```dataviewjs
// Show random definition
let definitionList = [];
let cardtitleList = [];
let fileList = [];

let query = dv.pages()
    .where(page => page.cardtitle)
    .where(page => page.cardtitle != "N/A");

for (q of query) {
    fileList.push(q.file.name);
    definitionList.push(q.definition);
    cardtitleList.push(q.cardtitle);
};

// o = once per day
// H = once per hour
// m = once per minute
// s = once per second
const rnd = DateTime.now().toFormat("o") % cardtitleList.length;

dv.span('[[' + fileList[rnd] + '|' + cardtitleList[rnd] + ']]' + '<br><br>'+ definitionList[rnd]);
```