31:T436,function toc(selector = "h1,h2,h3,h4", heading = "Table of Contents", startOpen = true) { return Generators.observe(notify => { let headings = []; let detailsOpen = startOpen ? "open" : ""; function observed() { const h = Array.from(document.querySelectorAll(selector)); if (h.length !== headings.length || h.some((h, i) => headings[i] !== h)) { notify(html`

${heading}

' : '
'}${DOM.text(h.textContent)}`, {onclick: e => (e.preventDefault(), h.scrollIntoView())} ); })}`); } } const observer = new MutationObserver(observed); observer.observe(document.body, {childList: true, subtree: true}); observed(); return () => observer.disconnect(); }); }32:[] 2f:{"title":"Collapsible TOC","cells":[{"id":0,"value":"md`# Collapsible TOC\n\nThis notebook can generate a collapsible table of contents automatically for your notebook. It is based on [Collapsible TOC](https://observablehq.com/@heytitle/collapsible-toc) by Pat Chormai \n\n\\`\\`\\`js\nimport {toc} from \"@jonfroehlich/collapsible-toc\"\n\\`\\`\\``","pinned":false,"hidden":false,"mode":"ojs"},{"id":93,"value":"Here's an example that has all the defaults:","pinned":false,"hidden":false,"mode":"md"},{"id":30,"value":"toc()","pinned":false,"hidden":false,"mode":"ojs"},{"id":105,"value":"Here's an example that will only show Headings1 and Headings2 and starts in a collapsed state:","pinned":false,"hidden":false,"mode":"md"},{"id":109,"value":"toc(\"h1,h2\", undefined, false)","pinned":false,"hidden":false,"mode":"ojs"},{"id":37,"value":"md`## Implementation`","pinned":false,"hidden":false,"mode":"ojs"},{"id":4,"value":"$31","pinned":true,"hidden":false,"mode":"ojs"},{"id":62,"value":"### Test Level 2","pinned":true,"hidden":false,"mode":"md"},{"id":67,"value":"#### Test Level 3\nHello!","pinned":true,"hidden":false,"mode":"md"},{"id":42,"value":"md`## Hooray\n\nIt worked!`","pinned":false,"hidden":false,"mode":"ojs"},{"id":82,"value":"# Heading 1\nTest level 1","pinned":false,"hidden":false,"mode":"md"},{"id":70,"value":"## Test Level 2\nTest Level 2\n### Test Level 3\nTest Level 3\n#### Test Level 4\nTest Level 4","pinned":false,"hidden":false,"mode":"md"}],"files":"$W32","stdlib":"1","titling":"auto"}