如何在过滤器html搜索框中隐藏列表项。
例如,仅当我单击搜索框然后显示项目列表时,它才会显示项目
否则以常规方式隐藏列表项。
如果有人可以纠正这个问题。
<!DOCTYPE html>
<html>
<head>
<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 12px;
background-repeat: no-repeat;
width: 100%;
font-size: 16px;
padding: 12px 20px 12px 40px;
border: 1px solid #ddd;
margin-bottom: 12px;
}
#myUL {
list-style-type: none;
padding: 0;
margin: 0;
}
#myUL li a {
border: 1px solid #ddd;
margin-top: -1px; /* Prevent double borders */
background-color: #f6f6f6;
padding: 12px;
text-decoration: none;
font-size: 18px;
color: black;
display: block
}
#myUL li a:hover:not(.header) {
background-color: #eee;
}
</style>
</head>
<body>
<h2>My Phonebook</h2>
<input type="text" id="myInput" onkeyup="myFunction()" placeholder="Search for names.." title="Type in a name">
<ul id="myUL">
<li><a href="#">Adele</a></li>
<li><a href="#">Agnes</a></li>
<li><a href="#">Billy</a></li>
<li><a href="#">Bob</a></li>
<li><a href="#">Calvin</a></li>
<li><a href="#">Christina</a></li>
<li><a href="#">Cindy</a></li>
</ul>
<script>
function myFunction() {
var input, filter, ul, li, a, i;
input = document.getElementById("myInput");
filter = input.value.toUpperCase();
ul = document.getElementById("myUL");
li = ul.getElementsByTagName("li");
for (i = 0; i < li.length; i++) {
a = li[i].getElementsByTagName("a")[0];
if (a.innerHTML.toUpperCase().indexOf(filter) > -1) {
li[i].style.display = "";
} else {
li[i].style.display = "none";
}
}
}
</script>
</body>
</html>
如果有人可以纠正这个问题。
答案 0 :(得分:0)
嗨,朋友,我更新了它,我只是评论了焦点获得部分 请阅读代码中的注释,以查看是否要进行某种搜索。 你应该现在就走
<!DOCTYPE html>
<html>
<head>
<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 12px;
background-repeat: no-repeat;
width: 100%;
font-size: 16px;
padding: 12px 20px 12px 40px;
border: 1px solid #ddd;
margin-bottom: 12px;
}
#myUL {
list-style-type: none;
padding: 0;
margin: 0;
}
#myUL li a {
border: 1px solid #ddd;
margin-top: -1px; /* Prevent double borders */
background-color: #f6f6f6;
padding: 12px;
text-decoration: none;
font-size: 18px;
color: black;
display: block
}
#myUL li a:hover:not(.header) {
background-color: #eee;
}
</style>
</head>
<body>
<h2>My Phonebook</h2>
<input type="text" id="myInput" onkeyup="myFunction()" placeholder="Search for names.." title="Type in a name">
<ul id="myUL">
<li><a href="#">Adele</a></li>
<li><a href="#">Agnes</a></li>
<li><a href="#">Billy</a></li>
<li><a href="#">Bob</a></li>
<li><a href="#">Calvin</a></li>
<li><a href="#">Christina</a></li>
<li><a href="#">Cindy</a></li>
</ul>
<script>
var UL = document.getElementById("myUL");
// hilde the list by default
UL.style.display = "none";
var searchBox = document.getElementById("myInput");
// show the list when the input receive focus
searchBox.addEventListener("focus", function(){
// UL.style.display = "block";
});
// hide the list when the input receive focus
searchBox.addEventListener("blur", function(){
UL.style.display = "none";
});
function myFunction() {
var input, filter, ul, li, a, i;
input = document.getElementById("myInput");
ul = document.getElementById("myUL");
filter = input.value.toUpperCase();
// if the input is empty hide the list
if(filter.trim().length < 1) {
ul.style.display = "none";
return false;
} else {
ul.style.display = "block";
}
li = ul.getElementsByTagName("li");
for (i = 0; i < li.length; i++) {
a = li[i].getElementsByTagName("a")[0];
// This is when you want to find words that contain the search string
if (a.innerHTML.toUpperCase().indexOf(filter) > -1) {
li[i].style.display = "";
} else {
li[i].style.display = "none";
}
// This is when you want to find words that start the search string
/*if (a.innerHTML.toUpperCase().startsWith(filter)) {
li[i].style.display = "";
} else {
li[i].style.display = "none";
}*/
}
}
</script>
</body>
</html>
答案 1 :(得分:0)
您可以做的就是,一旦DOM准备就绪,只需隐藏UL el,然后在输入字段设置为焦点时显示列表。在下面使用jquery尝试以下代码。
$(function(){
$('#myUL').hide();
$('#myInput').on('focus',function(){
$('#myUL').show();
});
})
答案 2 :(得分:0)
如果你提到你的“myUL”: - 为每个列表项添加一个类
<li class='people'>Adele</li>)
然后添加一个CSS组件默认隐藏列表
在 JavaScript 中: 更改此部分:
if (a.innerHTML.toUpperCase().indexOf(filter) > -1)
{
li[i].style.display = "";
} else {
li[i].style.display = "none";
}
到(如果相反并且过滤 ==""):
if (!(a.innerHTML.toUpperCase().indexOf(filter) > -1)) && filter == "")
{
li[i].style.display = "none";
} else {
li[i].style.display = "block";
}
}