vue v-on 艾特@

vue v-on

内联代码：

<!DOCTYPE html>
<html lang="en"><head><meta charset="UTF-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><title>Document</title>
</head><body><div id="app"><button v-on:click="count++">+</button><div>{{ count }}</div><button @click="count--">-</button></div><script src="https://cdn.bootcdn.net/ajax/libs/vue/2.7.14/vue.js"></script><script>const app = new Vue({el: '#app',data: {count: 100,}})</script></body></html>

运行效果
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methods方法

<!DOCTYPE html>
<html lang="en"><head><meta charset="UTF-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><title>Document</title>
</head><body><script src="https://cdn.bootcdn.net/ajax/libs/vue/2.7.14/vue.js"></script><div id="app"><button @click="fn"> 切换显示 </button><p v-show='isShow'> Hello </p></div><script>const app = new Vue({el: '#app',data: {isShow: true,},methods: {fn() {this.isShow = !this.isShow;},}})</script></body></html>

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带参数

<!DOCTYPE html>
<html lang="en"><head><meta charset="UTF-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><title>Document</title>
</head><body><div id="app"><h3>小黑自动售货机</h3><button @click="buy(5)">可乐5元</button><button @click="buy(10)">咖啡10元</button><button @click="buy(8)">牛奶8元</button><p>银行卡余额：{{ money }}元</p></div><script src="https://cdn.bootcdn.net/ajax/libs/vue/2.7.14/vue.js"></script><script>const app = new Vue({el: '#app',data: {money: 100,},methods: {buy(price) {this.money -= price},}})</script></body></html>