npm package discovery and stats viewer.

Discover Tips

  • General search

    [free text search, go nuts!]

  • Package details

    pkg:[package-name]

  • User packages

    @[username]

Sponsor

Optimize Toolset

I’ve always been into building performant and accessible sites, but lately I’ve been taking it extremely seriously. So much so that I’ve been building a tool to help me optimize and monitor the sites that I build to make sure that I’m making an attempt to offer the best experience to those who visit them. If you’re into performant, accessible and SEO friendly sites, you might like it too! You can check it out at Optimize Toolset.

About

Hi, 👋, I’m Ryan Hefner  and I built this site for me, and you! The goal of this site was to provide an easy way for me to check the stats on my npm packages, both for prioritizing issues and updates, and to give me a little kick in the pants to keep up on stuff.

As I was building it, I realized that I was actually using the tool to build the tool, and figured I might as well put this out there and hopefully others will find it to be a fast and useful way to search and browse npm packages as I have.

If you’re interested in other things I’m working on, follow me on Twitter or check out the open source projects I’ve been publishing on GitHub.

I am also working on a Twitter bot for this site to tweet the most popular, newest, random packages from npm. Please follow that account now and it will start sending out packages soon–ish.

Open Software & Tools

This site wouldn’t be possible without the immense generosity and tireless efforts from the people who make contributions to the world and share their work via open source initiatives. Thank you 🙏

© 2024 – Pkg Stats / Ryan Hefner

@morr/image-promise

v7.0.2

Published

Load one or more images, return a promise. Only 0.4KB, for the browser, no dependencies.

Downloads

2,065

Readme

image-promise

Load one or more images, return a promise. Only 0.5KB, for the browser, no dependencies.

It can be used in two ways:

  • pass a URL: it will generate an <img> and wait for it to load:

    loadImage('img.jpg').then(/* It's loaded! */)
  • pass an <img>: it will wait for it to load:

    const img = document.querySelector('img.my-image');
    loadImage(img).then(/* It's loaded! */)
  • pass an array of URLs and/or <img>s, wait for them to load:

    const img = document.querySelector('img.my-image');
    loadImage([img, 'loading.gif']).then(/* Both are loaded! */)

Install

You can download the standalone bundle

Or use npm:

npm install image-promise
// This module is only offered as a ES Module
import loadImage from 'image-promise';

Usage

One image

loadImage(image) will return a Promise that resolves when the image load, or fails when the image

const image = 'cat.jpg';
// const image = $('img')[0]; // it can also be an <img> element

loadImage(image)
.then(function (img) {
	ctx.drawImage(img, 0, 0, 10, 10);
})
.catch(function () {
	console.error('Image failed to load :(');
});

Multiple images

image-promise can load multiple images at a time

const images = ['cat.jpg', 'dog.jpg'];
// const images = $('img'); // it can also be a jQuery object
// const images = document.querySelectorAll('img'); // or a NodeList

loadImage(images)
.then(function (allImgs) {
	console.log(allImgs.length, 'images loaded!', allImgs);
})
.catch(function (err) {
	console.error('One or more images have failed to load :(');
	console.error(err.errored);
	console.info('But these loaded fine:');
	console.info(err.loaded);
});

Set custom attributes

loadImage(image, attributes) lets you pass as the second argument an object of attributes you want to assign to the image element before it starts loading.

This is useful for example when you need CORS enabled image, where you need to set the attribute crossorigin="anonymous" before the image starts downloading.

const image = 'https://catpics.com/cat.jpg';

loadImage(image, { crossorigin: 'anonymous' })
.then(function (img) {
	ctx.drawImage(img, 0, 0, 10, 10);

	// now you can do this
	canvas.toDataURL('image/png')
})
.catch(function () {
	console.error('Image failed to load :(');
});

Dependencies

None! But you need to polyfill window.Promise in IE11 and lower.

License

MIT © Federico Brigante