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# ืžืฉื™ืžื”: ื—ืงืจ ืžืžืฉืง Canvas API

## ืžื˜ืจื•ืช ืœืžื™ื“ื”

ืขืœ ื™ื“ื™ ื”ืฉืœืžืช ืžืฉื™ืžื” ื–ื•, ืชื“ื’ื™ืžื• ืืช ื”ื‘ื ืชื›ื ื‘ื™ืกื•ื“ื•ืช ืžืžืฉืง Canvas API ื•ืชื™ื™ืฉืžื• ืคืชืจื•ืŸ ื‘ืขื™ื•ืช ื™ืฆื™ืจืชื™ ืœื‘ื ื™ื™ืช ืืœืžื ื˜ื™ื ื—ื–ื•ืชื™ื™ื ื‘ืืžืฆืขื•ืช JavaScript ื•-HTML5 Canvas.

## ื”ื•ืจืื•ืช

ื‘ื—ืจื• ื”ื™ื‘ื˜ ืื—ื“ ืฉืœ ืžืžืฉืง Canvas API ืฉืžืขื ื™ื™ืŸ ืืชื›ื ื•ืฆืจื• ืกื‘ื™ื‘ื• ืคืจื•ื™ืงื˜ ื—ื–ื•ืชื™ ืžืจืชืง. ืžืฉื™ืžื” ื–ื• ืžืขื•ื“ื“ืช ืืชื›ื ืœื”ืชื ืกื•ืช ื‘ื™ื›ื•ืœื•ืช ื”ืฆื™ื•ืจ ืฉืœืžื“ืชื ืชื•ืš ื›ื“ื™ ื™ืฆื™ืจืช ืžืฉื”ื• ื™ื™ื—ื•ื“ื™ ืžืฉืœื›ื.

### ืจืขื™ื•ื ื•ืช ืœืคืจื•ื™ืงื˜ื™ื ืœื”ืฉืจืื”

**ื“ืคื•ืกื™ื ื’ื™ืื•ืžื˜ืจื™ื™ื:**
- **ืฆืจื•** ื’ืœืงืกื™ื” ืฉืœ ื›ื•ื›ื‘ื™ื ืžื ืฆื ืฆื™ื ื‘ืื ื™ืžืฆื™ื” ื‘ืืžืฆืขื•ืช ืžื™ืงื•ื ืืงืจืื™
- **ืขืฆื‘ื•** ื˜ืงืกื˜ื•ืจื” ืžืขื ื™ื™ื ืช ื‘ืืžืฆืขื•ืช ืฆื•ืจื•ืช ื’ื™ืื•ืžื˜ืจื™ื•ืช ื—ื•ื–ืจื•ืช
- **ื‘ื ื•** ืืคืงื˜ ืงืœื™ื™ื“ื•ืกืงื•ืค ืขื ื“ืคื•ืกื™ื ืฆื‘ืขื•ื ื™ื™ื ืžืกืชื•ื‘ื‘ื™ื

**ืืœืžื ื˜ื™ื ืื™ื ื˜ืจืืงื˜ื™ื‘ื™ื™ื:**
- **ืคืชื—ื•** ื›ืœื™ ืฆื™ื•ืจ ืฉืžื’ื™ื‘ ืœืชื ื•ืขื•ืช ืขื›ื‘ืจ
- **ื™ื™ืฉืžื•** ืฆื•ืจื•ืช ืฉืžืฉื ื•ืช ืฆื‘ืข ื‘ืœื—ื™ืฆื”
- **ืขืฆื‘ื•** ืœื•ืœืืช ืื ื™ืžืฆื™ื” ืคืฉื•ื˜ื” ืขื ืืœืžื ื˜ื™ื ื ืขื™ื

**ื’ืจืคื™ืงื” ื”ืงืฉื•ืจื” ืœืžืฉื—ืงื™ื:**
- **ืฆืจื•** ืจืงืข ืžืชื’ืœื’ืœ ืœืžืฉื—ืง ื—ืœืœ
- **ื‘ื ื•** ืืคืงื˜ื™ื ื—ืœืงื™ืงื™ื™ื ื›ืžื• ืคื™ืฆื•ืฆื™ื ืื• ืงืกืžื™ื
- **ืฆืจื•** ื“ืžื•ื™ื•ืช ืื ื™ืžืฆื™ื” ืขื ืžืกืคืจ ืคืจื™ื™ืžื™ื

