javascript - <td>' + result[dateNow]?result[dateNow]:'无课'+ '</td>'

Question

Can I write my ternary expression like this? It’s useless if I write it
result is the fetched data, I want to append this to html
I want to judge whether it is empty, for If empty, it will display "No Class"

Answer 1

If the content of result[dateNow] is empty, according to your expression, it will not die in the end. "No class" should return empty
Unless result[dateNow] returns undefined, your expression can display "No class" Bar

Answer 2

Initially, there seems to be no problem. Please help to complete the code involved in the problem, thank you.