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  • By Ashley Boucher
    How to Use Svelte Stores to Share Data Between Components svelte stores

    In this article, you’re going to learn about Svelte stores - Svelte’s mechanism to share state and data between different, unrelated components - by building a very basic shopping app as an example.

    When building React applications, you might use something like Redux to share state outside the component hierarchy, or for simpler applications, you might “lift state” to share data between sibling components.

    Svelte stores are a built-in functionality that enables you to manage state in a more graceful way.

    Prerequisites

    To follow along with this tutorial, you’ll need the following:

    • Node.js installed on your machine
    • Some basic familiarity with component based JavaScript front-end frameworks

    Set up your Svelte app

    Open a command prompt or terminal window and run the following commands to clone a Svelte template, install any required dependencies, and start your local server (on port 5000):

    npx degit sveltejs/template svelte-stores-demo
    cd svelte-stores-demo
    npm install
    npm run …
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  • By Ashley Boucher
    How to Trigger a Usage Alert with the Twilio CLI usagealert.png

    The Twilio CLI has many capabilities, including allowing you to keep track of how much of the Twilio API you’re using for billing purposes. In addition to checking your usage amounts, you can also set up a trigger that will let you know when you’ve spent a certain amount of money. To learn how to do this, follow along!.

    Prerequisites

    To get started with this tutorial, you’ll need the following items ahead of time:

    Login to the Twilio CLI

    Open up a terminal or command prompt and login to the Twilio CLI by running the following command:

    twilio login
    

    This will prompt you to enter your Twilio Account SID and Auth Token, both of which …

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  • By Ashley Boucher
    How to Send a Picture on WhatsApp Using Twilio and JavaScript header - How to Send a Picture on WhatsApp Using Twilio and JavaScript

    The WhatsApp Business API from Twilio is a powerful, yet easy to use service that allows you to communicate with your users on the popular messaging app.

    In this article, we’ll walk you through how you can develop a functional JavaScript program to send an image to a user through WhatsApp.

    Twilio WhatsApp console with an image and message "check out this owl!"

    Prerequisites

    To get started with this tutorial, you’ll need the following:

    • A smartphone with an active WhatsApp account, to test the project.

    The Twilio WhatsApp sandbox

    Twilio provides a WhatsApp sandbox, where you can easily develop and test your application. Once your application is complete you can request production access for your Twilio phone number, which requires approval by WhatsApp.

    In this section you are going to connect your smartphone to …

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  • By Ashley Boucher
    How to Receive WhatsApp Messages in JavaScript Using Express How to Receive WhatsApp Messages in JavaScript Using Express

    The WhatsApp Business API from Twilio is a powerful, yet easy to use service that allows you to communicate with your users on the popular messaging app. In this tutorial you are going to learn how to create a JavaScript application that can receive and handle WhatsApp messages.

    Project demo

    Prerequisites

    To get started with this tutorial, you’ll need the following:

    • Node.js installed on your machine
    • A free Twilio account (sign up with this link and we’ll both get $10 in free credit when you upgrade your account)
    • A smartphone with an active WhatsApp account, to test the project.

    The Twilio WhatsApp sandbox

    Twilio provides a WhatsApp sandbox, where you can easily develop and test your application. Once your application is complete you can request production access for your Twilio phone number, which requires approval by WhatsApp.

    In this section you are going to connect your smartphone to the …

    Read More
  • By Ashley Boucher
    Transcribe a Voice Message in Node.js with Twilio Functions voicetranscribe.png

    In this tutorial you’ll leverage Twilio Programmable Voice to receive phone calls at your Twilio phone number, and transcribe any voice messages left by the caller. This guide can be used as a foundation to build your own voicemail system.

    Prerequisites

    To get started with this tutorial, you’ll need the following:

    Create a new Twilio Functions Service

    Through Twilio, you can configure a webhook that will handle any incoming calls to your Twilio phone number.

