ParamMap
A map that provides access to the required and optional parameters specific to a route. The map supports retrieving a single value with get() or multiple values with getAll().
      
      interface ParamMap {
  keys: string[]
  has(name: string): boolean
  get(name: string): string | null
  getAll(name: string): string[]
}
    参见
属性
| 属性 | 说明 | 
|---|---|
| keys: string[] | 只读 Names of the parameters in the map. | 
方法
| Reports whether the map contains a given parameter. | 
| Retrieves a single value for a parameter. | 
| Retrieves multiple values for a parameter. | 
