The type 'NodeList' does not include the property 'forEach'

Recently, I incorporated ng2-dragula to enable Drag and Drop functionality in my Table.

  this.dragulaService.drop.subscribe(value => {     

  let questions_group = value[3] as HTMLTableRowElement        
  let SectionTwo:Array<string> = [];
  let QuestionId:Array<string> = [];
  let OrderNo:Array<number> = [];
  var list2 = questions_group.childNodes;      

  list2.forEach( 
    function(currentValue, currentIndex,listObj) { 

      if(currentIndex!=0){           
        let sectionName2 = currentValue.lastChild.textContent
        SectionTwo.push(sectionName2)
        QuestionId.push(currentValue.firstChild.textContent)
        OrderNo.push(currentIndex)

      }         
    },
    ''
  );   });

Bafflingly, a sudden error has surfaced indicating that "Property 'forEach' does not exist on type 'NodeList'." Despite working flawlessly previously without any changes made.

Answer №1

After including the "dom.iterable" property in the lib section of the tsconfig.json file, everything started functioning correctly.

Answer №2

Here's a different method:

  • Utilizing the Spread Operator:

    var allItems = [...questionSet.childNodes]; // Check out the syntax
    
    allItems.forEach(function(item, index, list) => {
       // Add your code here
    }) 
    

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