    You’ll need a place to host the code for the webhook - this could be your own server, or locally running application, but for this tutorial you’ll use Twilio Functions. Twilio Functions is a serverless environment that lets you deploy backend services without the overhead of setting …

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  • By Ashley Boucher
    How to Check your Twilio Account Balance in JavaScript accountbalance.png

    Twilio APIs make it possible to add communication features to your application, but to consume these APIs you have to keep track of your spending and ensure your account balance stays above zero.

    Your balance is available in the main page when you log in to your Twilio Console, but having to actively monitor your account is tedious and inconvenient.

    In this tutorial you are going to learn how to write a script that retrieves your account balance using JavaScript. You can also schedule this script to run on a regular cadence, and even set up SMS based notifications if you drop below a certain balance.

    Prerequisites

    To get started with this tutorial, you’ll need the following:

    Create a Node.js project

    From your …

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  • By Ashley Boucher
    How to Receive a Phone Call in Node.js with Twilio Functions How to Receive a Phone Call in Node.js with Twilio Functions

    Twilio Voice is an easy and highly customizable service that allows you to automate your telephone workflows. In this tutorial you are going to learn how to create a Node.js application, powered by Twilio Functions, in order to receive phone calls on your Twilio number.

    Prerequisites

    To follow this tutorial you need the following items:

    Project setup

    In this section you are going to set up a new Twilio Functions service. Twilio Functions is a serverless environment that lets you deploy backend services without the overhead of setting up a server.

    If you …

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  • By Ashley Boucher
    How to Send an SMS with Node.js header - How to Send an SMS with Node.js

    Twilio is all about powering communication and doing it conveniently and fast in any language.  

    With the help of Twilio and Node.js, you can send a quick SMS without having to pick up your mobile device.

    Let's get started!

    Prerequisites

    • A free or paid Twilio account. If you are new to Twilio get your free account now! (If you sign up through this link, Twilio will give you $10 credit when you upgrade.)
    • Node.js installed on your machine
    • npm or another package manager
    • A phone where you can receive SMS messages

    Project set up

    Run the following command from your terminal or command prompt to create a new directory for your project files on your computer:

    mkdir node-sms
    

    Change directory into this new folder, initiate a new Node.js project, and install the two packages you’ll need: the Twilio Node.js Helper Library and dotenv, for loading environment variables: …

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  • By Ashley Boucher
    Make a Phone Call From Your Command Line With the Twilio CLI phonecallcommandline

    Twilio Programmable Voice allows you to make and receive voice calls in your software application. In this tutorial, you’ll see a demonstration of how to use Programmable Voice to make a voice call directly from the Twilio CLI

    Prerequisites

    • A free Twilio account (register here and receive $10 in Twilio credit!)
    • Node.js installed on your machine

    Set up your environment

    Your first step is to make sure you have the Twilio CLI installed on your computer. You can use npm or another package manager to install it. From your terminal or command prompt window, run the following command:

    npm install twilio-cli -g
    

    Once the CLI is installed, you can login by running the command:

    t …
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  • By Ashley Boucher
    Send an SMS with Svelte and Twilio Functions sveltesms.png

    In this article you’ll learn how to send an SMS from your Svelte app. Because Svelte is a client-side framework, you’ll need to have a backend server that can handle sending the message, otherwise your Twilio credentials would be exposed. For this, you’ll create an API using Twilio Functions.

    To demonstrate these concepts, you’ll build a Svelte app with a button. When the button is clicked, a POST request will be made to your API. The API will send a message and then return a response back to your Svelte app.

    Prerequisites

    In order to follow along with this tutorial, you’ll need these tools and technologies:

    • npm or yarn
    • Node.js installed on your machine
    • If you’re using VS Code, you might want to snag this Svelte extension
    • A free Twilio account (if you sign up with this link, we’ll both get $10 in Twilio credit when you upgrade!)
    • A …
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