can-query-logic/doc/prototype/is-subset.md

query data

@function can-query-logic.prototype.isSubset isSubset
@parent can-query-logic.prototype

Return if a query is a subset of another set.

@signature `queryLogic.isSubset(a, b)`

  Returns true if _a_ is a subset of _b_.  Equal sets are considered subsets of each other. In set theory, subset is
  represented by `A ⊆ B`.

  ```js
  import {QueryLogic} from "can";
  const queryLogic = new QueryLogic();

  const filter = queryLogic.isSubset({filter: {type: "critical"}}, {});
  console.log( filter ); //-> true

  const emptyObject = queryLogic.isSubset({}, {});
  console.log( emptyObject ); //-> true
  ```
  @codepen

  @param  {can-query-logic/query} a A query.
  @param  {can-query-logic/query} b A query.
  @return {Boolean} `true` if `a` is a subset of `b`.