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Selection & Content
w3.getElement w3.getElements w3.getHttpObject w3.displayObject w3.includeHTML w3.hide w3.show w3.toggleShow
Filtering & Sorting
w3.filterHTML Filter table rows Filter list items w3.sortHTML Sort ascending Sort descending Multi-column filter Case-insensitive filter
HTTP & Data
w3.getHttpData Load JSON Render object data Render array data Handle empty data Handle HTTP failure Refresh remote data Template with placeholders
UI Patterns
Toggle navigation Show modal Hide modal Filter cards Sort product list Load reusable header Display selected object Progressive enhancement fallback
W3.js / HTTP & Data

Handle empty data

Learn Handle empty data in W3.js with a focused explanation, a topic-specific example, and a mastery check.

12 min read • Intermediate
w3js-021.html
html 
<script src="/vendor/w3.js"></script><div id="empty"></div><script>w3.getHttpObject("/api/alerts",d=>empty.textContent=d.length?`${d.length} alerts`:"No alerts")</script>
What to watch
Content source & attribution
Original Syntaxis Content · Original Syntaxis Content

Lesson quizzes

Handle empty data Mastery Check →
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