使用javascript来实现增加删除

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Untitled Document</title>
<link rel="stylesheet" type="text/css" href="ex_2_style/css.css" />
<script type="text/javascript">
    window.onload = function(){
        
        function aDelete(){
            //获取tr元素节点
            var trEle = this.parentNode.parentNode;
            //获取td元素节点
            var tdEles = trEle.getElementsByTagName("td");
            //获取每条记录中的name
            var nameText = tdEles[0].innerHTML;
            //弹出确认删除框  
            
            var flag = confirm("确定要删除【"+nameText+"】的信息吗？");
            if(flag){
            //删除tr元素节点
            trEle.parentNode.removeChild(trEle);
            }
            return false;
        }
        //删除操作
        var aEles = document.getElementsByTagName("a");
        for(var i = 0; i < aEles.length; i++){
            aEles[i].onclick = aDelete;
        }
        //添加操作
        //获取提交按钮
        var subBtn = document.getElementById("addEmpButton");
        subBtn.onclick = function(){
            //获取输入的name,email,salary
            var nameText = document.getElementById("empName").value;
            var emailText = document.getElementById("email").value;
            var salaryText = document.getElementById("salary").value;
            /* 
            <tr>
                <td>Tom</td>
                <td>[email protected]</td>
                <td>5000</td>
                <td><a href="deleteEmp?id=001">Delete</a></td>
            </tr>
            */
            //创建四个文本节点
            var nmText = document.createTextNode(nameText);
            var emText = document.createTextNode(emailText);
            var slText = document.createTextNode(salaryText);
            var dlText = document.createTextNode("Delete");
            //创建一个a元素节点
            var aEle = document.createElement("a");
            //给a元素节点添加超链接
            aEle.href = "#";
            aEle.onclick = aDelete;
            //创建四个td元素节点
            var nmTd = document.createElement("td");
            var emTd = document.createElement("td");
            var slTd = document.createElement("td");
            var dlTd = document.createElement("td");
            //组装<td>文本</td>
            nmTd.appendChild(nmText);
            emTd.appendChild(emText);
            slTd.appendChild(slText);
            aEle.appendChild(dlText);
            dlTd.appendChild(aEle);
            //创建tr元素节点
            var trEle = document.createElement("tr");
            //将组装好的td节点添加到tr中
            trEle.appendChild(nmTd);
            trEle.appendChild(emTd);
            trEle.appendChild(slTd);
            trEle.appendChild(dlTd);
            //获取table元素节点
            var tableEle = document.getElementById("employeeTable");
            //将tr节点添加到table中
            tableEle.appendChild(trEle);
        };
        
    };
    
</script>
</head>
<body>

    <table id="employeeTable">
        <tr>
            <th>Name</th>
            <th>Email</th>
            <th>Salary</th>
            <th>&nbsp;</th>
        </tr>
        <tr>
            <td>Tom</td>
            <td>[email protected]</td>
            <td>5000</td>
            <td><a href="deleteEmp?id=001">Delete</a></td>
        </tr>
        <tr>
            <td>Jerry</td>
            <td>[email protected]</td>
            <td>8000</td>
            <td><a href="deleteEmp?id=002">Delete</a></td>
        </tr>
        <tr>
            <td>Bob</td>
            <td>[email protected]</td>
            <td>10000</td>
            <td><a href="deleteEmp?id=003">Delete</a></td>
        </tr>
    </table>

    <div id="formDiv">
    
        <h4>添加新员工</h4>

        <table>
            <tr>
                <td class="word">name: </td>
                <td class="inp">
                    <input type="text" name="empName" id="empName" />
                </td>
            </tr>
            <tr>
                <td class="word">email: </td>
                <td class="inp">
                    <input type="text" name="email" id="email" />
                </td>
            </tr>
            <tr>
                <td class="word">salary: </td>
                <td class="inp">
                    <input type="text" name="salary" id="salary" />
                </td>
            </tr>
            <tr>
                <td colspan="2" align="center">
                    <button id="addEmpButton" value="abc">
                        Submit
                    </button>
                </td>
            </tr>
        </table>

    </div>

</body>
</html>
使用javascript来实现增加删除

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