chartJs柱状图下滑条怎么写？

来源：互联网发布：微博怎么修改个性域名编辑：程序博客网时间：2024/04/29 14:28
demo:链接: http://pan.baidu.com/s/1hrOzctI 密码: armu
用到了2个插件一个是chartJs绘制图
一个是nouislider绘制滑动条
这里写图片描述
<!DOCTYPE html><html><head lang="en">    <meta charset="UTF-8">    <meta name="viewport" content="width=device-width, initial-scale=1.0">    <title></title>    <link href="css/bootstrap.min.css" rel="stylesheet">    <link href="css/plugins/nouslider/nouislider.min.css" rel="stylesheet"></head><body><div class="col-lg-6">    <div class="ibox float-e-margins col-lg-12" style="clear: both;">        <div class="ibox-title">            <h5>Bar Chart Example</h5>        </div>        <div class="ibox-content" style="clear: both;">            <div>                <canvas id="barChart" height="140" style="height: 300px;"></canvas>            </div>        </div>    </div>    <div class="col-lg-12">        <div id="drag-fixed" class="slider_red"></div>    </div></div><script src="js/jquery-2.1.1.js"></script><script src="js/bootstrap.min.js"></script><!-- NouSlider --><script src="js/plugins/nouslider/nouislider.min.js"></script><script src="js/plugins/chartJs/Chart.min.js"></script><script>//dataObj后台动态生成    var DataObj=[{"labels":["2014-5-6","2014-5-7","2014-5-8","2014-5-9","2014-5-10","2014-5-11","2014-5-12"],"data1":[30,29,45,60,100,200,154],"data2":[100,125,325,214,124,124,124]},        {"labels":["2015-6-6","2015-6-7","2015-6-8","2015-6-9","2015-6-10","2015-5-11","2015-6-12"],"data1":[40,29,45,100,120,250,354],"data2":[300,145,325,284,174,20,50]},        {"labels":["2016-6-6","2016-6-7","2016-6-8","2016-6-9","2016-6-10","2016-5-11","2016-6-12"],"data1":[40,29,45,100,120,250,354],"data2":[300,145,325,284,174,20,50]},        {"labels":["2017-6-6","2017-6-7","2017-6-8","2017-6-9","2017-6-10","2017-5-11","2017-6-12"],"data1":[320,29,45,100,120,250,354],"data2":[390,165,325,284,174,240,50]},        {"labels":["2014-5-6","2014-5-7","2014-5-8","2014-5-9","2014-5-10","2014-5-11","2014-5-12"],"data1":[30,29,45,60,100,200,154],"data2":[100,125,325,214,124,124,124]}];//    star绘制柱状图    var barData = {        labels: [],        datasets: [            {                label: "My First dataset",                fillColor: "rgba(220,220,220,0.5)",                strokeColor: "rgba(220,220,220,0.8)",                highlightFill: "rgba(220,220,220,0.75)",                highlightStroke: "rgba(220,220,220,1)",                data: []            },            {                label: "My Second dataset",                fillColor: "rgba(26,179,148,0.5)",                strokeColor: "rgba(26,179,148,0.8)",                highlightFill: "rgba(26,179,148,0.75)",                highlightStroke: "rgba(26,179,148,1)",                data: []            }        ]    };    var barOptions = {        scaleBeginAtZero: true,        scaleShowGridLines: true,        scaleGridLineColor: "rgba(0,0,0,.05)",        scaleGridLineWidth: 1,        barShowStroke: true,        barStrokeWidth: 2,        barValueSpacing: 5,        barDatasetSpacing: 1,        responsive: true    };    var ctx = document.getElementById("barChart").getContext("2d");//    柱形图初始值    $(function(){        barData.labels=DataObj[3].labels;        barData.datasets[0].data=DataObj[3].data1;        barData.datasets[1].data=DataObj[3].data2;        var myNewChart = new Chart(ctx).Bar(barData,barOptions);//加载更新图表    });    var Slider = document.getElementById('drag-fixed');//end 结束绘制//    开始滑动条    noUiSlider.create(Slider, {        start: 4,//滑动条开始出现的位置        connect: [true,false],        range: {            'min':0,//滑动条长度最小值            'max': 4 //滑动条长度最大值        },        step:1//步数    });    Slider.noUiSlider.on('slide', function ( values, handle ) {        //   $("#test-data").text(values[handle]);//得到滑条的值        //  $("#test-data").text(this.get());  this.get() 得到滑条的值        var index=parseInt(this.get());        barData.labels=DataObj[index].labels;        barData.datasets[0].data=DataObj[index].data1;        barData.datasets[1].data=DataObj[index].data2;        var myNewChart = new Chart(ctx).Bar(barData, barOptions);    });//    结束滑动条</script></body></html>
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