javascript - jQuery添加和添加

Question

如何使用 jQuery 添加<thead>这个<tbody>？

问题是我的表有 1 或 2 行？

$('#myTable tr:has(th)').wrap('<thead></thead>');

---

<table id="myTable">

<tr><th>1</th><th>2</th><th>3</th><th>4</th></tr>
<tr><th>1</th><th>2</th><th>3</th><th>4</th></tr>

<tr><td>1</td><td>2</td><td>3</td><td>4</td></tr>
<tr><td>1</td><td>2</td><td>3</td><td>4</td></tr>
<tr><td>1</td><td>2</td><td>3</td><td>4</td></tr>
<tr><td>1</td><td>2</td><td>3</td><td>4</td></tr>
<tr><td>1</td><td>2</td><td>3</td><td>4</td></tr>  
</table>

Answer 1

您需要做的是删除行并将它们附加到 thead 元素

var myTable = jQuery("#myTable");
var thead = myTable.find("thead");
var thRows =  myTable.find("tr:has(th)");

if (thead.length===0){  //if there is no thead element, add one.
    thead = jQuery("<thead></thead>").appendTo(myTable);    
}

var copy = thRows.clone(true).appendTo("thead");
thRows.remove();

jsFiddle 示例 ​</p>

Answer 2

使用 wrapAll 而不是 wrap

$('#myTable tr:has(th)').wrapAll('<thead></thead>');​
$("#myTable thead").prependTo("#myTable")

Answer 3

function createTable(data) {
    var str = "";
    str += '<table><thead>';
    str += '<tr><td>Pos</td><td>Ref</td></tr></thead><tbody>';
    for (var item in data.recentList) {
        str += '<tr>';
        for (idata in data.recentList[item]) {
            str += '<td>' + data.recentList[item][idata] + '</td>';
        }
        str += '</tr>';
    }
    str += '</tbody></table>';
    $('body').append(str);
}

从数组创建表的工作版本