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Jack Chang
@simaQ
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Open GitHub
🇨🇳 Hangzhou, China
Profile age: over 11 years
Updated 2 days ago
736 followers • 57 following
Contacts
sima.zhang1990@gmail.com
http://simaQ.github.io/
Organizations
Profile Overview
Global
China
Beginner
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Advanced
Expert
Master
Elite
Legend
Global Rank
Legend 1
Persona
Influencer
#99,240
#81,997
#10,812
Explore Ranks
Top 3 Languages By Stars
All Languages
Top 5 Repositories
cssfun
223
24
updated over 9 years ago • age about 11 years
CSS
66.8%
HTML
33.2%
data-visualization-learning
36
3
updated over 9 years ago • age about 10 years
f2-canvas
21
3
updated almost 7 years ago • age almost 7 years
JavaScript
100.0%
learning-threejs-source-code
20
9
updated over 8 years ago • age over 8 years
JavaScript
69.5%
HTML
29.8%
CSS
0.4%
CoffeeScript
0.3%
backyard
6
0
updated about 5 years ago • age over 9 years
View all 8 repositories
Last Contributions
2023
VChart
~10 PRs
+23,318
-2,955
TypeScript
1,666
201
118
VRender
2 PRs
+21,814
-368
JavaScript
242
44
191
2021
G2
2 PRs
+42
-4
TypeScript
12,439
1,669
148
2020
G2
~153 PRs
+2,043
-435
TypeScript
12,439
1,669
148
G2Plot
~29 PRs
+149
-61
TypeScript
2,612
603
141
View all contributions
Latest Updates
15 Sep 2025
Followers Count:
737
736
01 Sep 2025
Followers Count:
735
737
18 Aug 2025
Followers Count:
736
735
04 Aug 2025
Followers Count:
737
736
05 Jan 2025
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