Say I have an object with nested keys:
const person = {
firstName: "John",
lastName : "Doe",
id : 5566,
nicknames: ["Johnny", "Jonathan"],
birthDate: "", // blank string.
};
How do I programmatically change object keys so all values that are blank ("") change to null? Like this:
const person = {
firstName: "John",
lastName : "Doe",
id : 5566,
nicknames: ["Johnny", "Jonathan"],
birthDate: null, // null instead of blank string.
};
I would prefer a solution without external modules/NPM packages.
You can iterate through each property and check whether the value is a blank string, and if so, set it to null:
const person = {
firstName: "John",
lastName : "Doe",
id : 5566,
nicknames: ["Johnny", "Jonathan"],
birthDate: "", // blank string.
};
Object.keys(person).forEach(e => person[e] = person[e] == "" ? null : person[e])
console.log(person)