<!DOCTYPE html><html> ???<head> ???????<meta charset="UTF-8"> ???????<title></title> ???</head> ???<body> ???????<div id="one"> ???????????今天下雨 ???????</div> ???<table border="1" cellspacing="0" cellpadding="0"> ???????<!--<tr><th>Header</th></tr> ???????<tr><td>Data</td></tr>--> ???</table> ???<input type="text" name="two" id="two" value="269" /> ???????<ul> ???????<li></li> ???????<li></li> ???????<li></li> ???????<li></li> ???</ul> ???</body></html><script type="text/javascript">var tab = document.getElementsByTagName("table") ???var str = ""; ???for(var i = 0;i<4;i++){ ???????str = str + "<tr>" ???????for(var j = 0;j<4;j++){ ???????????str = str + "<td>嘿嘿</td>" ???????} ???????str = str + "</tr>" ???} ???tab[0].innerHTML = str ???????????var inpt = document.getElementById("two"); ???alert(inpt.value); ???????var three = document.getElementsByTagName("li"); ???console.log(three[0]); ???????var one = document.getElementById("one");</script>JS document
原文地址：https://www.cnblogs.com/hankai2735/p/8846789.html