前端
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<!DOCTYPE html>
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<html>
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<head>
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<meta charset="utf-8" />
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<meta name="author" content="flykhan" />
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<meta name="keywords" content="c c++ 物联网" />
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<title>DOM操作2</title>
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<style>
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body {
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padding: 10px;
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}
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.action {
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display: inline-block;
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width: 30px;
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height: 30px;
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text-align: center;
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line-height: 30px;
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border: 1px solid lightgray;
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border-radius: 50%;
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cursor: pointer;
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user-select: none;
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}
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.action:hover {
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background-color: lightgray;
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}
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.action:active {
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background-color: lightskyblue;
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}
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.warning {
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background-color: red;
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color: white;
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}
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.success {
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background-color: green;
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color: white;
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}
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.xe_group {
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display: flex; /* 弹性布局 */
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flex-direction: row; /* 水平方向排列 */
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justify-content: center; /* 水平方向居中 */
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}
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form {
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margin: 10px 0;
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}
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input[name] {
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outline: none;
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border: 1px solid lightgray;
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padding: 5px;
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}
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</style>
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</head>
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<body>
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<form onsubmit="return addData(this);">
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<input type="hidden" name="uid" value="0" />
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<input name="username" />
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<input name="phone" />
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<button type="submit">提交</button>
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</form>
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<table border="1px" cellspacing="0" cellpadding="10px">
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<thead>
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<th>ID</th>
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<th width="300px">Name</th>
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<th>Phone</th>
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<th width="300px">Action</th>
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</thead>
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<tbody>
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<tr>
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<td>1</td>
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<td>flykhan</td>
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<td>13536480678</td>
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<td class="xe_group">
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<b class="action warning">X</b>
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<b class="action success">E</b>
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</td>
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</tr>
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<tr>
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<td>2</td>
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<td>flykhan</td>
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<td>13536480678</td>
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<td class="xe_group">
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<b class="action warning">X</b>
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<b class="action success">E</b>
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</td>
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</tr>
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<tr>
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<td>3</td>
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<td>flykhan</td>
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<td>13536480678</td>
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<td class="xe_group">
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<b class="action warning">X</b>
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<b class="action success">E</b>
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</td>
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</tr>
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</tbody>
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</table>
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<script>
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var max_id = 4;
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function delAction() {
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let ds = document.getElementsByClassName("warning");
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for (let i = 0; i < ds.length; i++) {
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let bElement = ds[i];
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bElement.addEventListener("click", (event) => {
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let b = event.target;
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let tr = b.parentElement.parentElement;
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tr.remove();
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});
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}
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}
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function editAction() {
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let ds = document.getElementsByClassName("success");
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for (let i = 0; i < ds.length; i++) {
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let bElement = ds[i];
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bElement.addEventListener("click", (event) => {
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let b = event.target;
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let tr = b.parentElement.parentElement;
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let tds = tr.children; // 获取 tr 行的所有子标签对象
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let form = document.forms[0]; // 获取当前页面的第一个表单
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form.uid.value = tds[0].innerText;
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form.username.value = tds[1].innerText;
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form.phone.value = tds[2].innerText;
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});
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}
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}
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delAction();
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editAction();
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function addData(form) {
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let id_ = form.uid.value;
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let name = form.username.value;
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let phone = form.phone.value;
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console.log(id_);
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if (id_ === "0") {
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// 将数据添加到 table 中
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let table = document.getElementsByTagName("table")[0];
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// 创建一个新的 tr 标签
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let tr = document.createElement("tr");
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// 创建一个新的 td 标签
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let td1 = document.createElement("td");
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td1.innerText = max_id;
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let td2 = document.createElement("td");
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td2.innerText = name;
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let td3 = document.createElement("td");
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td3.innerText = phone;
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let td4 = document.createElement("td");
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td4.className = "xe_group";
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let b1 = document.createElement("b");
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b1.className = "action warning";
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b1.innerText = "X";
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let b2 = document.createElement("b");
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b2.className = "action success";
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b2.innerText = "E";
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// 将 td1, td2, td3, td4, b1, b2 添加到 tr 中
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tr.append(td1);
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tr.append(td2);
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tr.append(td3);
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tr.append(td4);
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td4.append(b1);
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td4.append(b2);
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// 将 tr 添加到 table 中
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table.append(tr);
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max_id++;
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delAction(); // 添加方法监听
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editAction();
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} else {
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console.log("---modify---");
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let trs = document.getElementsByTagName("tr");
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for (let i = 0; i < trs.length; i++) {
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if (trs[i].children[0].innerText == id_) {
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console.log(trs[i]);
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trs[i].children[1].innerText = name;
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trs[i].children[2].innerText = phone;
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break;
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}
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}
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}
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form.uid.value = "0";
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form.username.value = "";
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form.phone.value = "";
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return false; // 阻止表单的默认提交行为, 不会向服务器提交数据， 只是前端的数据处理
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}
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</script>
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</body>
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</html>
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