SOURCE

let myButton = Vue.extend({
    template: `<button @click="click">{{message}}</button>`,
    data: function () {
        return {

        }
    },
    props: ["message", "clickContent"],
    methods: {
        click: function () {
            debugger;
            console.log(this.clickContent);
        }
    }
});

let app = new Vue({
    el: "#app",
    components: {
        "my-button": myButton,
    },
});

    <div id="app">
      <my-button v-bind:message="'哈哈哈'" v-bind:clickContent="'点击了哈哈哈'" />
    </div>