所以我使用的是带有文本框的 sidenav，类似于 w3schools 中的示例代码:
<!DOCTYPE html>
<html>
<head>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<meta name="viewport" content="width=device-width, initial-scale=1">
<style>
body {
font-family: "Lato", sans-serif;
}
.sidenav {
height: 100%;
width: 0;
position: fixed;
z-index: 1;
top: 0;
left: 0;
background-color: #111;
overflow-x: hidden;
transition: 0.5s;
padding-top: 60px;
}
.sidenav a {
padding: 8px 8px 8px 32px;
text-decoration: none;
font-size: 25px;
color: #818181;
display: block;
transition: 0.3s;
}
.sidenav a:hover {
color: #f1f1f1;
}
.sidenav .closebtn {
position: absolute;
top: 0;
right: 25px;
font-size: 36px;
margin-left: 50px;
}
@media screen and (max-height: 450px) {
.sidenav {padding-top: 15px;}
.sidenav a {font-size: 18px;}
}
</style>
</head>
<body>
<div id="mySidenav" class="sidenav">
<a href="javascript:void(0)" class="closebtn" onclick="closeNav()">×</a>
<a href="#"><input type="text" autofocus="autofocus"/></a>
</div>
<span style="font-size:30px;cursor:pointer" onclick="openNav()">☰ open</span>
<script>
function openNav() {
document.getElementById("mySidenav").style.width = "250px";
}
function closeNav() {
document.getElementById("mySidenav").style.width = "0";
}
$(document).keyup(function(e) {
if (e.keyCode == 27) {closeNav()} // escape
if (e.keyCode == 83) {openNav()} //s
});
</script>
</body>
</html> 我想在 sidenav 打开时自动聚焦文本框。使用 autofocus = "autofocus" 似乎不起作用(就像我在上面的示例中尝试的那样)。我还希望它与我在代码中定义的 keyup 函数结合使用(按“esc”关闭，按“s”打开)。提前致谢。
最佳答案
将 id="f" 赋给 input 标签 和 在打开导航功能中
document.getElementById("f").focus();
<!DOCTYPE html>
<html>
<head>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<meta name="viewport" content="width=device-width, initial-scale=1">
<style>
body {
font-family: "Lato", sans-serif;
}
.sidenav {
height: 100%;
width: 0;
position: fixed;
z-index: 1;
top: 0;
left: 0;
background-color: #111;
overflow-x: hidden;
transition: 0.5s;
padding-top: 60px;
}
.sidenav a {
padding: 8px 8px 8px 32px;
text-decoration: none;
font-size: 25px;
color: #818181;
display: block;
transition: 0.3s;
}
.sidenav a:hover {
color: #f1f1f1;
}
.sidenav .closebtn {
position: absolute;
top: 0;
right: 25px;
font-size: 36px;
margin-left: 50px;
}
@media screen and (max-height: 450px) {
.sidenav {padding-top: 15px;}
.sidenav a {font-size: 18px;}
}
</style>
</head>
<body>
<div id="mySidenav" class="sidenav">
<a href="javascript:void(0)" class="closebtn" onclick="closeNav()">×</a>
<a href="#"><input type="text" id="f"></a>
</div>
<span style="font-size:30px;cursor:pointer" onclick="openNav()">☰ open</span>
<script>
function openNav() {
document.getElementById("mySidenav").style.width = "250px";
document.getElementById("f").focus();
}
function closeNav() {
document.getElementById("mySidenav").style.width = "0";
}
$(document).keyup(function(e) {
if (e.keyCode == 27) {closeNav()} // escape
if (e.keyCode == 83) {openNav()} //s
});
</script>
</body>
</html>关于javascript - 如何在 sidenav 中自动对焦文本框，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/48487449/