### ื”ื ื—ื™ื•ืช ืคื™ืชื•ื—

**ืžื—ืงืจ ื•ื”ืฉืจืื”:**
- **ืขื™ื™ื ื•** ื‘-CodePen ืœื“ื•ื’ืžืื•ืช ื™ืฆื™ืจืชื™ื•ืช ืฉืœ Canvas (ืœื”ืฉืจืื”, ืœื ืœื”ืขืชืงื”)
- **ืœืžื“ื•** ืืช [ืชื™ืขื•ื“ Canvas API](https://developer.mozilla.org/docs/Web/API/Canvas_API) ืœืžื™ื“ืข ื ื•ืกืฃ ืขืœ ืฉื™ื˜ื•ืช
- **ื”ืชื ืกื•** ื‘ืคื•ื ืงืฆื™ื•ืช ืฆื™ื•ืจ ืฉื•ื ื•ืช, ืฆื‘ืขื™ื ื•ืื ื™ืžืฆื™ื•ืช

**ื“ืจื™ืฉื•ืช ื˜ื›ื ื™ื•ืช:**
- **ื”ืฉืชืžืฉื•** ื‘ื”ื’ื“ืจืช Canvas ื ื›ื•ื ื” ืขื `getContext('2d')`
- **ื”ื•ืกื™ืคื•** ื”ืขืจื•ืช ืžืฉืžืขื•ืชื™ื•ืช ืฉืžืกื‘ื™ืจื•ืช ืืช ื”ื’ื™ืฉื” ืฉืœื›ื
- **ื‘ื“ืงื•** ืืช ื”ืงื•ื“ ืฉืœื›ื ื”ื™ื˜ื‘ ื›ื“ื™ ืœื•ื•ื“ื ืฉื”ื•ื ืคื•ืขืœ ืœืœื ืฉื’ื™ืื•ืช
- **ื™ื™ืฉืžื•** ืชื—ื‘ื™ืจ ืžื•ื“ืจื ื™ ืฉืœ JavaScript (const/let, ืคื•ื ืงืฆื™ื•ืช ื—ืฅ)

**ื‘ื™ื˜ื•ื™ ื™ืฆื™ืจืชื™:**
- **ื”ืชืžืงื“ื•** ื‘ืชื›ื•ื ื” ืื—ืช ืฉืœ Canvas API ืืš ื—ืงืจื• ืื•ืชื” ืœืขื•ืžืง
- **ื”ื•ืกื™ืคื•** ื˜ื•ื•ื™ืกื˜ ื™ืฆื™ืจืชื™ ืžืฉืœื›ื ื›ื“ื™ ืœื”ืคื•ืš ืืช ื”ืคืจื•ื™ืงื˜ ืœืื™ืฉื™
- **ืฉืงืœื•** ื›ื™ืฆื“ ื”ื™ืฆื™ืจื” ืฉืœื›ื ื™ื›ื•ืœื” ืœื”ื™ื•ืช ื—ืœืง ืžื™ื™ืฉื•ื ืื• ืžืฉื—ืง ื’ื“ื•ืœ ื™ื•ืชืจ

### ื”ื ื—ื™ื•ืช ื”ื’ืฉื”

ื”ื’ื™ืฉื• ืืช ื”ืคืจื•ื™ืงื˜ ื”ืžื•ืฉืœื ืฉืœื›ื ื›ืงื•ื‘ืฅ HTML ื™ื—ื™ื“ ืขื CSS ื•-JavaScript ืžื•ื˜ืžืขื™ื, ืื• ื›ืงื‘ืฆื™ื ื ืคืจื“ื™ื ื‘ืชื™ืงื™ื™ื”. ื›ืœืœื• ื”ืขืจื” ืงืฆืจื” ืฉืžืกื‘ื™ืจื” ืืช ื”ื‘ื—ื™ืจื•ืช ื”ื™ืฆื™ืจืชื™ื•ืช ืฉืœื›ื ื•ืืช ืชื›ื•ื ื•ืช Canvas API ืฉื—ืงืจืชื.

