1.数据排序：（展示玫瑰状）
data: [
{ value: 100, name: 'Direct' },
{ value: 300, name: 'Email' },
{ value: 400, name: 'Union Ads' },
{ value: 200, name: 'Video Ads' },
{ value: 500, name: 'Search Engine' }
].sort(function (a, b) {
return a.value - b.value;
}),
标签：知识点,name,Union,value,玫瑰,Ads From： https://www.cnblogs.com/Simoon/p/16735812.html