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Echarts自定义折线图例,增加选中功能

分类: IT文章 • 2023-11-24 23:12:49

用Echarts图表开发，原本的Echarts图例不一定能满足我们的视觉要求。

下面是Echarts 折线图自定义图例，图例checked选中，相应的折线线条会随之checked，其余未选中的图例对应的折线opacity会降低，（柱状图，饼图等等也类似于此），这是一个小例子（如果满足不了您的视觉要求，您可以自己定义css样式，达到自己想要的视觉效果）：

Echarts自定义折线图例,增加选中功能

<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title>Echarts 自定义折线图例</title>
<script type="text/javascript" src="https://cdn.bootcss.com/jquery/3.2.1/jquery.min.js"></script>
<script type="text/javascript" src="https://cdn.bootcss.com/echarts/3.7.1/echarts.min.js"></script>
<style>
    ul,li{ list-style:none;}
    .charts-left-list {
        list-style: none;
        overflow: hidden;
        float: left;
        width: 100%;
        padding: 0;
    }
    .charts-left-list li {
        float: left;
        width: 100%;
        color: #4A4A4A;
        font-size: 13px;
        line-height: 30px;
        border-bottom: 1px solid #EEEEEE;
    }
    .pull-left {
        float: left !important;
    }
    span.pull-right {
        padding: 0 6px;
        float: right !important;
    }
    li.state-selected {
        background-color: rgba(240, 225, 28, 0.3);
    }
    
    span.item-color{
        float:left;
        width:10px;
        height:10px;
        border-radius:50%;
        margin-top: 9px;
        margin-right: 6px;
    }
    .tooltip-all{
        max-width:180px;
        padding:10px 16px;
    }
    .custom-tooltip{
        float: left;
        width:100%;
    }
    .tooltip-date{
        float: left;
        width:100%;
        padding-bottom: 10px;
        border-bottom: 1px solid #EEEEEE;
    }
    .tooltip-detail{
        float: left;
        padding:10px 0;
    }
    .item-name{
        float:left;
    }
    .item-num{
        float:right;
    }
    
    
</style>
</head>

<body>

<div class="charts-left-list" style="30%; float:left">
    <ul>
        <li>
            <span class="pull-left">
                <span class="num">1</span>
                <span class="list-color"></span>
                <span class="list-name">安凱客車</span>
            </span>
            <span class="pull-right">8.50</span>
        </li>
        <li>
            <span class="pull-left">
                <span class="num">2</span>
                <span class="list-color"></span>
                <span class="list-name">奧馳</span>
            </span>
            <span class="pull-right">8.20</span>
        </li>
        <li>
            <span class="pull-left">
                <span class="num">3</span>
                <span class="list-color"></span>
                <span class="list-name">奧迪</span>
            </span>
            <span class="pull-right">8.02</span>
        </li>
        <li>
            <span class="pull-left">
                <span class="num">4</span>
                <span class="list-color"></span>
                <span class="list-name">阿斯頓馬丁</span>
            </span>
            <span class="pull-right">7.87</span>
        </li>
        <li>
            <span class="pull-left">
                <span class="num">5</span>
                <span class="list-color"></span>
                <span class="list-name">寶駿</span>
            </span>
            <span class="pull-right">7.50</span>
        </li>
        <li>
            <span class="pull-left">
                <span class="num">6</span>
                <span class="list-color"></span>
                <span class="list-name">寶馬</span>
            </span>
            <span class="pull-right">6.12</span>
        </li>
        <li>
            <span class="pull-left">
                <span class="num">7</span>
                <span class="list-color"></span>
                <span class="list-name">保時捷</span>
            </span>
            <span class="pull-right">5.78</span>
        </li>
        <li>
            <span class="pull-left">
                <span class="num">8</span>
                <span class="list-color"></span>
                <span class="list-name">寶沃</span>
            </span>
            <span class="pull-right">5.11</span>
        </li>
        <li>
            <span class="pull-left">
                <span class="num">9</span>
                <span class="list-color"></span>
                <span class="list-name">北奔</span>
            </span>
            <span class="pull-right">4.67</span>
        </li>
        <li>
            <span class="pull-left">
                <span class="num">10</span>
                <span class="list-color"></span>
                <span class="list-name">奔馳</span>
            </span>
            <span class="pull-right">4.18</span>
        </li>
    </ul>
</div>

