我想在加载时为动态未知值的饼图设置动画。让我们说我尽快检索值并将其转换为舍入百分比:
var percentage = Math.round(sum * 100 / total);
然后我把我的价值放在那里:
<div class="pie animated" id="pie-get-percentage"></div>
$('#pie-get-percentage').html(percentage);
SVG
$(document).ready(function() {
$('#pie-get-percentage').html(percentage);
function $$(selector, context) {
context = context || document;
var elements = context.querySelectorAll(selector);
return Array.prototype.slice.call(elements);
}
$$('.pie').forEach(function(pie) {
var p = parseFloat(pie.textContent);
var NS = "http://www.w3.org/2000/svg";
var svg = document.createElementNS(NS, "svg");
var circle = document.createElementNS(NS, "circle");
var title = document.createElementNS(NS, "title");
circle.setAttribute("r", 16);
circle.setAttribute("cx", 16);
circle.setAttribute("cy", 16);
circle.setAttribute("stroke-dasharray", p + " 100");
svg.setAttribute("viewBox", "0 0 32 32");
title.textContent = pie.textContent;
pie.textContent = '';
svg.appendChild(title);
svg.appendChild(circle);
pie.appendChild(svg);
});
});
CSS
.pie-wrapper {
.pie {
width: 100px;
height: 100px;
display: inline-block;
margin: 10px;
transform: rotate(-90deg);
}
svg {
background: $primary;
border-radius: 50%;
}
circle {
fill: $primary;
stroke: $secondary;
stroke-width: 32;
}
@keyframes grow {
to {
stroke-dasharray: 100 100
}
}
.pie.animated {
animation: grow 2s linear;
}
}
正如你所看到的,我认为我必须简单地使用.pie.animated
CSS规则,但到目前为止,我还无法动画到我的动态值,只有完整的圆圈。
基本上如果我的价值是42%,我试图将我的圈子增加到SVG的42%。但问题是我无法真正为CSS动画赋予动态价值。也许我可能需要使用内联CSS,但我不确定动画关键帧是否可行。
JSFiddle是here
答案 0 :(得分:2)
我玩你的JSFiddle的JQuery部分,这就是我最终的结果。
<div class="pie">60%</div>
<div class="pie">90%</div>
<div class="pie">12%</div>
这个想法很简单。我每次使用javascript间隔计时器来调用计数计时器。我还添加了一些max-val,inc-val和其他相关变量来使其工作。
function $$(selector, context) {
context = context || document;
var elements = context.querySelectorAll(selector);
return Array.prototype.slice.call(elements);
}
function count(){
var isUsed = false;
$$('.pie').forEach(function(pie) {
var p = parseFloat(pie.textContent);
if(pie.maxValue == null){
pie.maxValue = p;
pie.incValue = p / 100.0;
pie.lastValue = 0;
}
else
pie.lastValue = pie.lastValue + pie.incValue;
if(pie.lastValue <= pie.maxValue){
var NS = "http://www.w3.org/2000/svg";
var svg = document.createElementNS(NS, "svg");
var circle = document.createElementNS(NS, "circle");
var title = document.createElementNS(NS, "title");
circle.setAttribute("r", 16);
circle.setAttribute("cx", 16);
circle.setAttribute("cy", 16);
circle.setAttribute("stroke-dasharray", pie.lastValue + " 100");
svg.setAttribute("viewBox", "0 0 32 32");
title.textContent = pie.textContent;
pie.textContent = '';
svg.appendChild(title);
svg.appendChild(circle);
pie.appendChild(svg);
isUsed = true;
}
});
if(isUsed)
window.setTimeout(function() { count(); }, 30);
}
window.setTimeout(function() { count(); }, 30);
count();