[英]Cannot access data from methods in Vue.js
我正在嘗試使用 emailjs 通過 Vue.js 中的簡單聯系表格發送 email。 發送郵件后,我想更新頁面,以便顯示已發送郵件而不是表單。 我試圖通過在發送的 boolean 上使用 v-if 來做到這一點,在發送 email 時將其從 false 更改為 true。 但我無法訪問從 emailjs sendEmail
方法內部發送的變量。
以下是聯系頁面的完整代碼:
<template>
<v-container justify-center class="contact-form">
<v-form ref="form" v-model="valid" @submit.prevent="sendEmail" v-if="sent == false">
<v-text-field v-model="name" :rules="namerules" label="Name" name="contact_name" required></v-text-field>
<v-text-field v-model.number="phone" :rules="phonerules" label="Phone number" name="contact_number" required></v-text-field>
<v-text-field v-model="email" :rules="emailrules" label="Email" name="contact_email" required></v-text-field>
<v-textarea v-model="message" :rules="messagerules" label="Message" name="message" required></v-textarea>
<v-btn :disabled="!valid" type="submit" value="Send" color="red" @click="sendEmail">Submit</v-btn>
</v-form>
<v-layout justify-center v-if="sent == true">
<h1>Your Mail Has Been Sent</h1>
</v-layout>
<v-layout justify-center v-if="error == true">
<h2>There was an error sending Your Email. Please Try Again!</h2>
</v-layout>
</v-container>
</template>
<script>
import emailjs from "emailjs-com";
export default {
data() {
return {
valid: false,
sent: false,
error: false,
namerules: [
v => !!v || "Name is Required",
v => /([A-Z])\w+/.test(v) || "Name is Invalid"
],
phonerules: [
v => !!v || "Phone is Required",
v => /^[0-9+]\d*$/.test(v) || "Phone Number is invalid",
v => v != 0 || "Phone Number can't be zeoro!"
],
emailrules: [
v => !!v || "Email is Required",
v => /.+@.+\..+/.test(v) || "Enter a Valid Email"
]
}
},
methods: {
sendEmail: (e) => {
emailjs.sendForm('contact_service', 'contact_form', e.target, 'MY_API_KEY').then((result) => {
this.sent = true;
this.error = false;
console.log('SUCCESS!', result.status, result.text);
}, (error) => {
this.sent = false;
this.error = true;
console.log('FAILED...', error);
});
}
}
};
</script>
<style scoped>
h1 {
color: green;
}
h2 {
color: red;
}
</style>
編輯:這是我得到答案后的解決方法:
將 function 更改為發送 email 為:
methods: {
sendEmail(e) {
this.sending = true;
const self = this;
emailjs.sendForm('contact_service', 'contact_form', e.target, 'user_lYBM45aIuAfPKnfWx0b5n').then(function(result) {
self.sending = false;
self.sent = true;
self.error = false;
console.log('SUCCESS!', result.status, result.text);
}, function (error) {
self.sending = false;
self.sent = false;
self.error = true;
console.log('FAILED...', error);
});
}
}
您的主要問題在於這一行:
sendEmail: (e) => {
VueJS 文檔明確指出在聲明方法時不應使用箭頭函數,因為方法中的this
不會引用 VueJS 組件本身。
請注意,您不應使用箭頭 function 來定義方法(例如
plus: () => this.a++
)。 原因是箭頭函數綁定了父上下文,所以this
不會是你期望的 Vue 實例,並且this.a
將是未定義的。
因此,這將解決您的問題:
sendEmail: function(e) {
或者:
sendEmail(e) {
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