使用JavaScript选择ChildrenHTML元素

它实际上getElementsByTagName......
但你可以使用.querySelectorAll():

let list = document.querySelectorAll('nav li')

例:

let list  = document.querySelectorAll('nav li');
let list2 = document.querySelector('section ul'); // Use rather some ID man 

Array.from(list).forEach( (el) => list2.append(el.cloneNode(true)) );

section {
  background: #eee;
}

  

    
Previous
    
Next
  

let list = document.querySelectorAll('nav li')

let list  = document.querySelectorAll('nav li');
let list2 = document.querySelector('section ul'); // Use rather some ID man 

Array.from(list).forEach( (el) => list2.append(el.cloneNode(true)) );

section {
  background: #eee;
}

  

    
Previous
    
Next