Image Templating with Javascript

The Image field allows content writers to upload an image that can be configured with size constraints and responsive image views.

Retrieve the image url

The easiest way to integrate an image is to retrieve and add the image url to image elements.

Here is an example that retrieves the url from an Image field with the API ID of illustration.

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document.data.illustration.url

Get an image view

It's easy to get the url for an image and any of its views. The following shows how to retrieve the image url for the main view as well as its tablet and mobile views. In this case, the Image field has an API ID of responsive_image.

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const image = document.data.responsive_image

const mainUrl = image.url // main image
const tabletUrl = image.tablet.url // tablet
const mobileUrl = image.mobile.url // mobile

Get the image Alt Text

If you added an alt text value to your image, you retrieve and apply it as shown below. Here the Image field has the API ID of image.

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const image = document.data.image

const imageUrl = image.url // url
const imageAlt = image.alt // alt

The following shows how to retrieve the alt text for a responsive image view. Note that the alt text will be the same for all views.

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const mobileView = document.data.image.mobile

const mobileUrl = mobileView.url // mobile image url
const mobileAlt = mobileView.alt // mobile image alt

Get the image Width & Height

Here’s how to retrieve the main image’s width or height. Here the Image field has the API ID of featured_image.

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const image = document.data.featured_image

const imageWidth = image.dimensions.width // image width
const imageHeight = image.dimensions.height // image height

Here is how to retrieve the width and height for a responsive image view.

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const mobileImage = document.data.featured_image.mobile;

const mobileWidth = mobileImage.dimensions.width // mobile image width
const mobileHeight = mobileImage.dimensions.height // mobile image height