获取所有子节点
<!DOCTYPE html> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>JS</title> </head> <body> <div id="box"> <button class="btn">按钮</button> <span id="span"> <a href="/go.html?url=#">百度一下</a> </span> <p>我是段落</p> </div> <script type="text/javascript"> window.onload = function() { var box = document.getElementById("box"); //获取第一个子节点 console.log(box.firstElementChild || box.firstChild); //获取最后一个子节点 console.log(box.lastElementChild || box.lastChild); // 获取所有子节点 var allNodeList = box.childNodes; console.log(allNodeList); var newList = []; for (var i = 0; i < allNodeList.length; i++) { var node = allNodeList[i]; if (node.nodeType === 1) { //判断类型 newList.push(node); } } console.log(newList); } </script> </body> </html> <!DOCTYPE html> <html> <head> <meta ht