Why is splice() not working in the web editor?

[swenzel]

I may be missing something very simple here. I am trying to use splice to add 0 onto the front of this array. However, the result of both console logs are [0,1,2,3,4,5]. It’s like it is retroactively adding the zero to the first console log. I try this exact code on other javascript editors and it works as intended. Any help would be great.

function setup() {
  let A = [1,2,3,4,5]
  console.log(A)
  A.splice(0,0,0)
  console.log(A)
}

[swenzel]

function setup() {
  createCanvas(400, 400);
  let A = [2,3,4,5,6]
  console.log(A.length)
  console.log(A)
  console.log(A.length)
  if(A.length == 5){
    A.push(1) 
    console.log(A)
  }
}

More confusion on my part. Screenshot of console:

[GoToLoop]

Strange access to data class

Both outputs in my browser got the expected values: [1, 2, 3] & [3, 1, 2]. But b/c you’re printing an array, if a browser by chance delays the actual printing to the console, it’s possible that you’ll see the array’s most current values for all outputs. As a workaround you can extract the arrays values when printing it using the spread ... syntax: console.log(...myTest.groupe);

[GoToLoop]

@swenzel

A.splice(0,0,0)

BtW, we can use method unshift() in order to append at the front (head) of an array: A.unshift(0)

Array.prototype.unshift() - JavaScript | MDN