3 ms·
if you use ES2015: arr = [ ...arr.slice(0, 2), 'New Content', ...arr.slice(3) ]
by gr__or 9y ago
if you use ES2015:
arr = [
...arr.slice(0, 2),
'New Content',
...arr.slice(3)
]
- roselan 9y agoIn my eyes this slice of code is even worse than the array map one, where there is 2.5 pieces of logic (map, if, and 2 return that makes for the .5). In the version you have 2 spread operators, an array construct and 3 hardcoded ints. I might not use the correct academic terms, and I might not be yet fully accustomed to es2015, but this way of writing stuff always make me pause and double check the code.
- mwigdahl 9y agoIn ES2017 this gets substantially better: const arr2 = Object.values({...arr, 3: 'New Content'});