highcharts map add image to tooltip

问题

I had trouble to add images to Highmap bubble tooltip when hover over bubbles. Anyone knows how to fix it?

Thanks a lot

Here is an example link. Images added on line 24: http://jsfiddle.net/1jm2yxbq/

tooltip: {
formatter: function () {
return '<img src="http://www.w3schools.com/tags/smiley.gif" width="42" height="42">';
}},

回答1:

You just need to set the useHTML property to true:

tooltip: {
              useHTML: true,
              formatter: function () {
                     return '<img src="http://www.w3schools.com/tags/smiley.gif" width="42" height="42">';
                }
            },

I tested it out on the fiddle and it works fine: http://jsfiddle.net/1jm2yxbq/1/

来源：https://stackoverflow.com/questions/40557751/highcharts-map-add-image-to-tooltip