jQuery - 隐藏<td>最后一个孩子<table>

Question

如果爱好没有价值(空(，我想隐藏。但如果爱好有价值还是显示出来的。如何调节？我尝试使用jQuery。

$("tr:last-child td:last-child").css("font-weight","bold")
if($("tr:last-child td:last-child").length < 1){
	$("tr:last-child").hide()
}

table{
border: 1px solid blue;
padding: 4px 8px;
margin:4px 0
}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<table>
<tr>
<td>Name</td>
<td>John</td>
</tr>
<tr>
<td>Hobby</td>
<td>Sleeping</td>
</tr>
</table>
<table>
<tr>
<td>Name</td>
<td>Doe</td>
</tr>
<tr>
<td>Hobby</td>
<td></td>
</tr>
</table>

Answer 1

如果td的 .text(( 为空，则可以隐藏 .parent((tr。

$("tr:last-child td:last-child").each(function(index, td) {
if($(td).text() === ""){
$(td).parent().hide();
}
});

table {
border: 1px solid blue;
padding: 4px 8px;
margin:4px 0
}
tr:last-child td:last-child {
font-weight: bold;
}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<table>
<tr>
<td>Name</td>
<td>John</td>
</tr>
<tr>
<td>Hobby</td>
<td>Sleeping</td>
</tr>
</table>
<table>
<tr>
<td>Name</td>
<td>Doe</td>
</tr>
<tr>
<td>Hobby</td>
<td></td>
</tr>
</table>

Answer 2

你需要使用text()来获取td的文本

$("tr:last-child td:last-child").each(function(index,element){
$(element).css("font-weight","bold");
});
$("tr:last-child td:last-child").each(function(index,element){
if($.trim($(element).text()).length == 0){
$(element).parent().hide();
}
});

table{
border: 1px solid blue;
padding: 4px 8px;
margin:4px 0
}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<table>
<tr>
<td>Name</td>
<td>John</td>
</tr>
<tr>
<td>Hobby</td>
<td>Sleeping</td>
</tr>
</table>
<table>
<tr>
<td>Name</td>
<td>Doe</td>
</tr>
<tr>
<td>Hobby</td>
<td></td>
</tr>
</table>

Answer 3

更改以下内容：

if($("tr:last-child td:last-child").length < 1){
$("tr:last-child").hide()
}

自：

if($("tr:last-child td:last-child").text().length < 1){
$("tr:last-child").hide()
}