ts定义包含对象数组及新属性

定义包含对象的数组并赋值

tags: {
    name: string
    icon: string
  }[] = [
    {name: '购物消费', icon: 'clothes'},
    {name: '食品餐饮', icon: 'foods'},
    {name: '居家生活', icon: 'houses'},
    {name: '出行交通', icon: 'traffic'},
    {name: '虚拟充值', icon: 'game'},
    {name: '休闲娱乐', icon: 'dianying'},
  ];

定义自己的属性类型

// 定义单个tag的类型
type tag = {
  id: string;
  name: string;
  icon: string
}
type TagListModel = {
// fetch，create，save均为函数
  data: tag[]
  fetch: () => tag[]
  create: (name: string) => string  
  save: () => void
}