我如何创建一个像chartsjs一样移动图形的背景? [英] How can i create a background of moving graphs like chartsjs?
问题描述
如果我进入
我想要实现的是这些文本和按钮背后的移动图形墙纸。我想知道如何在我的网站上实现这一目标?
这是一个真实的图表吗?或者只是一个动画picutre?
谢谢!
这是Chart.JS中的一个应有图表,当您检查该元素位于<$ c $时c>< canvas id =hero-bar> 。然后,您可以通过在JavaScript中查找标识为 hero-bar
的元素来查找该图表的工作方式。该条形图的代码恰好从源代码行108-161开始( http://www.chartjs.org
在这种情况下,这些值只是在计时器上随机化的,下面是该页面上该图表的源代码:
/ p> var data = [],
barsCount = 50,
labels = new Array(barsCount),
updateDelayMax = 500,
$ id = function(id){
return document.getElementById(id);
},
random = function(max){return Math.round(Math.random()* 100)},$ b $ helpers = Chart.helpers;
Chart.defaults.global.responsive = true;
for(var i = barsCount - 1; i> = 0; i--){
data.push(Math.round(Math.random()* 100));
};
新图表($ id('hero-bar')。getContext('2d'))。Bar({
labels:labels,
datasets:[{
fillColor: '#2B303B',
data:data
}]
},{
showScale:false,
barShowStroke:false,
barValueSpacing:1,
showTooltips:false,
onAnimationComplete:function(){
//在更新期间获取英雄图的范围
var heroChart = this,
timeout;
//每次更新被触发时停止运行
this.options.onAnimationComplete = randomUpdate;
this.options.animationEasing ='easeOutQuint';
randomUpdate ();
函数randomUpdate(){
heroChart.stop();
clearTimeout(timeout);
//获取一个随机条
timeout = setTimeo ut(function(){
var randomNumberOfBars = Math.floor(Math.random()* barsCount),
i;
for(i = randomNumberOfBars - 1; i> = 0; i--){
heroChart.datasets [0] .bars [Math.floor(Math.random()* barsCount)]。 value = Math.round(Math.random()* 100);
};
heroChart.update();
},Math.random()* updateDelayMax);
};
}
});
If i go into the website http://www.chartjs.org/ ,
I see the wallpaper of moving graphs as shown:
What i want to achieve is the moving graph wallpaper behind these texts and buttons. I was wondering how do i achieve that on my website?
Is it a real graph? Or just an animated picutre?
Thanks !
This is an accual chart made in Chart.JS, note when you inspect that element it is on a <canvas id="hero-bar">
. Then you can find how that chart works by looking in the JavaScript for the element with an id of hero-bar
. The code for that bar chart happens to be starting on lines 108-161 in the source ( http://www.chartjs.org/) of the page.
In this case the values are simply randomized on a timer, below is the source code for that chart on thier page:
var data = [],
barsCount = 50,
labels = new Array(barsCount),
updateDelayMax = 500,
$id = function(id){
return document.getElementById(id);
},
random = function(max){ return Math.round(Math.random()*100)},
helpers = Chart.helpers;
Chart.defaults.global.responsive = true;
for (var i = barsCount - 1; i >= 0; i--) {
data.push(Math.round(Math.random() * 100));
};
new Chart($id('hero-bar').getContext('2d')).Bar({
labels : labels,
datasets : [{
fillColor : '#2B303B',
data : data
}]
},{
showScale : false,
barShowStroke : false,
barValueSpacing: 1,
showTooltips : false,
onAnimationComplete : function(){
// Get scope of the hero chart during updates
var heroChart = this,
timeout;
// Stop this running every time the update is fired
this.options.onAnimationComplete = randomUpdate;
this.options.animationEasing = 'easeOutQuint';
randomUpdate();
function randomUpdate(){
heroChart.stop();
clearTimeout(timeout);
// Get a random bar
timeout = setTimeout(function(){
var randomNumberOfBars = Math.floor(Math.random() * barsCount),
i;
for (i = randomNumberOfBars - 1; i >= 0; i--) {
heroChart.datasets[0].bars[Math.floor(Math.random() * barsCount)].value = Math.round(Math.random() * 100);
};
heroChart.update();
},Math.random() * updateDelayMax);
};
}
});
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