curl is one of those great utilities that’s been around seemingly forever and has endless use cases. These days I find myself using curl to batch download files and test APIs. Sometimes my testing leads me to using different HTTP headers in my requests.
To add a header to a curl request, use the -H flag:
curl -X 'GET' \ 'https://nft.api.cx.metamask.io/collections?chainId=1' \ -H 'accept: application/json' \ -H 'Version: 1'
You can add multiple headers with multiple -H uses. Header format is usually [key]: [value].
HTML5’s window.postMessage API
One of the little known HTML5 APIs is the window.postMessage API.
window.postMessageallows for sending data messages between two windows/frames across domains. Essentially window.postMessage acts as cross-domain AJAX without the server shims. Let’s take a look at howwindow.postMessageworks and how you…
Digg-Style Dynamic Share Widget Using MooTools
I’ve always seen Digg as a very progressive website. Digg uses experimental, ajaxified methods for comments and mission-critical functions. One nice touch Digg has added to their website is their hover share widget. Here’s how to implement that functionality on your site…
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