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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,50 @@ | ||
| // Think Metric | ||
|
|
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| const app = { | ||
| restoreChecklist(listElem) { | ||
| // Set checklist task items according to previously saved values. | ||
| const checklist = JSON.parse(globalThis.localStorage.getItem('checklist')); | ||
| const setCheckbox = (li) => | ||
| li.querySelector('input[type=checkbox]').checked = checklist[li.id]; | ||
| if (checklist) | ||
| [...listElem.children].forEach(setCheckbox); | ||
| }, | ||
| saveChecklist(checklistElem) { | ||
| // Record current status of checklist tasks to Local Storage. | ||
| const tasks = [...checklistElem.querySelectorAll('li')]; | ||
| const isChecked = (li) => li.querySelector('input[type=checkbox]').checked; | ||
| const checklist = Object.fromEntries(tasks.map(li => [li.id, isChecked(li)])); | ||
| globalThis.localStorage.setItem('checklist', JSON.stringify(checklist)); | ||
| }, | ||
| setupArticlePage() { | ||
| // <div id=article-nav> | ||
| // <i data-icon=circle-left></i> | ||
| // <i data-icon=circle-right></i> | ||
| // <ul><li><a href=../../article/go-metric>Go Metric<a><li>... | ||
| // </div> | ||
| const container = globalThis.document.getElementById('article-nav'); | ||
| const articles = [...container.querySelectorAll('ul >li >a')]; | ||
| const header = 'main >section:first-child >h2'; | ||
| const title = globalThis.document.querySelector(header).textContent; | ||
| const index = articles.findIndex(article => article.textContent === title); | ||
| const configure = (button, index) => { | ||
| button.setAttribute('data-href', articles[index]?.getAttribute('href')); | ||
| button.setAttribute('title', articles[index]?.textContent); | ||
| button.classList.add(index > -1 && index < articles.length ? 'show' : 'hide'); | ||
| }; | ||
| configure(container.children[0], index - 1); //previous article | ||
| configure(container.children[1], index + 1); //next article | ||
| container.classList.add('show'); | ||
| }, | ||
| start() { | ||
| console.log('Think Metric'); | ||
| console.log('🇺🇸 Americans for Metrication 🇺🇸'); | ||
| if (globalThis.location.href.includes('/article/')) | ||
| app.setupArticlePage(); | ||
| const checklistElem = globalThis.document.querySelector('ol.to-do-checklist'); | ||
| if (checklistElem) | ||
| app.restoreChecklist(checklistElem); | ||
| }, | ||
| }; | ||
|
|
||
| dna.dom.onReady(app.start); |