<div id="chartmain" style="70%; height: 400px; float:right;"></div>

<script>
    //ECharts
    var colors = ['#F8E71C', '#7ED321', '#009688', '#FF9800', '#E91E63', '#50E3C2', '#CDDC39', '#03A9F4', '#9C27B0', '#2813FA'];
    option = {
        color: colors,
        title : {
            subtext: '营销指数'
        },
        animation: false,
        tooltip : {
            trigger: 'axis',
            formatter: function(params) {
                //console.log(params);
                var result = '';
                    result += '<div class="tooltip-all"><span class="tooltip-date">'+params[0].name+'</span><div class="tooltip-detail">';
                params.forEach(function (item) {
                    result += '<div class="custom-tooltip"><span class="item-color" style="background-color:' + item.color + '"></span><span class="item-name">'+item.seriesName+'</span><span class="item-num">'+item.value+'</span></div>';
                });
                result += '</div></div>';
                return result;
            }
        },
        legend : {
            show: false,
            data: [
            '安凱客車','奧馳', '奧迪','阿斯頓馬丁', '寶駿','寶馬', '保時捷','寶沃', '北奔','奔馳'
            ]
        },
        grid : {
            top : 40,
            bottom: 70,
            right: 80,
            left: 34,
        },
        dataZoom : {
            show : true,
            realtime : true,
            showDetail: true,
            y: 380,
            height: 20,
            backgroundColor: 'rgba(255,255,255,0.5)',
            dataBackgroundColor: '#EEEEEE',
            fillerColor: 'rgba(252,249,215,0.5)',
            handleColor: 'rgba(240,225,28,0.8)',
            handleSize: '22',
            start : 25,
            end : 70
        },
        calculable : true,
        xAxis : [
            {
                type : 'category',
                boundaryGap : false,
               data : ['2016/9/08','2016/10/08','2016/11/08','2016/12/08','2017/01/08','2017/02/08','2017/03/08','2017/04/08','2017/05/08','2017/06/08','2017/07/08','2017/08/08','2017/09/08','2017/10/08','2017/11/08','2017/12/08'],
               axisLine:{
                    lineStyle:{
                        color: '#EEEEEE',
                         1,
                    }
                },
                axisLabel : {
                    textStyle: {
                        color: '#C8C6C6',
                        fontSize: 10
                    }
                }
            }
        ],
        yAxis : [
            {
                type : 'value',
                axisLabel : {
                    formatter: '{value}',
                    textStyle: {
                        color: '#C8C6C6',
                        fontSize: 13
                    }
                },
                axisLine:{
                    lineStyle:{
                        color: '#EEEEEE',
                         1,
                    }
                },
                splitLine: {  
                    lineStyle: {
                        color: ['#EEEEEE']  
                    }  
                }
                
