Method 1: Individual Update Keys
The aforementioned bit of code depicts altering a single key value within an object; but, by just changing the key name within the obj1[“key”] call, you may change whatever value you desire.
Method 2: Update Keys With In or For Loop
The identical solution as the one before is demonstrated here, but with the key updating taking place inside the loop:
Method 3: Update Keys With Object.keys() and forEach()
The object.keys() function may be used to retrieve all of the object’s keys, after which you can use the forEach method to iterate through each key one at a time. You can provide the changes or updated values for each key in the object that will be altered during the iteration.
Here is an example of how this will work.
Method 4: Update Keys With Object.keys() And reduce() Function
The remainder of the keys will be reduced to a single value using the reduce () function, which will only return the accumulator’s most recent value.
This method differs from the others in that it produces a new object and is immutable.
For each modified value in the accumulator, this method produces a brand-new key-value object rather than overwriting the old one.
This way, as you can see, is a little more difficult, but it makes it simple to copy keys into a new object or to build an action without losing your original object.
Check out this page for further details on the reduce() functions.
Any program meant for production shouldn’t ever crash. The answer, however, does not lie in putting exception handlers everywhere. Catching exceptions is never a better choice than mitigating the potential scenarios triggering the problems.