dmikester1•3y ago

dmikester1 – 22-28 Jan 13

I have an array of objects. Each object has many fields, but I want to update the linePosition field in all of the objects. I simply want to decrement it by one. Would map be my best bet here?

3 Replies

dmikester1OP•3y ago

If it matters, this array is a React state array.

ScriptyChris•3y ago

You can simple do a loop

for (const object of array) {
  object.property_to_update = 'new value';
}

for (const object of array) {
  object.property_to_update = 'new value';
}

Oh, in this case use functional update with .map() to avoid state mutation

setState(prev => prev.map((obj) => ({
  ...obj,
  property_to_update: 'new value'
})));

setState(prev => prev.map((obj) => ({
  ...obj,
  property_to_update: 'new value'
})));

reactibot•3y ago

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dmikester1 – 22-28 Jan 13

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