可以用内联 JavaScript 语句：
v-on
<div id="app">
<button @click="say('hi')">Say hi</button>
<button @click="say('what')">Say what</button>
</div>
<script>
const app = {
data() {
},
methods: {
say(message) {
alert(message)
}
}
}
Vue.createApp(app).mount('#app')
</script>
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