How to delete child nodes created by javascript_javascript skills

The example in this article describes the method of deleting child nodes created by javascript. Share it with everyone for your reference. The details are as follows:

I don’t know how to delete the node created by js. . . It took a lot of time

for(var i = 0; i < jsonList.length; i++ ){
  var li_button = document.createElement("li");
  li_button.className = "button";
  var li_button_a = document.createElement("a");
  li_button_a.id = jsonList[i]._id;
  var li_button_text = document.createTextNode(jsonList[i].projectName);
  li_button_a.appendChild(li_button_text);
  li_button.appendChild(li_button_a);  
  ul_level2.appendChild(li_button);
}

Later I found out that the node is actually

ul_level2.innerHTML = '';InnerHTML ='' content, as long as it is set to empty, the child nodes can be cleared.

I hope this article will be helpful to everyone’s JavaScript programming design.