Alternative of SLICE method.

[Tech-Engineer]

function sliceFunc(origArray, a, b)
{
if(a < 0)
{
a = origArray.length + a;
}
else if(a === undefined)
{
a = 0;
}

if((b<a && b > 0) || b == a)
{
return;
}
else if(b===undefined || b>origArray.length)
{
b=origArray.length;
}
else if(b < 0)
{
b = origArray.length + b;
if(b === a || b < a)
{
return;
}
}

var slicedArray=[];
for(i=a;i<b;i++){
slicedArray.push(origArray[i]);
}
return slicedArray;
}

On frontend we can perform slicing on an array using below syntax:

Present usage of slice method
var numArr = [1, 2, 3, 4, 5];
var subArr = numArr.slice(2, 4);

My proposed way of performing slicing
var numArr = [1, 2, 3, 4, 5];
var subArr = numArr[2...4]; //instead of defining the start and end index by using slice method we can directly define it inside the square bracket.

In my proposed code first number inside square bracket is starting index and second number is end index.

[ljharb]

Please see https://github.com/tc39/ecma262/blob/master/CONTRIBUTING.md#feature-requests - this repo is not for language feature requests.

[ljharb]

Please see https://github.com/tc39/ecma262/blob/master/CONTRIBUTING.md#feature-requests - this repo is not for language feature requests.