1
我在CSS3和JavaScript中遇到問題。我想讓那些圖表欄在用戶滾動時做動畫處理？現在它在頁面加載後動畫500ms。我想在用戶滾動時啓動圖表欄動畫。但是，我不知道如何檢測用戶是否可以看到特定的圖表。向用戶滾動時向下繪製圖表
setTimeout(function start() {
$('.bar').each(function (i) {
var $bar = $(this);
$(this).append('<span class="count"></span>')
setTimeout(function() {
$bar.css('width', $bar.attr('data-percent'));
}, i * 100);
});
$('.count').each(function() {
$(this).prop('Counter', 0).animate({
Counter: $(this).parent('.bar').attr('data-percent')
}, {
duration: 2000,
easing: 'swing',
step: function (now) {
$(this).text(Math.ceil(now) + '%');
}
});
});
}, 500)@import url(http://fonts.googleapis.com/css?family=Droid+Serif:400, 400italic|Montserrat:400, 700);
html, body, div, span, applet, object, iframe, h1, h2, h3, h4, h5, h6, p, blockquote, pre, a, abbr, acronym, address, big, cite, code, del, dfn, em, img, ins, kbd, q, s, samp, small, strike, strong, sub, sup, tt, var, b, u, i, center, dl, dt, dd, ol, ul, li, fieldset, form, label, legend, table, caption, tbody, tfoot, thead, tr, th, td, article, aside, canvas, details, embed, figure, figcaption, footer, header, hgroup, menu, nav, output, ruby, section, summary, time, mark, audio, video {
margin: 0;
padding: 0;
border: 0;
font: inherit;
font-size: 100%;
vertical-align: baseline;
}
html {
line-height: 1;
}
ol, ul {
list-style: none;
}
table {
border-collapse: collapse;
border-spacing: 0;
}
caption, th, td {
text-align: left;
font-weight: normal;
vertical-align: middle;
}
q, blockquote {
quotes: none;
}
q:before, q:after, blockquote:before, blockquote:after {
content:"";
content: none;
}
a img {
border: none;
}
article, aside, details, figcaption, figure, footer, header, hgroup, main, menu, nav, section, summary {
display: block;
}
* {
box-sizing: border-box;
}
body {
color: #333;
-webkit-font-smoothing: antialiased;
font-family:"Montserrat", sans-serif;
padding: 2%;
}
.wrap {
width: 50%;
margin: 0 auto;
}
h1 {
font-family:"Montserrat", sans-serif;
font-weight: bold;
text-align: center;
font-size: 1.5em;
padding: .5em 0;
margin-bottom: 1em;
border-bottom: 1px solid #dadada;
letter-spacing: 3px;
text-transform: uppercase;
}
ul li {
line-height: 2;
font-weight: bold;
font-family:"Montserrat", sans-serif;
font-size: .85em;
text-transform: uppercase;
clear: both;
}
ul li:before {
content:"\2023";
padding: 0 1em 0 0;
}
.bar {
background: #e74c3c;
width: 0;
margin: .25em 0;
color: #fff;
position: relative;
transition: width 2s, background .2s;
clear: both;
}
.bar:nth-of-type(2n) {
background: #ed7669;
}
.bar .label {
font-size: .75em;
padding: 1em;
background: #3d3d3d;
width: 8em;
display: inline-block;
position: relative;
z-index: 2;
font-weight: bold;
font-family:"Montserrat", sans-serif;
}
.bar .label.light {
background: #575757;
}
.count {
position: absolute;
right: .25em;
top: .75em;
padding: .15em;
font-size: .75em;
font-weight: bold;
font-family:"Montserrat", sans-serif;
}<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div class="wrap">
<h1>Animated Bar Graphs</h1>
<div class="holder">
<div class="bar cf" data-percent="85%"><span class="label">Photoshop</span>
</div>
<div class="bar cf" data-percent="75%"><span class="label light">Illustrator</span>
</div>
<div class="bar cf" data-percent="65%"><span class="label">Indesign</span>
</div>
<div class="bar cf" data-percent="90%"><span class="label light">HTML</span>
</div>
<div class="bar cf" data-percent="90%"><span class="label">CSS</span>
</div>
<div class="bar cf" data-percent="80%"><span class="label light">jQuery</span>
</div>
<div class="bar cf" data-percent="85%"><span class="label light">RWD</span>
</div>
<div class="bar cf" data-percent="75%"><span class="label">PHP</span>
</div>
<div class="bar cf" data-percent="80%"><span class="label light">WordPress</span>
</div>
<div class="bar cf" data-percent="70%"><span class="label">SASS/SCSS</span>
</div>
</div>
</div>
你想動畫每一個人的酒吧或全圖表？ – neeh