在具有padding-top:25px
和position:relative
的div中,存在具有div
的class='mydiv'
,其中包含具有span
的position:absolute
和其他几个元素.mydiv
具有有限的height
和overflow-y set to auto
。 span
使用div
从top:0px
中移出。当我们向下滚动.mydiv
,然后单击span
时,.mydiv
会出于未知原因向上滚动。这是不需要的。如何防止这种情况,同时允许span
监听其他事件来显示我的JavaScript?
这是问题的摘要:
<!DOCTYPE html>
<html>
<head>
<style>
.mydiv {
border: 1px solid black;
height: 100px;
overflow-y: auto;
}
.container {
padding-top: 25px;
position: relative;
}
.event {
position: absolute;
top:0;
border: solid 2px black;
color: red;
}
.event:hover {
cursor:pointer;
}
</style>
<script>
function myevent() {
console.log('Event triggered');
}
</script>
</head>
<body>
<div class="container">
<div class="mydiv">
<span class="event" type="button" onClick='myevent();'>CLICK ME EVENT LISTENER (scroll down before) </span>
Some content<br>Some content<br>Some content<br>Some content<br>Some content<br>Some content<br>Some content<br>Some content<br>Some content<br>Some content<br>Some content<br>Some content<br>Some content<br>Some content<br>Some content<br>Some content<br>Some content<br>Some content<br>Some content<br>Some content<br>
</div>
</div>
<p>For some reason, this html code has to keep this structure. When the user click of event listener, the div should not scroll up.</p>
</body>
</html>
最佳答案
这是我使用两个按钮实现的。
你的问题离不开jQuery scrollTop函数
function preventDefault(e) {
e = e || window.event;
if (e.preventDefault)
e.preventDefault();
e.returnValue = false;
}
function event1() {
console.log('Event triggered');
if (window.addEventListener)
window.addEventListener('DOMMouseScroll', preventDefault, false);
window.onwheel = preventDefault;
}
function event2() {
console.log('Event triggered');
if (window.removeEventListener)
window.removeEventListener('DOMMouseScroll', preventDefault, false);
window.onwheel = null;
}
<!DOCTYPE html>
<html>
<head>
<style>
.mydiv {
border: 1px solid black;
height: 100px;
overflow-y: auto;
}
.container {
padding-top: 25px;
position: relative;
}
.event {
position: relative;
top:0;
border: solid 2px black;
color: red;
}
.event1 {
position: relative;
border: solid 2px black;
color: red;
}
.event1:hover {
cursor:pointer;
}
.event2:hover {
cursor:pointer;
}
</style>
</head>
<body>
<div class="container">
<span class="event1" type="button" onClick='event2();'>CLICK ME to enable scrolling (scroll down before) </span>
<div class="mydiv">
Some content<br>Some content<br>Some content<br>Some content<br>Some content<br>Some content<br>Some content<br>Some content<br>Some content<br>Some content<br>Some content<br>Some content<br>Some content<br>Some content<br>Some content<br>Some content<br>Some content<br>Some content<br>Some content<br>Some content<br>
</div>
<span class="event2" type="button" onClick='event1();'>CLICK ME to disable scrolling (scroll down before) </span>
</div>
<p>For some reason, this html code has to keep this structure. When the user click of event listener, the div should not scroll up.</p>
</body>
</html>
//完全归因于thread及其作者
关于html - 如何防止默认的CSS滚动onclick并仅允许javascript事件?,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/40208128/