClipboardItem's data is a Promise that resolves once the \"network\" replies.\n  $(\"robust\").addEventListener(\"click\", () => {\n    setStatus($(\"robustDot\"), $(\"robustText\"), \"Reserved the clipboard slot — data still loading…\", \"warn\");\n    const linkPromise = fakeFetchLink().then((url) => new Blob([url], { type: \"text\u002Fplain\" }));\n\n    navigator.clipboard\n      .write([new ClipboardItem({ \"text\u002Fplain\": linkPromise })])\n      .then(async () => {\n        const url = await linkPromise.then((b) => b.text());\n        setStatus($(\"robustDot\"), $(\"robustText\"), \"✅ Copied: \" + url, \"good\");\n      })\n      .catch((err) => {\n        setStatus($(\"robustDot\"), $(\"robustText\"), \"❌ \" + err.name + \": \" + err.message, \"bad\");\n      });\n  });\n\n  $(\"paste\").addEventListener(\"click\", async () => {\n    try {\n      const text = await navigator.clipboard.readText();\n      $(\"pasteResult\").textContent = text || \"(clipboard is empty)\";\n    } catch (err) {\n      $(\"pasteResult\").textContent = \"Couldn't read (\" + err.name + \"). Try pasting manually instead.\";\n    }\n  });\n\n  $(\"reset\").addEventListener(\"click\", () => {\n    setStatus($(\"naiveDot\"), $(\"naiveText\"), \"Ready.\", \"info\");\n    setStatus($(\"robustDot\"), $(\"robustText\"), \"Ready.\", \"info\");\n    $(\"pasteResult\").textContent = \"— nothing read yet —\";\n  });",{"height":52,"autorun":17},520,{"slug":45,"title":54,"excerpt":55,"coverUrl":56,"vertical":57},"The await That Silently Breaks navigator.clipboard.writeText()","navigator.clipboard.writeText() only works while the document is focused and the user gesture is still fresh. Any await before the call can let both expire, so a copy button fails with an uncaught NotAllowedError and nobody ever sees why.","\u002Fmedia\u002Fcovers\u002Fclipboard-writetext-focus-bug.png",{"slug":6},[59,63,67,71,75,79,83,87,91,95,99,102],{"slug":60,"name":61,"articles":62},"webdev","Webdev",79,{"slug":64,"name":65,"articles":66},"frontend","Frontend",67,{"slug":68,"name":69,"articles":70},"javascript","Javascript",66,{"slug":72,"name":73,"articles":74},"css","Css",29,{"slug":76,"name":77,"articles":78},"tutorial","Tutorial",16,{"slug":80,"name":81,"articles":82},"typescript","Typescript",11,{"slug":84,"name":85,"articles":86},"performance","Performance",10,{"slug":88,"name":89,"articles":90},"react","React",8,{"slug":92,"name":93,"articles":94},"grammar","Grammar",6,{"slug":96,"name":97,"articles":98},"html","Html",5,{"slug":100,"name":101,"articles":98},"node","Node",{"slug":103,"name":104,"articles":105},"programming","Programming",4]