It then inserts the new value. • Concat () It creates a new array. It copies all items from the first array, then copies all items from the second array into the new one. • Slice () It creates a ...
Accessing Data • index: Use [0] to get the first item. • at (): A modern way to get items. You can use negative numbers like -1 to get items from the end. This is safer than standard bracket notation ...
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