Dom动态地增加和删除表格
function saveInfo(){var tb = document.getElementById("tb");var mytr = document.createElement("tr");mytr.align = "center";var mytd1 = document.createElement("td");var mytd2 = document.createElement("td");var mytd3 = document.createElement("td");var name = document.createTextNode(document.getElementById("username").value);var pwd = document.createTextNode(document.getElementById("userpwd").value);var mya = document.createElement("a");mya.href = "#";mya.onclick = delMe;var del = document.createTextNode("删除");mya.appendChild(del);mytd1.appendChild(name);mytd2.appendChild(pwd);mytd3.appendChild(mya);mytr.appendChild(mytd1);mytr.appendChild(mytd2);mytr.appendChild(mytd3);tb.appendChild(mytr);}function delMe(){var mytr = this.parentNode.parentNode;if(confirm("您确定要删除"+mytr.firstChild.firstChild.nodeValue+"吗？"))//获取表格中的值{//confirm("您确定要删除"+mytr.firstChild.firstChild+"吗？");mytr.parentNode.removeChild(mytr);}}