Editing Array splice vs. Object string key delete vs. Object int key delete vs. Array delete

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Code snippets to compare

Test 1

Title

Async (check if this is an asynchronous test)

Code

for(var i = 0; i < count; i += deleteInc)
{
    someArr.splice(i, 1);
}

Test 2

Title

Async (check if this is an asynchronous test)

Code

for(var i = 0; i < count; i += deleteInc)
{
    delete someObj['a' + i];
}

Test 3

Title

Async (check if this is an asynchronous test)

Code

for(var i = 0; i < count; i += deleteInc)
{
    delete someObjWithIntegerKeys[i];
}

Test 4

Title

Async (check if this is an asynchronous test)

Code

for(var i = 0; i < count; i += deleteInc)
{
    delete someArr[i];
}