如何在 highcharts 标签中捕获悬停事件？

Question

以下面的例子为例： http://jsfiddle.net/gh/get/jquery/1.9.1/highslide-software/highcharts.com/tree/master/samples/highcharts/demo/column-rotated-labels/

$(function () {
$('#container').highcharts({
    chart: {
        type: 'column'
    },
    title: {
        text: 'World\'s largest cities per 2014'
    },
    subtitle: {
        text: 'Source: <a href="http://en.wikipedia.org/wiki/List_of_cities_proper_by_population">Wikipedia</a>'
    },
    xAxis: {
        type: 'category',
        labels: {
            rotation: -45,
            style: {
                fontSize: '13px',
                fontFamily: 'Verdana, sans-serif'
            }
        }
    },
    yAxis: {
        min: 0,
        title: {
            text: 'Population (millions)'
        }
    },
    legend: {
        enabled: false
    },
    tooltip: {
        pointFormat: 'Population in 2008: <b>{point.y:.1f} millions</b>'
    },
    plotOptions: {
        series: {
            point:{
           events: {
               mouseOver: function() {alert('hello');}
            }
            }
        }
    },
    series: [{
        name: 'Population',
        data: [
            ['Shanghai', 23.7],
            ['Lagos', 16.1],
            ['Instanbul', 14.2],
            ['Karachi', 14.0],
            ['Mumbai', 12.5],
            ['Moscow', 12.1],
            ['São Paulo', 11.8],
            ['Beijing', 11.7],
            ['Guangzhou', 11.1],
            ['Delhi', 11.1],
            ['Shenzhen', 10.5],
            ['Seoul', 10.4],
            ['Jakarta', 10.0],
            ['Kinshasa', 9.3],
            ['Tianjin', 9.3],
            ['Tokyo', 9.0],
            ['Cairo', 8.9],
            ['Dhaka', 8.9],
            ['Mexico City', 8.9],
            ['Lima', 8.9]
        ],
        dataLabels: {
            enabled: true,
            rotation: -90,
            color: '#FFFFFF',
            align: 'right',
            format: '{point.y:.1f}', // one decimal
            y: 10, // 10 pixels down from the top
            style: {
                fontSize: '13px',
                fontFamily: 'Verdana, sans-serif'
            }
        }
    }]
});
});

我希望能够在标签中捕获 "hover" 事件。在对 Highcharts API 进行一些研究后，我只发现了如何在数据中捕获 "mouseOver" 事件，而不是在标签中。

最终目的是在悬停标签而不是悬停数据时显示工具提示。

Answer 1

您可以使用允许这样做的 customEvents 扩展程序。

Answer 2

我的解决方法是将鼠标悬停事件绑定到标签（或文本）

$('.highcharts-xaxis-labels text').bind('mouseover',function(e){
    alert("You hover on "+$(this).text())
});

让我们试试这个 edited version demo

如何在 highcharts 标签中捕获悬停事件？

How to capture the hover event in highcharts labels?

javascript

highcharts