Setting both the width and height of an image will still maintain the aspect ratio, so the code below will generate the same output as the previous example and possibly not the exact size you expect. You can resize images by adding a parameter to the image url that sets a width, but will also maintain aspect ratio.
Now you have the structure ready, it's time to experiment with Contentful's manipulation features. This results in a page of large images, in terms of dimensions and file size. Var imageFile = document.createElement("img") Var imageDiv = document.createElement("div") Var imagesDiv = document.getElementById('images') Inside the forEach loop, create an image element for each asset, div elements to contain them, and populate the images div with them. Note: This step would be unnecessary if you are using the client library directly outside of a browser. The example below uses browserify (webpack is also usable) to package the client library for use in a browser. Var imageURL = 'https:' + Ĭreate a skeleton index.html file to display the images. Read how to setup and authenticate a JavaScript app, and then fetch the assets from the space, constructing an URL for the image file. To make it clearer we will use a small JavaScript application to show Contentful's image features and how image assets relate to content entries. Typically you retrieve images from the context of one or more entries, or by assets directly. If you switch to the Media tab you will see the images in the space, note that most of them are large, requesting and loading each of these into your app will be a significant network and memory hit, ideally you want to request images at the size you need them. To best understand how to manipulate images it is recommended that you create a space (may result in additional charges if the free spaces available in your plan are exhausted.) filled with content from the 'Photo Gallery' example space. Images exceeding the size limit are treated as assets and the manipulation features offered by the API are not applicable. Note: As per the Technical Limits specifications, size of an image uploaded must not exceed 20MB. Contentful has a separate Images API that helps you add and retrieve image files in spaces, but also offers manipulation features to make images look how you want.
Images are a powerful way of explaining concepts, attracting a reader's attention and creating an impact.
0 kommentar(er)
