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本文为读 lodash 源码的第二百九十一篇,后续文章会更新到这个仓库中,欢迎 star:pocket-lodash
gitbook也会同步仓库的更新,gitbook地址:pocket-lodash
hasIn 用来判断 object 自身及原型链所有的可枚举属性里是否存在 key 。
hasIn
object
key
源码如下:
function hasIn(object, key) { return object != null && key in Object(object) }
其实就是使用 in 操作符来检测。
in
署名-非商业性使用-禁止演绎 4.0 国际 (CC BY-NC-ND 4.0)
最后,所有文章都会同步发送到微信公众号上,欢迎关注,欢迎提意见:
作者:对角另一面
The text was updated successfully, but these errors were encountered:
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本文为读 lodash 源码的第二百九十一篇,后续文章会更新到这个仓库中,欢迎 star:pocket-lodash
gitbook也会同步仓库的更新,gitbook地址:pocket-lodash
源码分析
hasIn
用来判断object
自身及原型链所有的可枚举属性里是否存在key
。源码如下:
其实就是使用
in
操作符来检测。License
署名-非商业性使用-禁止演绎 4.0 国际 (CC BY-NC-ND 4.0)
最后,所有文章都会同步发送到微信公众号上,欢迎关注,欢迎提意见:
作者:对角另一面
The text was updated successfully, but these errors were encountered: