for loop to multiply index 0 with 1, index 1 with 2, index 2 with 3

how could i generate a loop that iterates through a array, and its just multiplying the next index?

example:

array= [0,1,2,3,4,5]

0x1
1x2
2x3
3x4
4x5 

i know that i need to have a nested loop, but I cannot find the solution.

  for (let i = 0; i < Positions.length; i++) {
    for (let j = 1; j < Positions.length; j++) {
    
      
      console.log(Positions[i].number * Positions[j].number  )  
 
    }
    
  }

Answer

The problem with your current implementation is that you are looping over every index twice: once for the outer loop and once for the inner loop. To get the item at the index after i you can simply write Positions[i + 1].number.

You should loop over every index once like this:

for(let i = 0; i < Positions.length - 1; i++) {
    console.log(Positions[i] * Positions[i + 1])
}