Jquery滚动到顶部高度问题
jquery scrollto top height issue
我有多个动态内容部分。每个部分都有标题标签。
First section h2 class name is "bounceInRight"
First section h2 class name is "bounceInLeft"
third section h2 class name is "bounceInRight"
Fourth section h2 class name is "bounceInLeft" and goes on.
如果我到达这个类，我需要添加一些类到另一个div名称"blink"。
为此，我使用了以下代码:
var eyemoveright = $(".bounceInRight h2").offset().top;
var eyemoveleft = $(".bounceInLeft h2").offset().top;
$(window).scroll(function() {
if($(window).scrollTop() > eyemoveright) {
$('.blink').addClass( "move-right");
$('.blink1').addClass( "move-right");
}
if($(window).scrollTop() > eyemoveleft) {
$('.blink').addClass( "move-left");
$('.blink1').addClass( "move-left");
}
});
请看小提琴
http://jsfiddle.net/zvkjfk6r/因为前两个部分工作得很好。正确添加了类。如果到达第三个内容块，则添加类不起作用。因为我用了两个if条件。如何再次调用第一个If条件，如果第三块内容达到??
如果第二个if条件写在第一个条件里面会有问题吗因为它永远不会出现在第二个if
中if($(window).scrollTop() > eyemoveleft) {
console.log("seconfif");
$('.blink').addClass( "move-left");
$('.blink1').addClass( "move-left");
}
JSFIDDLE
第二方法
if(eyemoveright< $(window).scrollTop() && $(window).scrollTop() > eyemoveleft) {
console.log("seconfif");
$('.blink').addClass( "move-left");
$('.blink1').addClass( "move-left");
}
第二个方法JSFIDDLE
移除类后
你应该在每个section中使用循环，并为已经到达的section设置一个标志。
$(window).scroll(function() {
$(".bounceInRight h2").each(function(){
var eyemoveright = $(this).offset().top;
if($(window).scrollTop() > eyemoveright && !$(this).hasClass('reached')) {
console.log('right');
$(this).addClass('reached');
$('.blink').addClass( "move-right");
$('.blink1').addClass( "move-right");
$('.blink').removeClass( "move-left");
$('.blink1').removeClass( "move-left");
}
})
$(".bounceInLeft h2").each(function(){
var eyemoveleft = $(this).offset().top;
if($(window).scrollTop() > eyemoveleft && !$(this).hasClass('reached')) {
console.log('left');
$(this).addClass('reached');
$('.blink').addClass( "move-left");
$('.blink1').addClass( "move-left");
$('.blink').removeClass( "move-right");
$('.blink1').removeClass( "move-right");
}
})
});
你应该加上:
if($(window).scrollTop() < eyemoveright) {
$('.blink').removeClass( "move-right");
$('.blink1').removeClass( "move-right");
}
像下面。
var eyemoveright = $(".bounceInRight h2").offset().top;
var eyemoveleft = $(".bounceInLeft h2").offset().top;
$(window).scroll(function() {
if($(window).scrollTop() > eyemoveright) {
$('.blink').addClass( "move-right");
$('.blink1').addClass( "move-right");
}
if($(window).scrollTop() < eyemoveright) {
$('.blink').removeClass( "move-right");
$('.blink1').removeClass( "move-right");
}
if($(window).scrollTop() > eyemoveleft) {
$('.blink').addClass( "move-left");
$('.blink1').addClass( "move-left");
}
});.blink, .blink1{ background-color:#fff; width:3px; height:3px; position:absolute; animation: blink 2s steps(5, start) infinite; -webkit-animation: blink 2s steps(5, start) infinite; left:90px; top:64px; }
.blink1{ left:124px; top:65px; }
@keyframes blink {
to {
visibility: hidden;
}
}
@-webkit-keyframes blink {
to {
visibility: hidden;
}
}
.blink.move-right{left:50px;}
.blink1.move-right{left:56px;}
.blink.move-left{left:10px;}
.blink1.move-left{left:15px;}
.animation-image{ width:200px; height:100px;}<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div class="animation-image text-center" style="position:fixed; background-color:red;"><span class="blink1 hidden-mob"></span><span class="blink hidden-mob"></span></div>
<br><br><br><br>
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</p>
<div class="clearfix"></div>
<div class="col-sm-5 bounceInRight">
<h2>Letraset sheets containing Lorem Ipsum pa</h2>
</div>
<div class="clearfix"></div>
<p>Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book. It has survived not only five centuries, but also the leap into electronic typesetting, remaining essentially unchanged. It was popularised in the 1960s with the release of Letraset sheets containing Lorem Ipsum passages, and more recently with desktop publishing software like Aldus PageMaker including versions of Lorem Ipsum.
Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book. It has survived not only five centuries, but also the leap into electronic typesetting, remaining essentially unchanged. It was popularised in the 1960s with the release of Letraset sheets containing Lorem Ipsum passages, and more recently with desktop publishing software like Aldus PageMaker including versions of Lorem Ipsum.</p>
<div class="col-sm-5 bounceInLeft">
<h2>Letraset sheets containing Lorem Ipsum pa</h2>
</div>
<p>Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book. It has survived not only five centuries, but also the leap into electronic typesetting, remaining essentially unchanged. It was popularised in the 1960s with the release of Letraset sheets containing Lorem Ipsum passages, and more recently with desktop publishing software like Aldus PageMaker including versions of Lorem Ipsum.
Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book. It has survived not only five centuries, but also the leap into electronic typesetting, remaining essentially unchanged. It was popularised in the 1960s with the release of Letraset sheets containing Lorem Ipsum passages, and more recently with desktop publishing software like Aldus PageMaker including versions of Lorem Ipsum.</p>
<div class="col-sm-5 bounceInRight">
<h2>Letraset sheets containing Lorem Ipsum pa</h2>
</div>
<p>Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book. It has survived not only five centuries, but also the leap into electronic typesetting, remaining essentially unchanged. It was popularised in the 1960s with the release of Letraset sheets containing Lorem Ipsum passages, and more recently with desktop publishing software like Aldus PageMaker including versions of Lorem Ipsum.
Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book. It has survived not only five centuries, but also the leap into electronic typesetting, remaining essentially unchanged. It was popularised in the 1960s with the release of Letraset sheets containing Lorem Ipsum passages, and more recently with desktop publishing software like Aldus PageMaker including versions of Lorem Ipsum.</p>
<div class="col-sm-5 bounceInRight">
<h2>Letraset sheets containing Lorem Ipsum pa</h2>
</div>
<p>Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book. It has survived not only five centuries, but also the leap into electronic typesetting, remaining essentially unchanged. It was popularised in the 1960s with the release of Letraset sheets containing Lorem Ipsum passages, and more recently with desktop publishing software like Aldus PageMaker including versions of Lorem Ipsum.
Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book. It has survived not only five centuries, but also the leap into electronic typesetting, remaining essentially unchanged. It was popularised in the 1960s with the release of Letraset sheets containing Lorem Ipsum passages, and more recently with desktop publishing software like Aldus PageMaker including versions of Lorem Ipsum.</p>
<div class="col-sm-5 bounceInRight">
<h2>Letraset sheets containing Lorem Ipsum pa</h2>
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