Question: do you prefer dataviewjs or simple dataview dql query?
DataviewJS
```dataviewjs
dv.taskList(dv.pages('"yourfolder" and #yourtag').file.tasks
.where(t => !t.completed))
```
DQL
```dataview
TASK
FROM "yourfolder"
WHERE contains(file.tags, "#yourtag") AND !completed
```