[GitHub] plainheart edited a comment on issue #9932: How include %

[GitBox]

plainheart edited a comment on issue #9932: How include % 
URL: 
https://github.com/apache/incubator-echarts/issues/9932#issuecomment-465432458
 
 
   try 
[`tooltip.formatter`](https://echarts.apache.org/option.html#tooltip.formatter) 
for your requirements.
   
   For example:
   ```
   formatter: function(params) {
        var total = 0;
        var renderHtml = [];
        renderHtml.push(params[0].name);
        var len = params.length - 1;
        for (var i = 0; i < len; i++) {
                var item = params[i];
                total += +(item.value); // convert string to number
        }
        for (i = 0; i < len; i++) {
                var item = params[i];
                var percent = (item.value / total * 
100).toFixed(2).toString().replace('.00', '');
                renderHtml.push(item.marker + item.seriesName + ': ' + 
item.value + ' (' + percent + '%)');
        }
        return renderHtml.join('<br>')
   }
   ```
   
![image](https://user-images.githubusercontent.com/26999792/53068840-de7f1800-3514-11e9-8621-9e8da06aa78f.png)
   

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