Creating a null array of a specific size can easily be accomplished in Typescript

When I use the splice method to add elements to an array at a specified index, I find myself creating a null array first in order to achieve this. If I use an empty array instead, the elements do not get pushed to the specific instance that I intended. Currently, my workaround involves creating an empty array and pushing null values into it. I am curious if there is a different approach that can accomplish the same result.

This is how I'm currently handling it:

arr:any[];
for(let i=0;i<userDefinedLength;i++)
{
    arr.push(null);
}

Answer №1

To create an array with a user-defined length, you can utilize the code

arr = new Array(userDefinedLength).fill(null);

Answer №2

Implement the fill method:

myArray: any[] = new Array(customLength).fill(null);

Avoid using null[] unless the array is simply being used as a temporary solution:

myArray: null[] = new Array(customLength).fill(null);

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