JavaScript waitForever
Writing mochitests for new features in DevTools can be difficult and time-consuming. There are so many elements interacting in an async manner that I oftentimes find myself using the debugger to debug the debugger! In the case where it's unclear what interaction isn't working properly, I find myself going to a neat utility function: waitForever. By using this function, paired with await, I can interact with the page while a given test is running to find the problem!
The JavaScript
waitForever is a super small snippet:
function waitForever() {
return new Promise(r => {});
}
// Usage:
await waitForever();
The function uses a promise which never resolves, thus no additional statements are triggered while also not locking up the browser. From there I can click around and explore elements to find what I've messed up in my test.
Utility functions like these make web development much easier and more enjoyable. Add this one to your toolbox!
![Create a CSS Flipping Animation]()
CSS animations are a lot of fun; the beauty of them is that through many simple properties, you can create anything from an elegant fade in to a WTF-Pixar-would-be-proud effect. One CSS effect somewhere in between is the CSS flip effect, whereby there's...
![Create a Sheen Logo Effect with CSS]()
I was inspired when I first saw Addy Osmani's original ShineTime blog post. The hover sheen effect is simple but awesome. When I started my blog redesign, I really wanted to use a sheen effect with my logo. Using two HTML elements and...
Thanks for the tip David! I’ll keep that in mind when working on mochi tests. Have you found any other uses for this snippet?