javascript - 如何为选项卡添加onmouseout,以便在鼠标移出时不会显示选项卡内容?
问题描述
我正在尝试为选项卡功能添加一个 onmouseout,我正在使用 w3schools 选项卡示例,它有一个 onmouseover 并且在将鼠标悬停在 tablink 上时会显示 tabcontent,但内容仍然存在,并且 onmouseout 可能会解决我的问题,唯一的问题是我不知道如何解决这个问题。谢谢!
例子
function openCity(evt, cityName) {
// Declare all variables
var i, tabcontent, tablinks;
// Get all elements with class="tabcontent" and hide them
tabcontent = document.getElementsByClassName("tabcontent");
for (i = 0; i < tabcontent.length; i++) {
tabcontent[i].style.display = "none";
}
// Get all elements with class="tablinks" and remove the class "active"
tablinks = document.getElementsByClassName("tablinks");
for (i = 0; i < tablinks.length; i++) {
tablinks[i].className = tablinks[i].className.replace(" active", "");
}
// Show the current tab, and add an "active" class to the link that opened the tab
document.getElementById(cityName).style.display = "block";
evt.currentTarget.className += " active";
}
<div class="tab">
<button class="tablinks" onmouseover="openCity(event, 'London')">London</button>
<button class="tablinks" onmouseover="openCity(event, 'Paris')">Paris</button>
<button class="tablinks" onmouseover="openCity(event, 'Tokyo')">Tokyo</button>
</div>
<div id="London" class="tabcontent">
<h3>London</h3>
<p>London is the capital city of England.</p>
</div>
<div id="Paris" class="tabcontent">
<h3>Paris</h3>
<p>Paris is the capital city of France.</p>
</div>
<div id="Tokyo" class="tabcontent">
<h3>Tokyo</h3>
<p>Tokyo is the capital city of Japan.</p>
</div>
在这里看看它是如何工作的
解决方案
将 mouseout 侦听器添加到您的选项卡div
const tabs = document.querySelector('.tab');
tabs.addEventListener("mouseout", function( event ) {
// Get all elements with class="tabcontent" and hide them
const tabcontent = document.getElementsByClassName("tabcontent");
for (i = 0; i < tabcontent.length; i++) {
tabcontent[i].style.display = "block";
}
}, false)
function openCity(evt, cityName) {
// Declare all variables
var i, tabcontent, tablinks;
// Get all elements with class="tabcontent" and hide them
tabcontent = document.getElementsByClassName("tabcontent");
for (i = 0; i < tabcontent.length; i++) {
tabcontent[i].style.display = "none";
}
// Get all elements with class="tablinks" and remove the class "active"
tablinks = document.getElementsByClassName("tablinks");
for (i = 0; i < tablinks.length; i++) {
tablinks[i].className = tablinks[i].className.replace(" active", "");
}
// Show the current tab, and add an "active" class to the link that opened the tab
document.getElementById(cityName).style.display = "block";
evt.currentTarget.className += " active";
}
const tabs = document.querySelector('.tab');
tabs.addEventListener("mouseout", function( event ) {
// Get all elements with class="tabcontent" and hide them
const tabcontent = document.getElementsByClassName("tabcontent");
for (i = 0; i < tabcontent.length; i++) {
tabcontent[i].style.display = "block";
}
}, false)
<div class="tab">
<button class="tablinks" onmouseover="openCity(event, 'London')">London</button>
<button class="tablinks" onmouseover="openCity(event, 'Paris')">Paris</button>
<button class="tablinks" onmouseover="openCity(event, 'Tokyo')">Tokyo</button>
</div>
<div id="London" class="tabcontent">
<h3>London</h3>
<p>London is the capital city of England.</p>
</div>
<div id="Paris" class="tabcontent">
<h3>Paris</h3>
<p>Paris is the capital city of France.</p>
</div>
<div id="Tokyo" class="tabcontent">
<h3>Tokyo</h3>
<p>Tokyo is the capital city of Japan.</p>
</div>
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