remove everything inside an element document.getelementbyid code example

Example 1: Javascript remove all child elements

var myDiv = document.getElementById("myDivID");
    myDiv.innerHTML = "";//remove all child elements inside of myDiv

Example 2: Remove all child nodes of a list:

// Get the <ul> element with id="myList"
let list = document.getElementById("myList");

// As long as <ul> has a child node, remove it
while (list.hasChildNodes()) {  
  list.removeChild(list.firstChild);
}