            }
        ],
        series : [
            {
                name:'安凱客車',
                smooth: true,
                type:'line',
                symbol:'none',
                data:[6.3, 7.5, 7.9, 8.2, 8.4, 8.8, 9,6.3,7.5, 7.9, 8.5, 8, 7.6, 7, 6,9],
                lineStyle:{
                    normal:{
                        opacity: 1
                    }
                }
            },
            {
                name:'奧馳',
                smooth: true,
                type:'line',
                symbol:'none',
                data:[5.5, 6.5, 6.2, 7, 7.5, 8, 8.3,6,7, 5.5, 8.2, 6, 7, 6, 4,6],
                lineStyle:{
                    normal:{
                        opacity: 1
                    }
                }
            },
            {
                name:'奧迪',
                smooth: true,
                type:'line',
                symbol:'none',
                data:[5.7, 6.2, 5, 4.3, 3, 5.2, 4,7,6.1, 5.3, 4, 6.2, 4.5, 6.8, 5.4,8.6],
                lineStyle:{
                    normal:{
                        opacity: 1
                    }
                }
            },
            {
                name:'阿斯頓馬丁',
                smooth: true,
                type:'line',
                symbol:'none',
                data:[4.8, 6, 5.6, 5.2, 4.8, 5.4, 3.9,5.7,3.6, 2.8, 4.2, 3.6, 2.9, 4.3, 3.4,5.8],
                lineStyle:{
                    normal:{
                        opacity: 1
                    }
                }
            },
            {
                name:'寶駿',
                smooth: true,
                type:'line',
                symbol:'none',
                data:[4.2, 5.4, 5.2, 4.6, 4, 5, 3.5,5.2,3.1, 4, 6, 3.1, 4, 2.5, 3,5],
                lineStyle:{
                    normal:{
                        opacity: 1
                    }
                }
            },
            {
                name:'寶馬',
                smooth: true,
                type:'line',
                symbol:'none',
                data:[3.8, 4.6, 4.9, 4, 5, 3, 4.5,3,3.8, 4.6, 2.5, 2.4, 3.6, 3.1, 2.6,4.5],
                lineStyle:{
                    normal:{
                        opacity: 1
                    }
                }
            },
            {
                name:'保時捷',
                smooth: true,
                type:'line',
                symbol:'none',
                data:[3.2, 4.1, 4.6, 5, 3.6, 2.4, 3.4,2,3, 5.6, 2, 3, 4, 2.1, 2.3,3.5],
                lineStyle:{
                    normal:{
                        opacity: 1
                    }
                }
            },
            {
                name:'寶沃',
                smooth: true,
                type:'line',
                symbol:'none',
                data:[2.6, 3.4, 4, 4.2, 3.2, 2, 3,2.5,5, 4.2, 1.8, 3.6, 3.4, 1.8, 1.9,2.9],
                lineStyle:{
                    normal:{
                        opacity: 1
                    }
                }
            },
            {
                name:'北奔',
                smooth: true,
                type:'line',
                symbol:'none',
                data:[2.1, 3, 3.5, 3.8, 2.8, 1.5, 2.4,2.9,4.1, 3.1, 1.2, 4, 3, 1.2, 1.6,2.4],
                lineStyle:{
                    normal:{
                        opacity: 1
                    }
                }
            },
            {
                name:'奔馳',
                smooth: true,
                type:'line',
                symbol:'none',
                data:[1.5, 2.5, 3, 3.2, 2, 1, 3.6,2.1,4.5, 2.5, 0.8, 3.4, 2.5, 0.6, 1.8,2.1],
                lineStyle:{
                    normal:{
                        opacity: 1
                    }
                }
            }
        ]
    };
     
    
    //初始化echarts实例
    var myChart = echarts.init(document.getElementById('chartmain'));

    $('.charts-left-list li').bind('click',function(){
        var index = $(this).index();
        if($(this).hasClass('state-selected')){
            $(this).removeClass('state-selected');
        }else{
            $(this).addClass('state-selected').attr('value',index);
        }
        
    
        for(var i=0; i<option.series.length; i++){
            option.series[i].lineStyle.normal.opacity = 0.1;
        }
        
        if ($('.state-selected').length==0){
            $('.charts-left-list li').each(function(){
                var all_val = $(this).index();
                option.series[all_val].lineStyle.normal.opacity = 1;
            });    
        }else{
            $('.charts-left-list li.state-selected').each(function(){
                var the_val = $(this).attr('value');
                option.series[the_val].lineStyle.normal.opacity = 1;
            });
        }
        
        
        
        myChart.setOption(option);    
        

    });
    
    
    

    //使用制定的配置项和数据显示图表
    myChart.setOption(option);
    
    window.onresize = function () {
        myChart.resize();
    };
    
    
</script>
</body>
</html>

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