##jjvein-hasInstallnpm install jv-hasIntroduction判断依据 1. Object: hasOwnProperty 2. 数组: find 3. 字符串: indexOf1 keyword3 dependents1 versionhas@everything-registry/sub-chunk-1996@infinitebrahmanuniverse/nolb-jv@zalastax/nolb-jv1.0.08 years ago