Hello World

Create a Kontent project

Project is the primary organizational unit of your content.

To create a new project:

1. Click the project switcher in the top left.
2. Click Projects.
3. Click Create new project in the top-right corner.
4. Type a name for your project, for example Hello World.
5. Click Create project.
6. Click Open project.

Now you can model the first content type.

Create a content type

Content types (sometimes called content templates) define the structure of a piece of content – a content item. They are made of content elements such as texts and images. Think of content types as templates that you will create, and be able to re-use in the future.

A content type can be used by a single content item (for example, a homepage) or by many content items (for example, each article can be based on the same Article content type).

Now create a content type for a homepage with a headline, some text, and a picture:

1. In Content model, click Create new.
2. In Content type name, type Homepage.
   1. Drag in a Text element and name it Headline.
   2. Drag in a Rich text element and name it Body text.
   3. Drag in an Asset element and name it Picture.
3. Click Save.

That's it, your content type is ready to use.

To see all the content types that were created, select Content model.

Create a content item

You can now create a content item based on the new Homepage content type. A content item is an instance of a content type.

1. In  Content & assets, click Create new.
2. If collections are available to you, select one for the new content item.
3. Select Homepage as the content type.
4. In Content item name, type Hello Headless World.
5. Fill in the Headline and Body text elements.
6. Upload an image to the Picture asset element. If you like, you can use our Kontent logo.

Publish your content

To publish your content item simply click on the Publish action button at the top.

Note that you can later set up your content workflow according to your needs.

A short time after publishing, your content item is publicly available via the Delivery API. 

Access your content

Each content item can be accessed at a specific URL similar to this one:

https://deliver.kontent.ai/<YOUR_PROJECT_ID>/items/<CONTENT_ITEM_CODENAME>

1. Replace <YOUR_PROJECT_ID> with the ID of your project:
   1. In Project settings, click API keys.
   2. In the Delivery API card, click Copy to clipboard.
2. Replace <CONTENT_ITEM_CODENAME> with the codename of your content item:
   1. In  Content & assets, click the Hello Headless World content item to open it.
   2. Click the More actions button in the top-right corner.
   3. Click Codename at the bottom of the list.
   4. Click Copy to clipboard.
3. Open the URL in your browser.

For example, the URL can look like this:

https://deliver.kontent.ai/8d20758c-d74c-4f59-ae04-ee928c0816b7/items/hello_headless_world

The API will return your content item as a structured JSON object that is easy to parse by any programming language.

JSON
{
  "item": {
    "system": {
      "id": "cbd09ce9-31f1-4168-9939-dcebd2571b49",
      "name": "Hello Headless World",
      "codename": "hello_headless_world",
      "language": "default",
      "type": "homepage",
      "sitemap_locations": [],
      "last_modified": "2019-09-24T10:21:16.4870359Z"
    },
    "elements": {
      "headline": {
        "type": "text",
        "name": "Headline",
        "value": "Hello Headless World!"
      },
      "body_text": {
        "type": "rich_text",
        "name": "Body text",
        "images": {},
        "links": {},
        "modular_content": [],
        "value": "<p>Kontent is a cloud-based platform based on the concept of <a href=\"https://kontent.ai/learn/tutorials/start-with-kontent/what-is-content-as-a-service\">Content as a Service</a> (CaaS). It's an application that allows content editors to create, review and manage content.</p>\n<p>But unlike a traditional CMS, it makes no assumptions about how the content is displayed. It simply delivers the content as JSON through a Web API to a platform or device of your choice.</p>"
      },
      "picture": {
        "type": "asset",
        "name": "Picture",
        "value": [
          {
            "name": "hello_kontent.png",
            "description": "Kontent logo",
            "type": "image/png",
            "size": 10999,
            "url": "https://assets-us-01.kc-usercontent.com:443/8d20758c-d74c-4f59-ae04-ee928c0816b7/c81966ef-467e-4c5b-bd84-e36ddfac2979/hello_kontent.png",
            "width": 439,
            "height": 395
          }
        ]
      }
    }
  },
  "modular_content": {}
}
{
  "item": {
    "system": {
      "id": "cbd09ce9-31f1-4168-9939-dcebd2571b49",
      "name": "Hello Headless World",
      "codename": "hello_headless_world",
      "language": "default",
      "type": "homepage",
      "sitemap_locations": [],
      "last_modified": "2019-09-24T10:21:16.4870359Z"
    },
    "elements": {
      "headline": {
        "type": "text",
        "name": "Headline",
        "value": "Hello Headless World!"
      },
      "body_text": {
        "type": "rich_text",
        "name": "Body text",
        "images": {},
        "links": {},
        "modular_content": [],
        "value": "<p>Kontent is a cloud-based platform based on the concept of <a href=\"https://kontent.ai/learn/tutorials/start-with-kontent/what-is-content-as-a-service\">Content as a Service</a> (CaaS). It's an application that allows content editors to create, review and manage content.</p>\n<p>But unlike a traditional CMS, it makes no assumptions about how the content is displayed. It simply delivers the content as JSON through a Web API to a platform or device of your choice.</p>"
      },
      "picture": {
        "type": "asset",
        "name": "Picture",
        "value": [
          {
            "name": "hello_kontent.png",
            "description": "Kontent logo",
            "type": "image/png",
            "size": 10999,
            "url": "https://assets-us-01.kc-usercontent.com:443/8d20758c-d74c-4f59-ae04-ee928c0816b7/c81966ef-467e-4c5b-bd84-e36ddfac2979/hello_kontent.png",
            "width": 439,
            "height": 395
          }
        ]
      }
    }
  },
  "modular_content": {}
}

