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本文为读 lodash 源码的第七十二篇,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
import baseGet from './.internal/baseGet.js'
《lodash源码分析之baseGet》
get 函数可以对对象或者数组深层取值,主要功能是由 baseGet 函数来实现,但是 get 函数可以设置默认值。
get
baseGet
function get(object, path, defaultValue) { const result = object == null ? undefined : baseGet(object, path) return result === undefined ? defaultValue : result }
首先判断 object 是否存在,如果不存在则 result 直接为 undefined,否则使用 baseGet 取值。
object
result
undefined
接着判断返回的 result 是否为 undefined,如果为 undefined,则返回默认值 defaultValue,否则返回取值结果 result。
defaultValue
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 源码的第七十二篇,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
依赖
《lodash源码分析之baseGet》
源码分析
get
函数可以对对象或者数组深层取值,主要功能是由baseGet
函数来实现,但是get
函数可以设置默认值。首先判断
object
是否存在,如果不存在则result
直接为undefined
,否则使用baseGet
取值。接着判断返回的
result
是否为undefined
,如果为undefined
,则返回默认值defaultValue
,否则返回取值结果result
。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: