我在网站上创建了一个计数器页面,该页面在页面加载时会设置动画,但是我试图在用户进入该部分时触发动画。
当前,我拥有此功能,但是动画仅在div超出导航(即:包括导航的屏幕顶部)时触发。我将如何更改此设置,以便在div可见时触发动画?
我还遇到一个问题,即它显示为不带逗号的完整数字,然后变为0并进行动画处理,如何使它显示为0呢?
我对JS很陌生,因此不胜感激。
这是我拥有的:
const convert = str => {
// Find the number
let regx = /(\d{1,3})(\d{3}(?:,|$))/;
// Set a variable
let currStr;
// Start loop
do {
// Replace current string, split it
currStr = (currStr || str.split(`.`)[0])
.replace(regx, `$1,$2`)
} while (currStr.match(regx)); // Loop
// Return our result from function
return (str.split(`.`)[1]) ?
currStr.concat(`.`, str.split(`.`)[1]) :
currStr;
};
$(window).scroll(startCounter);
function startCounter() {
if ($(window).scrollTop() > $('#counter').offset().top) {
$(window).off("scroll", startCounter);
$('.count').each(function() {
$(this).prop('Counter', 0).animate({
Counter: $(this).text()
}, {
duration: 2000,
easing: 'swing',
step: function(now) {
$(this).text(Math.ceil(now));
$(this).text(convert($(this).text()))
}
});
});
}
}
.section-counter {
margin-top: 150vh;
margin-bottom: 150vh;
}
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<section class="section-counter" id="counter">
<div class="row">
<h2>Headline Data Figures</h2>
</div>
<div class="row">
<div class="col span-1-of-2">
<div class="row">
<div id="shiva"><span class="count">1688019</span>
<h3>Contributions</h3>
</div>
</div>
<div id="shiva"><span class="count">82150</span>
<h3>Items of Business</h3>
</div>
</div>
<div class="col span-1-of-2">
<div class="row">
<div id="shiva"><span class="count">10505</span>
<h3>Meetings</h3>
</div>
</div>
<div id="shiva"><span class="count">168260</span>
<h3>Written/Oral Questions</h3>
</div>
</div>
</div>
<div class="row arrow-dark arrow__7 animated pulse infinite">
<i class="ion-md-arrow-dropdown"></i>
</div>
</section>
答案 0 :(得分:1)
如果我理解正确,那么问题是,您正在将div的偏移量与屏幕的 top 进行比较,而实际上您是想找出屏幕底部的位置是,并将其与div的位置进行比较。
关于从0
开始,您可以让元素使用data attribute来确定最大值,而不是文本,这样您就可以让元素读0
直到它们开始计数:
const convert = str => {
// Find the number
let regx = /(\d{1,3})(\d{3}(?:,|$))/;
// Set a variable
let currStr;
// Start loop
do {
// Replace current string, split it
currStr = (currStr || str.split(`.`)[0])
.replace(regx, `$1,$2`)
} while (currStr.match(regx)); // Loop
// Return our result from function
return (str.split(`.`)[1]) ?
currStr.concat(`.`, str.split(`.`)[1]) :
currStr;
};
$(window).scroll(startCounter);
function startCounter() {
var bottomOfScreen = $(window).scrollTop() + $(window).innerHeight();
if (bottomOfScreen > $('#counter').offset().top) {
$(window).off("scroll", startCounter);
$('.count').each(function() {
$(this).prop('Counter', 0).animate({
Counter: $(this).attr('data-max')
}, {
duration: 2000,
easing: 'swing',
step: function(now) {
$(this).text(Math.ceil(now));
$(this).text(convert($(this).text()))
}
});
});
}
}
.section-counter {
margin-top: 150vh;
margin-bottom: 150vh;
}
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<section class="section-counter" id="counter">
<div class="row">
<h2>Headline Data Figures</h2>
</div>
<div class="row">
<div class="col span-1-of-2">
<div class="row">
<div id="shiva"><span class="count" data-max="1688019">0</span>
<h3>Contributions</h3>
</div>
</div>
<div id="shiva"><span class="count" data-max="812150">0</span>
<h3>Items of Business</h3>
</div>
</div>
<div class="col span-1-of-2">
<div class="row">
<div id="shiva"><span class="count" data-max="10505">0</span>
<h3>Meetings</h3>
</div>
</div>
<div id="shiva"><span class="count" data-max="168260">0</span>
<h3>Written/Oral Questions</h3>
</div>
</div>
</div>
<div class="row arrow-dark arrow__7 animated pulse infinite">
<i class="ion-md-arrow-dropdown"></i>
</div>
</section>
答案 1 :(得分:-1)
一旦用户进入某个元素,我将为您提供启动动画的逻辑。
相关的事件触发器是ONMOUSEOVER,因此将其合并...
<div id="abc" onmouseover="AnimateIt();"></div>
无需赘言,像这样,我们的元素必须在其样式开始时已暂停其动画。
animation-play-state:paused;
所以要进行动画处理的JavaScript逻辑...
function AnimateIt(){ abc.style.animationPlayState='running'; }
就是这样。