I'm delving into assignment destructuring in my MongoDB/Node backend to handle post-processing. I am seeking clarity on how this feature operates, especially when dealing with arrays of multiple elements and nested arrays. Can I specify the element I want to target in such scenarios?
Consider this sample code:
services: [
,
{
history: [...preSaveData]
}
]
} = preSaveDocObj;
Does the "," in "services" default to accessing the first element in the array as per the above code? Is my assumption correct?
If I have a data structure like the one below and intend to pinpoint the "services" element where "service" is "typeTwo," how would I go about it?:
{
_id: 4d39fe8b23dac43194a7f571,
name: {
first: "Jane",
last: "Smith"
}
services: [
{
service: "typeOne",
history: [
{ _id: 121,
completed: true,
title: "rookie"
},
{ _id: 122,
completed: false,
title: "novice"
}
]
},
{
service: "typeTwo",
history: [
{ _id: 135,
completed: true,
title: "rookie"
},
{ _id: 136,
completed: false,
title: "novice"
}
]
}
]
}
How can I modify the following code snippet to specifically target the "services" array where "service" is "typeTwo"?
services: [
,
{
history: [...preSaveData]
}
]
} = preSaveDocObj;