Javascript to-do list -2

•  diffference between element.childnodes and element.children :

                chindnodes will return every contained element in nodelist[]. it will even return comments and texts.

                children will return only html elements present in it in HTMLCollection[].

• forEach loop in JS:

    if we want to loop over every element in array.

    eg-  

const todos=todoList.childNodes;

  todos.forEach(function(todo){

  })

here,  todo is refered to each element in array todos.

• todo.classList.contains('completed'):    checks if element todo has a class 'completed'.
• todo.classList.toggle('completed')   :   toggle the class 'completed' over the element todo.

still need to work on local storage. will post it later.