怎么用js取盒子里的子div 但是不包括孙子级别的div

Question

<div id="nav">     <div class="1">         <div></div>         <div></div>         <div></div>     </div>     <div class="2"></div>     <div class="3"></div>     <div class="4"></div> </div就是只取nav下面类为1,2,3,4的四个div

Answer 1

var oDivs = document.getElementById("nav").children;
console.log(oDivs)

打印出来的就是了

Answer 2

var parentObj=document.getElementById("nav");
var childNodes=parentObj.children;