I am looking for a way to do a conditional assignment of value to a key in an object. In my case i have an old data structure in my json file which is different then the new one so for example now the field is seller1FirstName and before it was seller1FName. What i need is a way to assign the value of this field to a var in my code. I know i could check if one exist and then assign it or if not use the other like this
if (data.seller1FirstName) {
let mySellerFirstName = data.seller1FirstName
} else {
let mySellerFirstName = data.seller1FName
}
i am hoping there is a cleaner and shorter way to do this
You could use a ternary 'if' operator to do the same thing in only one line:
let mySellerFirstName = data.seller1FirstName ? data.seller1FirstName : data.seller1FName;
You can use the optional chaining operator in addition to the nullish coalescing operator.
let data = {
seller1FName : 'value'
}
let newValue = data?.seller1FirstName ?? data.seller1FName;
console.log(newValue);