Vue 指令之v-on的使用

<div id="app">
<button v-on:click="test">测试</button>
</div>
<script>
let vm = new Vue({
el: '#app',
methods: {
test: function() {
console.log(123)
},
}
})
</script>

<button v-on:click="test">测试</button>

<button @click="test">测试</button>

<div id="app">
<span v-on:click="go2('222')">
<!-- .stop 阻止冒泡 -->
<span v-on:click.stop="go('111')">点我</span>
</span>

<br>

<!-- 只有第一次点击会触发函数 -->
<span v-on:click.once="go(333)">只触发一次</span>
</div>

<script>
let vm = new Vue({
el: '#app',
methods: {
test: function() {
console.log(123)
},
go: function(msg) {
console.log(msg, this)
},
go2: function(msg) {
console.log(msg, this)
},
}
})
</script>