How vue.js implements two-way binding of components

This article mainly introduces how vue.js implements two-way binding of components. The editor thinks it is quite good, so I will share it with you now and give it as a reference. Let’s follow the editor and take a look.

Overview: Component communication is through props. Props default to one-way binding (parent->child). In addition to publishing and subscribing events, another communication Method two-way binding (parent->child, child->parent)

1. Use the .sync (synchronization) modifier

. Properties to be bidirectionally bound use the .sync (synchronization) modifier

. Use .$emit to publish an update event

.Essence is a packaged syntax sugar

##2. Use v-model, which is more convenient

.props is received and fixed with value (, Can be customized) to accept the value of v-model

.emit publishes an event that triggers input by itself (fixed, can be customized)

.Essence is a packaged syntax sugar

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