HTML怎么给tr改为可编辑
在HTML中,<tr>
标签用于定义表格的行,如果你想要让表格的某一行变为可编辑状态,可以使用JavaScript或者CSS来实现,本文将介绍如何使用JavaScript和CSS将<tr>
标签变为可编辑状态。
使用JavaScript实现
1、创建一个表格
<table border="1"> <tr> <td><input type="text" onblur="editRow(this)"></td> </tr> </table>
2、编写JavaScript函数
在上面的代码中,我们为每个单元格添加了一个<input>
标签,并为其设置了onblur
事件,当用户离开该单元格时,会触发editRow
函数。
function editRow(input) { var row = input.parentNode.parentNode; // 获取当前单元格所在的行 row.style.backgroundColor = "yellow"; // 将行的背景颜色设置为黄色,表示正在编辑 }
3、为表格添加键盘事件监听器
为了能够通过键盘进行编辑,我们需要为整个表格添加一个键盘事件监听器,当用户按下回车键时,会触发saveRow
函数,将修改后的值保存到服务器或本地存储中。
document.querySelector("table").addEventListener("keydown", function (event) { if (event.keyCode === 13) { // 如果按下的是回车键(keyCode为13) saveRow(); // 调用saveRow函数保存数据 } });
4、编写保存数据的函数
function saveRow() { var rows = document.querySelectorAll("table tr"); // 获取所有行 for (var i = 0; i < rows.length; i++) { // 遍历每一行 var cells = rows[i].getElementsByTagName("td"); // 获取当前行的所有单元格 for (var j = 0; j < cells.length; j++) { // 遍历每一个单元格 var cell = cells[j]; // 获取当前单元格的元素节点 var value = cell.firstChild.value; // 获取当前单元格的值 // 这里可以将数据保存到服务器或本地存储中,具体实现根据实际需求而定 } } }
使用CSS实现
1、为需要编辑的单元格添加类名
<table border="1"> <tr> <td><input type="text" class="editable"></td> </tr> </table>
2、为需要编辑的单元格添加样式
.editable::placeholder { /* Chrome, Firefox, Opera, Safari */ color: transparent; opacity: 1; /* IE */ filter:alpha(opacity=1); /* IE */ z-index:999; /* IE */} /* Standard syntax */::-webkit-input-placeholder { /* Chrome/Opera/Safari */ color: transparent; opacity: 1; /* Firefox */ filter:alpha(opacity=1); /* Internet Explorer/Edge */} ::-moz-placeholder { /* Firefox */ color: transparent; opacity: 1; /* Internet Explorer */} /* Microsoft Edge */:-ms-input-placeholder { /* Internet Explorer/Edge */ color: transparent; opacity: 1; /* Microsoft Edge */} ::-ms-input-placeholder { /* Internet Explorer/Edge */ color: transparent; opacity: 1; /* Microsoft Edge */} input::-webkit-input-placeholder, input::-moz-placeholder, input::-ms-input-placeholder, input:focus::-webkit-input-placeholder, input:focus::-moz-placeholder, input:focus::-ms-input-placeholder, input:focus::placeholder{color:transparent;opacity:1} input::placeholder{color:transparent;opacity:1} input::-webkit-input-placeholder:focus, input::-moz-placeholder:focus, input::-ms-input-placeholder:focus, input:focus::-webkit-input-placeholder:focus, input:focus::-moz-placeholder:focus, input:focus::-ms-input-placeholder:focus, input:focus::placeholder:focus{color:transparent;opacity:1} input::placeholder:focus{color:transparent;opacity:1} label{position:relative} label::after{content:attr(data-content);position:absolute;bottom:0;left:50%;transform:translateX(-50%);width:100%;padding:0;font-size:0.8em;font-weight:bold;color:777;pointer-events:none;z-index:1000;transition:all ease-in-out 0.3s} label span{display:inline-block;padding-left:5px} label span::before{content:'\20B9';margin-right:5px} label input~label{top:1px} label input~label::after{height:auto;padding:5px} label input~label::before{top:0;font-size:0.65em} label input~label span{padding-left:2px} label input~label span::before{top:0} label input~label span::after{top:3px} @media only screen and (max-width:600px){label span::before{font-size:0.7em}} @media only screen and (max-width:450px){label span::before{font-size:0.65em}} @media only screen and (max-width:360px){label span::before{font-size:0.6em}} @media only screen and (min-width:601px) and (max-width:900px){label span::before{font-size:0.75em}} @media only screen and (min-width:901px) and (max-width:1200px){label span::before{font-size:0.85em}} @media only screen and (min-width:1201px){label span::before{font-size:enter code here
em}} label[for='checkbox']:not(input):checked ~ label::after, label[for='checkbox']:not(input):checked + label::after{content:'';animation: none;transition: all ease-in-out 0.3s} label[for='checkbox']:not(input):checked + label span::before{color:ccc} label[for='checkbox']:not(input):checked + label span::after{color:ccc} label[for='checkbox']:not(input):checked + label span::after{font-size:9pt}@keyframes fadeOutLeftNoTransition {'from': {'opacity': 'unset', 'transform': 'translateX(0%)'}, to {'opacity': '0', 'transform': 'translateX(100%)'}}@keyframes fadeOutRightNoTransition {'from': {'opacity': 'unset', 'transform': 'translateX(0%)'}, to {'opacity': '0', 'transform': 'translateX(-100%)'}}@keyframes fadeInLeftNoTransition {'from': {'opacity': 'unset', 'transform': 'translateX(100%)'}, to {'opacity': '1', 'transform': 'translateX(0%)'}}@keyframes fadeInRightNoTransition {'from': {'opacity': 'unset', 'transform': 'translateX(0%)'}, to {'opacity': '1', 'transform': 'translateX(100%)'}}@keyframes fadeInDownNoTransition {'from': {'opacity': 'unset', 'transform': 'translateY(0%)'}, to {'opacity': '1', 'transform': 'translateY(100%)'}}@keyframes fadeInUpNoTransition {'from': {'opacity': 'unset', 'transform': 'translateY(100%)'}, to {'opacity': '1', 'transform': 'translateY(0%)'}}@keyframes fadeInNoTransition {'from': {'opacity': 'unset', 'transform': 'translateZ(0)'}, to {'opacity': '1', 'transform': 'translateZ(0)'}}@keyframes fadeOutNoTransition {'from': {'opacity': 'unset', 'transform': 'translateZ(0)'}, to {'opacity': '0', 'transform': 'translateZ(0)'}}@keyframes slideInDownNoTransition {'from': {'visibility': 'hidden', 'transform': 'translateY(-100%')'}, to {'visibility': visible, transform': 'translateY(0)'}}@keyframes slideInUpNoTransition {'from': {'visibility':
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