當通過表格過濾/搜索的結果為空時，我試圖隱藏整個 div（里面有一個表格）。
到目前為止，我有這個：
<!DOCTYPE html>
<html>
<head>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<meta name="viewport" content="width=device-width, initial-scale=1">
<style>
* {
box-sizing: border-box;
}
#myInput {
background-image: url('/css/searchicon.png');
background-position: 10px 10px;
background-repeat: no-repeat;
width: 100%;
font-size: 16px;
padding: 12px 20px 12px 40px;
border: 1px solid #ddd;
margin-bottom: 12px;
}
.mytable {
border-collapse: collapse;
width: 100%;
border: 1px solid #ddd;
font-size: 18px;
}
.mytable th, .mytable td {
text-align: left;
padding: 12px;
}
.mytable tr {
border-bottom: 1px solid #ddd;
}
.mytable tr.header, .mytable tr:hover {
background-color: #f1f1f1;
}
</style>
</head>
<body>
<h2>My Customers</h2>
<input type="text" id="myInput" onkeyup="myFunction()" placeholder="Search for names.." title="Type in a name">
<div id="myTable1div">
<table id="myTable" class="mytable" data-name="mytable">
<tr class="header">
<th style="width:60%;">Name</th>
<th style="width:40%;">Country</th>
</tr>
<tr>
<td>Alfreds Futterkiste</td>
<td>Germany</td>
</tr>
<tr>
<td>Berglunds snabbkop</td>
<td>Sweden</td>
</tr>
<tr>
<td>Island Trading</td>
<td>UK</td>
</tr>
<tr>
<td>Laughing Bacchus Winecellars</td>
<td>Canada</td>
</tr>
</table>
</div>
<br><br>
<div id="myTable1div">
<table id="myTable" class="mytable" data-name="mytable">
<tr class="header">
<th style="width:60%;">Name</th>
<th style="width:40%;">Country</th>
</tr>
<tr>
<td>Alfreds Futterkiste</td>
<td>Germany</td>
</tr>
<tr>
<td>Berglunds snabbkop</td>
<td>Sweden</td>
</tr>
<tr>
<td>Island Trading</td>
<td>UK</td>
</tr>
</table>
</div>
<script>
function myFunction() {
var input, filter, table, tr, td, i,alltables;
alltables = document.querySelectorAll("table[data-name=mytable]");
input = document.getElementById("myInput");
filter = input.value.toUpperCase();
alltables.forEach(function(table){
tr = table.getElementsByTagName("tr");
for (i = 0; i < tr.length; i ) {
td = tr[i].getElementsByTagName("td")[0];
if (td) {
if (td.innerHTML.toUpperCase().indexOf(filter) > -1) {
tr[i].style.display = "";
} else {
tr[i].style.display = "none";
}
}
}
});
}
</script>
<! ––hide div that doesnt have any data––>
<script>
$(function(){
var hide = true;
$('#myTable td').each(function(){
var td_content = $(this).text();
if(td_content!=""){
hide = false;
}
})
if(hide){
$('#myTable1div').hide();
}
})
</script>
</body>
</html>如您所見，雖然表格已正確搜索，但<td>仍顯示 div 和其中沒有值的表格。
<td>如果表格在搜索時為空，如何隱藏整個 div ？
uj5u.com熱心網友回復：
您的第一個問題是您有多個具有相同 ID 的元素，例如<div id="myTable1div">. 我不得不給他們每個人一個單獨的ID。
我創建了一個輔助函式 ，hideDivs()它計算設定為 的行數display: none，如果只有其中一個（即標題），則隱藏對應<div>的 .
<!DOCTYPE html>
<html>
<head>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<meta name="viewport" content="width=device-width, initial-scale=1">
<style>
* {
box-sizing: border-box;
}
#myInput {
background-image: url('/css/searchicon.png');
background-position: 10px 10px;
background-repeat: no-repeat;
width: 100%;
font-size: 16px;
padding: 12px 20px 12px 40px;
border: 1px solid #ddd;
margin-bottom: 12px;
}
.mytable {
border-collapse: collapse;
width: 100%;
border: 1px solid #ddd;
font-size: 18px;
}
.mytable th,
.mytable td {
text-align: left;
padding: 12px;
}
.mytable tr {
border-bottom: 1px solid #ddd;
}
.mytable tr.header,
.mytable tr:hover {
background-color: #f1f1f1;
}
</style>
</head>
<body>
<h2>My Customers</h2>
<input type="text" id="myInput" onkeyup="myFunction()" placeholder="Search for names.." title="Type in a name">
<div id="myTable1div">
<table id="myTable" class="mytable" data-name="mytable">
<tr class="header">
<th style="width:60%;">Name</th>
<th style="width:40%;">Country</th>
</tr>
<tr>
<td>Alfreds Futterkiste</td>
<td>Germany</td>
</tr>
<tr>
<td>Berglunds snabbkop</td>
<td>Sweden</td>
</tr>
<tr>
<td>Island Trading</td>
<td>UK</td>
</tr>
<tr>
<td>Laughing Bacchus Winecellars</td>
<td>Canada</td>
</tr>
</table>
</div>
<br><br>
<div id="myTable2div">
<table id="myTable2" class="mytable" data-name="mytable">
<tr class="header">
<th style="width:60%;">Name</th>
<th style="width:40%;">Country</th>
</tr>
<tr>
<td>Alfreds Futterkiste</td>
<td>Germany</td>
</tr>
<tr>
<td>Berglunds snabbkop</td>
<td>Sweden</td>
</tr>
<tr>
<td>Island Trading</td>
<td>UK</td>
</tr>
</table>
</div>
<script>
function hideDivs() {
['#myTable1div', '#myTable2div'].forEach(function (id) {
// From https://stackoverflow.com/a/5325109/378779
if ($(id ' tr:not([style*="display: none"])').length == 1) {
$(id).hide();
} else {
$(id).show();
}
})
}
function myFunction() {
var input, filter, table, tr, td, i, alltables;
alltables = document.querySelectorAll("table[data-name=mytable]");
input = document.getElementById("myInput");
filter = input.value.toUpperCase();
alltables.forEach(function (table) {
tr = table.getElementsByTagName("tr");
for (i = 0; i < tr.length; i ) {
td = tr[i].getElementsByTagName("td")[0];
if (td) {
if (td.innerHTML.toUpperCase().indexOf(filter) > -1) {
tr[i].style.display = "";
} else {
tr[i].style.display = "none";
}
}
}
});
hideDivs();
}
// hide div that doesn't have any data
hideDivs();
</script>
</body>
</html>uj5u.com熱心網友回復：
嘗試在隱藏元素之前檢查元素是否在DOM中呈現。你可以這樣做if ($('#myTable1div').is(':visible'))
轉載請註明出處，本文鏈接：https://www.uj5u.com/qita/440142.html
標籤：javascript html jQuery css