HackerReposA FIELD GUIDE TO OPEN SOURCE
ProSponsor the shelf♧ 0
← Back to top all-time
chartjs
Chart.js
JavaScript2013–2022
chartjs / Chart.js

Chart.js

Simple HTML5 Charts using the <canvas> tag

Web Development
Explore on GitHubRead Hacker News discussions
22Distinct people
31Mentions
0Explicit recommenders
67.8KGitHub stars
REPOSITORY AT A GLANCE

What to know before exploring

What it is

Simple HTML5 Charts using the <canvas> tag

GitHub

Where it is used

No documented product use was verified in the last source check.

What people are saying

No recommendation phrase was found in the indexed comments.

No classified warning is attached to this page. Read the discussions before treating silence as approval.

Also in these discussions

No other repository is repeatedly linked in the same discussions.

This week on Hacker News

Nov 8–Nov 15 UTC · Direct repository links and separately labeled related project stories. Indexed through 11/15/2026, 1:57:11 AM UTC.

No direct repository links were found in the indexed HN discussions over the past seven days. Older discussions are available below.

Mentions over time

HN mentions by year31 dated mentions

Observed mentions: 2013-03-18 06:34:54 UTC to 2022-03-04 13:38:32 UTC.

02468102013-01-01 00:00:00 UTC to 2014-01-01 00:00:00 UTC (exclusive): 9 mentions; 1 submissions, 8 comments20132014-01-01 00:00:00 UTC to 2015-01-01 00:00:00 UTC (exclusive): 4 mentions; 0 submissions, 4 comments2015-01-01 00:00:00 UTC to 2016-01-01 00:00:00 UTC (exclusive): 2 mentions; 1 submissions, 1 comments2016-01-01 00:00:00 UTC to 2017-01-01 00:00:00 UTC (exclusive): 7 mentions; 0 submissions, 7 comments2017-01-01 00:00:00 UTC to 2018-01-01 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments20172018-01-01 00:00:00 UTC to 2019-01-01 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2019-01-01 00:00:00 UTC to 2020-01-01 00:00:00 UTC (exclusive): 2 mentions; 1 submissions, 1 comments2020-01-01 00:00:00 UTC to 2021-01-01 00:00:00 UTC (exclusive): 4 mentions; 0 submissions, 4 comments2021-01-01 00:00:00 UTC to 2022-01-01 00:00:00 UTC (exclusive): 2 mentions; 2 submissions, 0 comments2022-01-01 00:00:00 UTC to 2023-01-01 00:00:00 UTC (exclusive): 1 mentions; 0 submissions, 1 comments2022

Counts come from the repository’s dated source evidence. Index cutoff: 2026-11-02 08:16:59 UTC.

View mention counts and date ranges
UTC ranges include their start and exclude their end. Select a period to filter the source evidence.
PeriodStart (UTC)End (exclusive, UTC)MentionsSubmissionsComments
20132013-01-01 00:00:00 UTC2014-01-01 00:00:00 UTC918
20142014-01-01 00:00:00 UTC2015-01-01 00:00:00 UTC404
20152015-01-01 00:00:00 UTC2016-01-01 00:00:00 UTC211
20162016-01-01 00:00:00 UTC2017-01-01 00:00:00 UTC707
20172017-01-01 00:00:00 UTC2018-01-01 00:00:00 UTC000
20182018-01-01 00:00:00 UTC2019-01-01 00:00:00 UTC000
20192019-01-01 00:00:00 UTC2020-01-01 00:00:00 UTC211
20202020-01-01 00:00:00 UTC2021-01-01 00:00:00 UTC404
20212021-01-01 00:00:00 UTC2022-01-01 00:00:00 UTC220
20222022-01-01 00:00:00 UTC2023-01-01 00:00:00 UTC101

What Hacker News says

4 sources
rikroots·Sep 24, 2020
First: chart.js[1] is an excellent library. If people need to add chart infographics to their website I strongly recommend they use a dedicated charting tool (like chart.js) rather than my library. Like you, I've had to do a lot of coding and experimentation to get responsiveness working the way I think it should work. Much of it runs off the idea of drawing everything to a hidden canvas and then copying that canvas's contents over to the displayed canvas as the last step in the display cycle. I tried to mimic this functionality on the CSS object-fit property[2]. If you're interested in the code, you can find it here - https://scrawl-v8.rikweb.org.uk/docs/source/factory/cell.htm... The other thing I've done is to introduce relative positioning for drawing stuff on the canvas. The native Canvas API drawing functions expects coordinates etc
Read the rest
to be in absolute value pixels; my library allows coders to define positions and dimensions in String percentage values which will update (via dirty flags) each time a change in the canvas dimensions is detected. Caveat: my library has not been tested (as far as I'm aware) across a wide variety of browsers and devices. I expect there will be plenty of improvements to be made once that happens. [1] - https://github.com/chartjs/Chart.js [2] - https://developer.mozilla.org/en-US/docs/Web/CSS/object-fit
In Bleeding-edge tech will kill your startup
etimberg·May 18, 2020
I've been maintaining Chart.js [0] since 2014. I only work on it during my free time (evenings and weekends) to avoid any problems with my day job. Conflict with my day job is also one of the reasons why I don't take donations. There is some benefit to that though because it allows me to take a day/week/month off if I need it without feeling guilty. Once there is money involved, there are a lot more expectations and I think I would have a harder time putting it down. 0: https://github.com/chartjs/Chart.js/
In Ask HN: Dear open source devs how do you sustain yourself

MAKE YOURSELF AT HOME

A few shortcuts

/
Search the collection
?
Open this guide
Esc
Close dialogs and navigation

Your saved repositories and interests stay in this browser.