vue create my-awesome-app
...
yarn serve

<!--
 data-netlify="true" 表明使用 form 功能
 netlify-honeypot="bot-field" 指定机器人识别字段
 -->
<template>
 <form
 id="app"
 method="POST"
 name="contact"
 data-netlify="true"
 netlify-honeypot="bot-field"
 @submit.prevent="handleSubmit"
 >
 <input name="bot-field" hidden>
 <label for="username">
  用户名：
  <input
  type="text"
  id="username"
  placeholder="请输入你的用户名"
  name="username"
  v-model="form.username"
  >
 </label>
 <label for="email">
  邮箱：
  <input type="email" id="email" placeholder="请输入你的邮箱" name="email" v-model="form.email">
 </label>
 <button type="submit">Submit</button>
 </form>
</template>

handleSubmit() {
 axios
 .post(
  "/",
  this.encode({
  "form-name": "contact", // 请求数据一定要加上 form-name 属性
  ...this.form
  }),
  {
  header: { "Content-Type": "application/x-www-form-urlencoded" }
  }
 )
 .then(() => {
  alert("提交成功");
 })
 .catch(() => {
  alert("提交失败");
 });
}

yarn add prerender-spa-plugin --dev

const path = require('path')
const PrerenderSPAPlugin = require('prerender-spa-plugin')

module.exports = {
 configureWebpack: () => {
 if (process.env.NODE_ENV !== 'production') return
 return {
  plugins: [
  new PrerenderSPAPlugin({
   staticDir: path.join(__dirname, 'dist'),
   routes: ['/']
  })
  ]
 }
 }
}

<template>
 <!--
 data-netlify="true" 表明使用 form 功能
 netlify-honeypot="bot-field" 指定机器人识别字段
 -->
 <form
 id="app"
 method="POST"
 name="contact"
 data-netlify="true"
 netlify-honeypot="bot-field"
 @submit.prevent="handleSubmit"
 >
 <input name="bot-field" hidden>
 <label for="username">
  用户名：
  <input
  type="text"
  id="username"
  placeholder="请输入你的用户名"
  name="username"
  v-model="form.username"
  >
 </label>
 <label for="email">
  邮箱：
  <input type="email" id="email" placeholder="请输入你的邮箱" name="email" v-model="form.email">
 </label>
 <button type="submit">Submit</button>
 </form>
</template>

<script>
import axios from "axios";

export default {
 name: "app",
 data() {
 return {
  form: {
  username: "",
  email: ""
  }
 };
 },
 methods: {
 encode(data) {
  return Object.keys(data)
  .map(
   key => `${encodeURIComponent(key)}=${encodeURIComponent(data[key])}`
  )
  .join("&");
 },
 handleSubmit() {
  axios
  .post(
   "/",
   this.encode({
   "form-name": "contact",
   ...this.form
   }),
   {
   header: { "Content-Type": "application/x-www-form-urlencoded" }
   }
  )
  .then(() => {
   alert("提交成功");
  })
  .catch(() => {
   alert("提交失败");
  });
 }
 }
};
</script>

<style>
#app {
 font-family: "Avenir", Helvetica, Arial, sans-serif;
 -webkit-font-smoothing: antialiased;
 -moz-osx-font-smoothing: grayscale;
 text-align: center;
 color: #2c3e50;
 margin-top: 60px;
}
label {
 display: block;
}
</style>