WebCAD-Lib-TS API 文档 - v1.0.0
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isNullOrUndefined
Function isNullOrUndefined
isNullOrUndefined
(
t
:
any
)
:
boolean
检查值是否为null或undefined
Parameters
t
:
any
要检查的值
Returns
boolean
是否为null或undefined
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WebCAD-Lib-TS API 文档 - v1.0.0
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检查值是否为null或undefined