Here is a snippet of code I am currently working with:
constructor(data) {
this.date = data.date && new Date(data.date) || undefined
}
I'm wondering if it is necessary or considered good practice to include || undefined. If the value of data.date is empty, will this expression return null? Am I interpreting this correctly?
If the date.date field ends up empty, will this expression give back null? Is that correct?
Not quite.
If the value of data.date is considered falsy, it will take on the value of data.date. This could be 0, null, "", false, or another similar value.
Setting it explicitly to undefined can provide consistency, which may be crucial for subsequent code that checks the value.
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