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WatchOptions

Methods

guard

Since ver. 5.1.0
Optional
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boolean
 guard(
T
 newValue, 
T
 oldValue)

A function that returns a boolean to determine if the callback should be called. The guard not set by default.

Parameters

  • newValue:

    T

  • oldValue:

    T

Returns

  • type:

    boolean

Props

clearable

Optional
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 clearable

Whether the callback should be removed after calling the clear method. The default value is true.

immediate

Since ver. 5.1.0
Optional
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 immediate

Whether the callback should be called immediately after being added. The default value is false.

once

Optional
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 once

Whether the callback should be called only once. The default value is false.

signal

Since ver. 5.1.0
Optional
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 signal

An AbortSignal. The watch callback will be removed when the abort() method of the AbortController which owns the AbortSignal is called. See AbortController for details.