Javascript 隐藏表格行
如果某个标记中没有内容,我将尝试隐藏一个表行Javascript 隐藏表格行,javascript,jquery,html,html-table,Javascript,Jquery,Html,Html Table,如果某个标记中没有内容,我将尝试隐藏一个表行 <script src="http://ajax.googleapis.com/ajax/libs/jquery/1.11.2/jquery.min.js"></script> <body onload="myFunction()"> <script> function myFunction() { if($(this).find('SampleNumber1'
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.11.2/jquery.min.js"></script>
<body onload="myFunction()">
<script>
function myFunction() {
if($(this).find('SampleNumber1').length === 0 && $(this).find('TypeofTest1').length === 0 && $(this).find('PumpNumber1').length === 0 && $(this).find('CowlNumber1').length === 0 && $(this).find('SampleLocation1').length === 0 && $(this).find('SampleStart1').length === 0 && $(this).find('SampleFinish1').length === 0 && $(this).find('SampleDuration1').length === 0 && $(this).find('FlowRateStart1').length === 0 && $(this).find('FlowRateFinish1').length === 0 && $(this).find('FlowRateMinMean1').length === 0 && $(this).find('SampleVolumeLitres1').length === 0 && $(this).find('FibresCount1').length === 0 && $(this).find('GraticuleFields1').length === 0 && $(this).find('Limit1').length === 0 && $(this).find('CalculatedResult1').length === 0 && $(this).find('ReportedResult1').length === 0) {
document.getElementById('Sample1').style.display = 'none';
} else {
document.getElementById('Sample1').style.display = 'block';
};
}
</script>
<table style= width: 1300px;" border="1" cellpadding="1" cellspacing="0">
<tbody>
<tr>
<td colspan="1" rowspan="2" style="width: 75px; text-align: center;"><span style="font-size: 16px;">Sample Number</span></td>
<td colspan="1" rowspan="2" style="width: 50px; text-align: center;"><span style="font-size: 16px;">Sample Type</span></td>
<td colspan="1" rowspan="2" style="width: 60px; text-align: center;"><span style="font-size: 16px;">Pump No</span></td>
<td colspan="1" rowspan="2" style="width: 60px; text-align: center;"><span style="font-size: 16px;">Cowl No</span></td>
<td colspan="1" rowspan="2" style="width: 200px; text-align: center;"><span style="font-size: 16px;">Sample Location</span></td>
<td colspan="2" rowspan="1" style="width: 60px; text-align: center;"><span style="font-size: 16px;">Sampling Times</span></td>
<td colspan="1" rowspan="2" style="width: 60px; text-align: center;"><span style="font-size: 16px;">Duration (mins)</span></td>
<td colspan="2" rowspan="1" style="text-align: center;"><span style="font-size: 16px;">Flow
Rates (l/min)</span>
</td>
<td colspan="1" rowspan="2" style="width: 70px; text-align: center;"><span style="font-size: 16px;">Mean<br>
Flow Rate (l/min)</span>
</td>
<td colspan="1" rowspan="2" style="width: 70px; text-align: center;"><span style="font-size: 16px;">Sample Volume (litres)</span></td>
<td colspan="1" rowspan="2" style="width: 70px; text-align: center;"><span style="font-size: 16px;">Fibres Counted</span></td>
<td colspan="1" rowspan="2" style="width: 70px; text-align: center;"><span style="font-size: 16px;">Graticule Fields</span></td>
<td colspan="1" rowspan="2" style="width: 70px; text-align: center;"><span style="font-size: 16px;">Limit of Detection (f/ml)</span></td>
<td colspan="1" rowspan="2" style="width: 70px; text-align: center;"><span style="font-size: 16px;">Calculated Result (f/ml)</span></td>
<td colspan="1" rowspan="2" style="width: 70px; text-align: center;"><span style="font-size: 16px;">Recorded Result (f/ml)</span></td>
</tr>
<tr>
<td style="width: 40px; text-align: center;"><span style="font-size: 16px;">Start</span></td>
<td style="width: 40px; text-align: center;"><span style="font-size: 16px;">Finish</span></td>
<td style="width: 40px; text-align: center;"><span style="font-size: 16px;">Start</span></td>
<td style="width: 40px; text-align: center;"><span style="font-size: 16px;">Finish</span></td>
</tr>
<tr id="Sample1">
