我需要在<tr>中获取文字。这是我的HTML代码：
<table class="table" style="" id="tabella_username_aggiunti">
<thead>
<tr>
<th>Username</th>
<th>Cancella</th>
</tr>
</thead>
<tbody id="tbody_aggiungi_utente"><tr id="aggiungiprova"><td>prova</td><td><button id="eliminaprova" type="button" class="btn btn-danger btn-sm"><i class="fa fa-times" aria-hidden="true"></i></button></td></tr></tbody>
</table>
我需要提取<td>中的第一个<tr>，即＆＃34; prova＆＃34;在这个例子中，我使用这个jquery代码：
$('#tbody_aggiungi_utente').children('tr').each(function(i) {
console.log("TABELLA " + JSON.stringify(i)+" Tabella "+JSON.stringify($(this)));
//array_user.push($(this).attr('id').replace('aggiungi', ''));
});
但它不起作用，因为它打印了我TABELLA 0 Tabella {"0":{},"context":{},"length":1}
任何人都可以帮助我？
答案 0 :(得分：1)
$('#tbody_aggiungi_utente').children('tr').each(function(i) {
console.log("TABELLA " + JSON.stringify(i)+" Tabella "+$(this).first().text());
//array_user.push($(this).attr('id').replace('aggiungi', ''));
});<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<table class="table" style="" id="tabella_username_aggiunti">
<thead>
<tr>
<th>Username</th>
<th>Cancella</th>
</tr>
</thead>
<tbody id="tbody_aggiungi_utente">
<tr id="aggiungiprova"><td>prova</td><td><button id="eliminaprova" type="button" class="btn btn-danger btn-sm"><i class="fa fa-times" aria-hidden="true"></i></button></td></tr>
</tbody>
</table>
答案 1 :(得分：1)
使用children。
$(this).children('td:eq(0)').html());
$('#tbody_aggiungi_utente > tr').each(function(i) {
console.log("TABELLA " + JSON.stringify(i)+
" Tabella "+JSON.stringify($(this).children('td:eq(0)').html()));
});<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<table class="table" style="" id="tabella_username_aggiunti">
<thead>
<tr>
<th>Username</th>
<th>Cancella</th>
</tr>
</thead>
<tbody id="tbody_aggiungi_utente">
<tr id="aggiungiprova"><td>prova</td><td><button id="eliminaprova" type="button" class="btn btn-danger btn-sm"><i class="fa fa-times" aria-hidden="true"></i></button></td></tr>
<tr id="aggiungiprova1"><td>prova1</td><td><button id="eliminaprova" type="button" class="btn btn-danger btn-sm"><i class="fa fa-times" aria-hidden="true"></i></button></td></tr>
</tbody>
</table>
答案 2 :(得分：1)
您应该使用更好的选择器而不是children。然后，您需要选择td内的each。
$('#tbody_aggiungi_utente tr').each(function(i) {
var firstTd = $("td:eq(0)", this);
console.log("TABELLA " + JSON.stringify(i) + " Tabella " + JSON.stringify(firstTd.text()));
});<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<table class="table" style="" id="tabella_username_aggiunti">
<thead>
<tr>
<th>Username</th>
<th>Cancella</th>
</tr>
</thead>
<tbody id="tbody_aggiungi_utente">
<tr id="aggiungiprova">
<td>prova</td>
<td>
<button id="eliminaprova" type="button" class="btn btn-danger btn-sm"><i class="fa fa-times" aria-hidden="true"></i>
</button>
</td>
</tr>
</tbody>
</table>
或者直接循环td's：
$('#tbody_aggiungi_utente tr td:first-of-type').each(function(i) {
console.log("TABELLA " + JSON.stringify(i) + " Tabella " + JSON.stringify($(this).text()));
});<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<table class="table" style="" id="tabella_username_aggiunti">
<thead>
<tr>
<th>Username</th>
<th>Cancella</th>
</tr>
</thead>
<tbody id="tbody_aggiungi_utente">
<tr id="aggiungiprova">
<td>prova</td>
<td>
<button id="eliminaprova" type="button" class="btn btn-danger btn-sm"><i class="fa fa-times" aria-hidden="true"></i>
</button>
</td>
</tr>
<tr id="aggiungiprova">
<td>prova 2</td>
<td>
<button id="eliminaprova" type="button" class="btn btn-danger btn-sm"><i class="fa fa-times" aria-hidden="true"></i>
</button>
</td>
</tr>
</tbody>
</table>
答案 3 :(得分：1)
将each(function(i)替换为each(function(i,v)，然后console.log( $(v).text().trim());
输出将是'prova'
$('#tbody_aggiungi_utente').children('tr').each(function(i,v) {
console.log( $(v).text().trim());
});<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js"></script>
<table class="table" style="" id="tabella_username_aggiunti">
<thead>
<tr>
<th>Username</th>
<th>Cancella</th>
</tr>
</thead>
<tbody id="tbody_aggiungi_utente">
<tr id="aggiungiprova">
<td>prova</td>
<td>
<button id="eliminaprova" type="button" class="btn btn-danger btn-sm">
<i class="fa fa-times" aria-hidden="true"></i></button>
</td>
</tr>
</tbody>
</table>
答案 4 :(得分：0)
看看CSS Selectors。 jQuery可以使用相同的方法选择元素。
console.log(jQuery("#aggiungiprova td:first-child"));<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<table class="table" style="" id="tabella_username_aggiunti">
<thead>
<tr>
<th>Username</th>
<th>Cancella</th>
</tr>
</thead>
<tbody id="tbody_aggiungi_utente">
<tr id="aggiungiprova">
<td>prova</td>
<td>
<button id="eliminaprova" type="button" class="btn btn-danger btn-sm"><i class="fa fa-times" aria-hidden="true"></i>
</button>
</td>
</tr>
</tbody>
</table>
答案 5 :(得分：0)
这应该有用......
a = $('#tabella_username_aggiunti tr th')
console.log(a.text())
//or
a.each(function(a, el) {
console.log($(el).text())
})<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<table class="table" style="" id="tabella_username_aggiunti">
<thead>
<tr>
<th>Username</th>
<th>Cancella</th>
</tr>
</thead>
<tbody id="tbody_aggiungi_utente">
<tr id="aggiungiprova">
<td>prova</td>
<td>
<button id="eliminaprova" type="button" class="btn btn-danger btn-sm"><i class="fa fa-times" aria-hidden="true"></i>
</button>
</td>
</tr>
</tbody>
</table>
答案 6 :(得分：0)
$("#aggiungiprova td").first().text();
给出名为“aggiungiprova”的tr中第一个td的内容。
如果您需要获取整个列表中的所有名称，那么：
var names = [];
$("#tabella_username_aggiunti tr").each(function(){
names.push( $("td",this).first().text());
});
// names is now an array of all names
或者您将所有名称TD命名为[sic]并对其进行迭代，以便更容易阅读代码并加快执行速度：
<table>
<tr><td class="name-cell">My Name</td><td>other things</td></tr>
<tr><td class="name-cell">My Name</td><td>other things</td></tr>
</table>
JS：
$('.name-cell').each(function(){
// $(this).text()
});