Using Ternary Operator to Handle Three Different Conditions

Question

I'm using the ternary operator to handle importing data from SQL to Mongo for a variety of fields. For one particular field it's a little trickier than the others, because I want to handle three different conditions:

• 1 should port to true ,
• 0 should port to false ,
• and null should port to null .

This is what I'm trying:

  saved: data.saved && data.saved === 1 ? true : data.saved && data.saved === 0 ? false : null

Would this accomplish what I'm needing?

Answer 1

您可以直接检查null ，如果没有将数值转换为boolean。

value === null ? null : Boolean(value)

Answer 2

您可以将值强制为布尔值：

saved: (data === null) ? null : !!data