目前,我正在学习如何用javascript和jquery编写。我写了一个简单的jquery代码,你有一个导航菜单,点击它滚动到溢出容器内的特定div。但是,滚动功能不起作用。如果有人可以帮助我,我将非常感激。提前谢谢。
我的代码:
$(document).ready(function() {
$("#Anchor_A").on('click', function() {
$('.Container').animate({
scrollTop: $("#Box_A").offset().top
}, 'slow');
});
$("#Anchor_B").on('click', function() {
$('.Container').animate({
scrollTop: $("#Box_B").offset().top
}, 'slow');
});
$("#Anchor_C").on('click', function() {
$('.Container').animate({
scrollTop: $("#Box_C").offset().top
}, 'slow');
});
$("#Anchor_D").on('click', function() {
$('.Container').animate({
scrollTop: $("#Box_D").offset().top
}, 'slow');
});
$("#Anchor_E").on('click', function() {
$('.Container').animate({
scrollTop: $("#Box_E").offset().top
}, 'slow');
});
});
.Wrapper{
display:flex;
position:relative;
width:90vw;
height:90vh;
background-color:purple;
}
.Menu{
position:relative;
width:10vw;
height:90vh;
background-color:blue;
}
.Menu li{
position:relative;
font-size:4vw;
line-height:5vw;
text-align:center;
color:white;
cursor:pointer;
list-style-type: none;
}
.Container{
position:relative;
width:80vw;
height:90vh;
background-color:red;
overflow-y:hidden;
}
.Box{
position:relative;
width:80vw;
height:90vh;
background-color:purple;
cursor:pointer;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div class="Wrapper">
<div class="Menu">
<li id="Anchor_A">A</li>
<li id="Anchor_B">B</li>
<li id="Anchor_C">C</li>
<li id="Anchor_D">D</li>
<li id="Anchor_E">E</li>
</div>
<div class="Container">
<div class="Box" id="Box_A">
Box A
</div>
<div class="Box" id="Box_B">
Box B
</div>
<div class="Box" id="Box_C">
Box C
</div>
<div class="Box" id="Box_D">
Box D
</div>
<div class="Box" id="Box_E">
Box E
</div>
</div>
</div>
致以最诚挚的问候,
George S.
答案 0 :(得分:2)
这里的关键点是你需要使用position()而不是offset()方法。 offset()方法返回相对于文档的坐标。
描述:获取相对于文档的匹配元素集中第一个元素的当前坐标。
但是,您尝试在容器内滚动它们。请参阅实施:
注1:我对代码进行了优化,因此使用data-target属性代替多个类似的块来定义哪个块滚动到。
注2: position()方法从容器的左上角返回坐标。因此,一旦内容滚动,就改变坐标。这就是为什么我们需要通过添加 $('。Container')来补偿它.rollTop()。
$(document).ready(function() {
$(".Menu li").on('click', function() {
$('.Container').animate({
scrollTop: $($(this).data('target')).position().top + $('.Container').scrollTop()
}, 'slow');
});
});
.Wrapper {
display: flex;
position: relative;
width: 90vw;
height: 90vh;
background-color: purple;
}
.Menu {
position: relative;
width: 10vw;
height: 90vh;
background-color: blue;
}
.Menu li {
position: relative;
font-size: 4vw;
line-height: 5vw;
text-align: center;
color: white;
cursor: pointer;
list-style-type: none;
}
.Container {
position: relative;
width: 80vw;
height: 90vh;
background-color: red;
overflow-y: hidden;
}
.Box {
position: relative;
width: 80vw;
height: 90vh;
background-color: purple;
cursor: pointer;
}
<html>
<head>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
</head>
<body>
<div class="Wrapper">
<div class="Menu">
<li id="Anchor_A" data-target="#Box_A">A</li>
<li id="Anchor_B" data-target="#Box_B">B</li>
<li id="Anchor_C" data-target="#Box_C">C</li>
<li id="Anchor_D" data-target="#Box_D">D</li>
<li id="Anchor_E" data-target="#Box_E">E</li>
</div>
<div class="Container">
<div class="Box" id="Box_A">
Box A
</div>
<div class="Box" id="Box_B">
Box B
</div>
<div class="Box" id="Box_C">
Box C
</div>
<div class="Box" id="Box_D">
Box D
</div>
<div class="Box" id="Box_E">
Box E
</div>
</div>
</div>
</body>
</html>