<!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <title></title> </head> <body> <div id="1"> </div> </body> </html> <script type="text/javascript"> var b = document.getElementById(1) var str = "" for(var i = 0;i<1;i++){ str = str +"<ul>" for(var j = 0;j<5;j++){ str = str +"<li>"+(j+1)+"</li>" } str = str+"</ul>" } b.innerHTML = str </script>
原文：https://www.cnblogs.com/hankai2735/p/8846767.html