Display your content on a website

In this part of the tutorial, you will learn how to use JavaScript to display the content from a JSON object onto a web page. The JSON response contains the three elements as objects which are specified by their codenames: headline, body_text, and picture. 

Adding HTML

First, you will create an HTML file and declare which HTML elements you want to populate. The order of elements in the HTML file is the order in which the content will appear on the website. Create a new, blank text file and name it index.html.

Inside of the HTML file insert the following code:

HTML
<!DOCTYPE html>
<head>
<title>Hello World</title>
    <!-- Include the Delivery SDK and its dependency -->
    <script src="https://unpkg.com/rxjs@6.4.0/bundles/rxjs.umd.min.js"></script>
    <script src="https://cdn.jsdelivr.net/npm/@kentico/kontent-delivery/_bundles/kontent-delivery.browser.umd.min.js"></script>
    <!-- Points to an external JavaScript file that will be added in the next step -->
    <script src="main.js" async defer></script>
</head>
<body>
     <!-- The HTML elements themselves have no value. Using JavaScript, you'll pull the content from your Kontent project into the elements -->
    <img id="banner">
    <h1 id="headline"></h1>
    <p id="bodytext"></p>
</body>
</html>
<!DOCTYPE html>
<head>
<title>Hello World</title>
    <!-- Include the Delivery SDK and its dependency -->
    <script src="https://unpkg.com/rxjs@6.4.0/bundles/rxjs.umd.min.js"></script>
    <script src="https://cdn.jsdelivr.net/npm/@kentico/kontent-delivery/_bundles/kontent-delivery.browser.umd.min.js"></script>
    <!-- Points to an external JavaScript file that will be added in the next step -->
    <script src="main.js" async defer></script>
</head>
<body>
     <!-- The HTML elements themselves have no value. Using JavaScript, you'll pull the content from your Kontent project into the elements -->
    <img id="banner">
    <h1 id="headline"></h1>
    <p id="bodytext"></p>
</body>
</html>

Adding JavaScript

Let's populate the <h1>, <img>, and <p> elements from the HTML file with content from your project. The headline whose value is "Hello Headless World!" will go into the <h1> element, the body_text whose value is the paragraph below the logo will go into the <p> element, and picture whose value is the URL will show in the <img> element. Now, create a file named main.js and insert the following code:

JavaScript
// Initializes the Delivery JS SDK
const Kk = window['kontentDelivery'];

// Tip: Change the project ID of the API call to yours to display your own content. Make sure the codenames still match.
const deliveryClient = new Kk.DeliveryClient({
  projectId: '8d20758c-d74c-4f59-ae04-ee928c0816b7'
});

// Retrieves the content item from your project
deliveryClient
  .item('hello_headless_world')
  .elementsParameter(['headline', 'body_text', 'picture'])
  .toPromise()
  .then(response => {
    processData(response)});

// Processes the retrieved data and displays it on the page.
function processData(response) {
    const bodyText = response.item.body_text.value;
    const headline = response.item.headline.value;
    const picture = response.item.picture.value[0].url;

    document.getElementById("bodytext").innerHTML = bodyText;
    document.getElementById("headline").append(headline);
    document.getElementById("banner").src = picture;
}
// Initializes the Delivery JS SDK
const Kk = window['kontentDelivery'];

// Tip: Change the project ID of the API call to yours to display your own content. Make sure the codenames still match.
const deliveryClient = new Kk.DeliveryClient({
  projectId: '8d20758c-d74c-4f59-ae04-ee928c0816b7'
});

// Retrieves the content item from your project
deliveryClient
  .item('hello_headless_world')
  .elementsParameter(['headline', 'body_text', 'picture'])
  .toPromise()
  .then(response => {
    processData(response)});

// Processes the retrieved data and displays it on the page.
function processData(response) {
    const bodyText = response.item.body_text.value;
    const headline = response.item.headline.value;
    const picture = response.item.picture.value[0].url;

    document.getElementById("bodytext").innerHTML = bodyText;
    document.getElementById("headline").append(headline);
    document.getElementById("banner").src = picture;
}

Finishing touches

When you combine the two code samples and introduce a small amount of CSS you can get something similar to the picture below.

Check the JS and HTML tabs in the codepen example below:

See the code example on https://codepen.io/KenticoKontent/pen/KKKBXXV

You can also view the final result at https://kontent.surge.sh, or tweak the source code in the codepen repository.