完整HTML代码
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| <!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>在第一行前面插入新行</title>
<script>
count = 0;
function insertRowBeforFirst(tableID) {
var table = document.getElementById(tableID);
// 在第一行前面插入新行
var row = table.insertRow(0);
// 给新行插入第一个单元格
var cell1 = row.insertCell(0);
// 给单元格填写内容
cell1.innerHTML = "New_" + count++;
// 给新行插入第二个单元格
var cell2 = row.insertCell(1);
cell2.innerHTML = "New_" + count++;
}
</script>
</head>
<body>
<h2>在表格的第一行前面插入新行</h2>
<table id="myTable" border="1">
<tr>
<td>cell 1</td>
<td>cell 2</td>
</tr>
<tr>
<td>cell 3</td>
<td>cell 4</td>
</tr>
</table>
<br>
<button type="button" onclick="insertRowBeforFirst('myTable')">插入新行</button>
</body>
</html>
|
详细代码
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| count = 0;
function insertRowBeforFirst(tableID) {
var table = document.getElementById(tableID);
var row = table.insertRow(0);
var cell1 = row.insertCell(0);
cell1.innerHTML = "New_" + count++;
var cell2 = row.insertCell(1);
cell2.innerHTML = "New_" + count++;
}
|