My array inputs will not stay when I push a value (Javascript)

Question

Good day everyone, I have some troubles with pushing a value into an empty array. Currently, I want to push a value (subLayerLength); there is only one value that meets this condition of ( > 0) that I want to push into the empty array (subLayersArray) and subsequently use the value that is ( > 0) in the destroyLayerTrNode function removedLayerNode2. However, whenever I run this the array keeps resetting to an empty array. Can anyone tell me how to fix this? Thank you :)

var subLayerLength = layerInfo.newSubLayers.length

  let subLayersArray = []
  if(subLayerLength > 0){
   subLayersArray.push(subLayerLength)}

  this.destroyLayerTrNode(layerInfo, subLayersArray)


destroyLayerTrNode: function(layerInfo, subLayersArray) {
  var lc = layerInfo.layerObject.url.toLowerCase();
  var parentLayerId= layerInfo.id
  var layerId = parentLayerId.split("_")[0]
  var newSubId= (parseInt(layerInfo.subId))    

  if (lc.indexOf("abc") > 0 && lc.includes("def")){
    
      for(let i = 1; i< newSubId; i++ ){
        var removedLayerNode = query("[class~='layer-tr-node-" + layerId + "_" + i + "']", this.domNode)[0];
        var removedLayerContentNode = query("[layercontenttrnodeid='" + layerId + "_" + i + "']", this.domNode)[0];
        var removedLayerNode2 = query("[class~='layer-tr-node-" + layerId + "_" + **subLayersArray[0]** + "']", this.domNode)[0];

        if(removedLayerNode) {
            domConstruct.destroy(removedLayerNode)
            domConstruct.destroy(removedLayerNode2)
            if(removedLayerContentNode) {
              domConstruct.destroy(removedLayerContentNode);
              console.log("destroyed")}
          }
      }
    }
},

Answer 1

The Problem does not seem to be in your code. Pushing the value into the array works fine.

var subLayerLength = 33;

let subLayersArray = [];
if(subLayerLength > 0){
    subLayersArray.push(subLayerLength);
}

console.log(subLayersArray);

Your problem seems to be that you don´t use "subLayersArray" in your function "destroyLayerTrNode". You only access an array with the name "subArrayLayer[0]" which is not defined anywhere. Just renaming it should do the trick

var removedLayerNode2 = query("[class~='layer-tr-node-" + layerId + "_" + **subLayersArray[0]** + "']", this.domNode)[0];