<td><span id="SampleNumber1" style="font-size: 16px;"><%SampleNumber_1%></span></td>
<td><span id="TypeofTest1" style="font-size: 16px;"><%TypeofTest_1%></span></td>
<td><span id="PumpNumber1" style="font-size: 16px;"><%PumpNo_1%></span></td>
<td><span id="CowlNumber1" style="font-size: 16px;"><%CowlNo_1%></span></td>
<td><span id="SampleLocation1" style="font-size: 16px;"><%SampleLocation_1%></span></td>
<td><span id="SampleStart1" style="font-size: 16px;"><%SampleStart_1%></span></td>
<td><span id="SampleFinish1" style="font-size: 16px;"><%SampleFinish_1%></span></td>
<td><span id="SampleDuration1" style="font-size: 16px;"><%SampleDuration_1%></span></td>
<td><span id="FlowRateStart1" style="font-size: 16px;"><%FlowRateStart_1%></span></td>
<td><span id="FlowRateFinish1" style="font-size: 16px;"><%FlowRateFinish_1%></span></td>
<td><span id="FlowRateMinMean1" style="font-size: 16px;"><%FlowRatelminMean_1%></span></td>
<td><span id="SampleVolumeLitres1" style="font-size: 16px;"><%SampleVolumelitres_1%></span></td>
<td><span id="FibresCount1" style="font-size: 16px;"><%FibresCount_1%></span></td>
<td><span id="GraticuleFields1" style="font-size: 16px;"><%GraticuleFields_1%></span></td>
<td><span id="Limit1" style="font-size: 16px;"><%Limit_1%></span></td>
<td><span id="CalculatedResult1" style="font-size: 16px;"><%CalculatedResult_m1%></span></td>
<td><span id="ReportedResult1" style="font-size: 16px;"><%ReportedResult_1%></span></td>
</tr>
</tbody>
函数myFunction(){
如果($(this).find('SampleNumber1')。长度===0&&&$(this).find('TypeofTest1')。长度==0&&$(this.find('PumpNumber1')。长度==0&&$(this.find('SampleLocation1')。长度==0&&$(this.find('SampleStart1')。长度==0&$(this.find('SampleFinish1')。长度==0&$(this.find('SampleDuration1')。长度==0&&$(this)。查找('FlowRateStart1')。长度==0&$(this)。查找('FlowRateFinish1')。长度==0&$(this)。查找('FlowRateMinMean1')。长度==0&$(this)。查找('FibreCount1')。长度==0&$(this)。查找('FibresCount1')。长度==0&$(this)。查找('GradiculeFields1')。长度==0&$(this)。查找('Limit1')).length==0&&$(this.find('CalculatedResult1')。length==0&&$(this.find('ReportedResult1')。length==0){
document.getElementById('Sample1').style.display='none';
}否则{
document.getElementById('Sample1').style.display='block';
};
}
使用
而不是
$(this).find('SampleNumber1').length
document.getElementById('Sample1').style.display = 'none';
document.getElementById('Sample1').style.display = 'block';
您正在尝试查找ID为的元素,因此请在之前指定#
你也可以使用
$('#Sample1').hide();
$('#Sample1').show();
而不是
$(this).find('SampleNumber1').length
document.getElementById('Sample1').style.display = 'none';
document.getElementById('Sample1').style.display = 'block';
编辑/更新
此代码搜索每个id为的tr时以Sample开头。然后搜索此tr内的每个跨度,并检查所有跨度中是否有一个具有内容
$( 'tr[id^="Sample"]' ).each(function() {
var empty = true;
$( this ).find("span").each(function() {
if ($( this ).is(':empty') === false) {
empty = false;
}
});
if (empty === false) {
$(this).show();
} else {
$(this).hide();
}
});
我认为您可以对这个解决方案进行大量清理,并简化代码。以下是我认为您正在努力实现的一系列目标:
以下是jquery代码:
(function($){
var values = $('.value').children('td');
$.each(values, function(){
if($(this).text().length > 0){
$(this).parent('tr.value').show();
}
});
})(jQuery);
将tr设置为类,而不是通过单独的ID引用td:
<table>
<thead>
<tr>
<th>Sample1</th>
<th>Sample2</th>
<th>Sample3</th>
<th>Sample4</th>
</tr>
</thead>
<tbody>
<tr class='value'>
<td>Value1</td>
<td>Value2</td>
<td></td>
<td></td>
</tr>
<tr class='value'>
<td></td>
<td></td>
<td></td>
<td></td>
</tr>
<tr class='value'>
<td></td>
<td>Value2</td>
<td></td>
<td>Value4</td>
</tr>
</tbody>
</table>
您能提供一个JSFIDLE吗?事实上,我最近遇到了一个非常非常棘手的问题,表显示不正确,因为它的“显示/隐藏”代码在某个地方使用了“显示:无/块”,而表实际上需要“显示:表”或“显示:表行”。希望JQuery的show/hide方法能够适当地处理这个问题。$(this).find(“#SampleNumber1”)。length==0
给出了相同的结果result@Jack看看我的解决方案。问题是$(选择器).length给出的是选择器返回的集合的长度,而不是元素内容的长度。您的代码是询问我是否有id为SampleNumber 1的元素,id为SampleNumber 1的元素是否有任何内容。@MichaelHumelsine如何查找内容的长度?@Jack I发布了回答您的问题并提供小提琴演示…这不是您想要的吗?