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Component emit Foundation

2022-07-19 07:22:00 【Much less】

Custom events on custom components ：

go（@go） call
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@go How did you get it ：
yes $emit（“go”） Decisive , The names must be consistent

Why? @go It's a click event ：
because @click=‘emit, It's using click event

Sure $emit Multiple events ：

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adopt $emit The method of passing parameters ：

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Receiving parameters ：
Add parameters to the called method , This parameter can be obtained
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emit Multiple parameters ：
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Use with calculated attributes ：

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summary ：

stay vue3 in , Can be used in subcomponents $emit To call the event of the parent element .
On the template output by the sub component , We can define events , Then the output $emit Method .
$emit The first parameter of the method is the name of the definition , This content can be called on the component element , The call interaction content is the event content .

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