1 const html=document.querySelector(‘html‘) 2 const htmlChild=html.children; 3 let obj={}; 4 function fn(children){ 5 for(let i of children){ 6 if(obj.hasOwnProperty(i.tagName)){ 7 obj[i.tagName]=obj[i.tagName]+1 8 }else{ 9 obj[i.tagName]=1; 10 } 11 const child=i.children; 12 if(child.length!==0){ 13 fn(child) 14 } 15 } 16 } 17 fn(htmlChild) 18 let tag=Object.entries(obj).sort((a,b)=>{ 19 return b[1]-a[1] 20 }) 21 console.log(tag)