## ืงืจื™ื˜ืจื™ื•ื ื™ื ืœื”ืขืจื›ื”

| ืงืจื™ื˜ืจื™ื•ืŸ | ืžืฆื˜ื™ื™ืŸ | ืžืกืคืง | ื“ื•ืจืฉ ืฉื™ืคื•ืจ |
|----------|---------|-------|-------------|
| **ื™ื™ืฉื•ื ื˜ื›ื ื™** | ืฉื™ืžื•ืฉ ื™ืฆื™ืจืชื™ ื‘ืžืžืฉืง Canvas ืขื ืžืกืคืจ ืชื›ื•ื ื•ืช, ื”ืงื•ื“ ืคื•ืขืœ ื‘ืฆื•ืจื” ืžื•ืฉืœืžืช, ืชื—ื‘ื™ืจ JavaScript ืžื•ื“ืจื ื™ ืžื™ื•ืฉื | ืฉื™ืžื•ืฉ ื ื›ื•ืŸ ื‘ืžืžืฉืง Canvas, ื”ืงื•ื“ ืคื•ืขืœ ืขื ื‘ืขื™ื•ืช ืžื™ื ื•ืจื™ื•ืช, ื™ื™ืฉื•ื ื‘ืกื™ืกื™ | ื ื™ืกื™ื•ืŸ ืฉื™ืžื•ืฉ ื‘ืžืžืฉืง Canvas ืืš ื”ืงื•ื“ ืžื›ื™ืœ ืฉื’ื™ืื•ืช ืื• ืœื ืคื•ืขืœ |
| **ื™ืฆื™ืจืชื™ื•ืช ื•ืขื™ืฆื•ื‘** | ืจืขื™ื•ืŸ ืžืงื•ืจื™ ืžืื•ื“ ืขื ืžืฉื™ื›ื” ื—ื–ื•ืชื™ืช ืžืœื•ื˜ืฉืช, ืžืจืื” ื—ืงืจ ืžืขืžื™ืง ืฉืœ ืชื›ื•ื ืช Canvas ืฉื ื‘ื—ืจื” | ืฉื™ืžื•ืฉ ื˜ื•ื‘ ื‘ืชื›ื•ื ื•ืช Canvas ืขื ื›ืžื” ืืœืžื ื˜ื™ื ื™ืฆื™ืจืชื™ื™ื, ืชื•ืฆืื” ื—ื–ื•ืชื™ืช ืžื•ืฆืงื” | ื™ื™ืฉื•ื ื‘ืกื™ืกื™ ืขื ืžื™ื ื™ืžื•ื ื™ืฆื™ืจืชื™ื•ืช ืื• ืžืฉื™ื›ื” ื—ื–ื•ืชื™ืช |
| **ืื™ื›ื•ืช ื”ืงื•ื“** | ืงื•ื“ ืžืื•ืจื’ืŸ ื”ื™ื˜ื‘, ืขื ื”ืขืจื•ืช ืœืคื™ ืžื™ื˜ื‘ ื”ืคืจืงื˜ื™ืงื•ืช, ืืœื’ื•ืจื™ืชืžื™ื ื™ืขื™ืœื™ื | ืงื•ื“ ื ืงื™ ืขื ื›ืžื” ื”ืขืจื•ืช, ืขื•ืงื‘ ืื—ืจื™ ืกื˜ื ื“ืจื˜ื™ื ื‘ืกื™ืกื™ื™ื | ืงื•ื“ ื—ืกืจ ืืจื’ื•ืŸ, ืžื™ื ื™ืžื•ื ื”ืขืจื•ืช, ื™ื™ืฉื•ื ืœื ื™ืขื™ืœ |

## ืฉืืœื•ืช ืจืคืœืงืฆื™ื”

ืœืื—ืจ ื”ืฉืœืžืช ื”ืคืจื•ื™ืงื˜, ืฉืงืœื• ืืช ื”ืฉืืœื•ืช ื”ื‘ืื•ืช:

1. **ืื™ื–ื• ืชื›ื•ื ื” ืฉืœ Canvas API ื‘ื—ืจืชื ื•ืœืžื”?**
2. **ืื™ืœื• ืืชื’ืจื™ื ื ืชืงืœืชื ื‘ื”ื ื‘ืžื”ืœืš ื‘ื ื™ื™ืช ื”ืคืจื•ื™ืงื˜?**
3. **ื›ื™ืฆื“ ืชื•ื›ืœื• ืœื”ืจื—ื™ื‘ ืืช ื”ืคืจื•ื™ืงื˜ ืœื™ื™ืฉื•ื ืื• ืžืฉื—ืง ื’ื“ื•ืœ ื™ื•ืชืจ?**
4. **ืื™ืœื• ืชื›ื•ื ื•ืช ื ื•ืกืคื•ืช ืฉืœ Canvas API ื”ื™ื™ืชื ืจื•ืฆื™ื ืœื—ืงื•ืจ ื‘ื”ืžืฉืš?**

> ๐Ÿ’ก **ื˜ื™ืค ืžืงืฆื•ืขื™**: ื”ืชื—ื™ืœื• ื‘ืคืฉื˜ื•ืช ื•ื”ื•ืกื™ืคื• ืžื•ืจื›ื‘ื•ืช ื‘ื”ื“ืจื’ื”. ืคืจื•ื™ืงื˜ ืคืฉื•ื˜ ื•ืžื‘ื•ืฆืข ื”ื™ื˜ื‘ ืขื“ื™ืฃ ืขืœ ืคืจื•ื™ืงื˜ ืฉืืคืชื ื™ ืžื“ื™ ืฉืื™ื ื• ืคื•ืขืœ ื›ืจืื•ื™!

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**ื”ืฆื”ืจืช ืื—ืจื™ื•ืช**:  
ืžืกืžืš ื–ื” ืชื•ืจื’ื ื‘ืืžืฆืขื•ืช ืฉื™ืจื•ืช ืชืจื’ื•ื ืžื‘ื•ืกืก ื‘ื™ื ื” ืžืœืื›ื•ืชื™ืช [Co-op Translator](https://github.com/Azure/co-op-translator). ืœืžืจื•ืช ืฉืื ื• ืฉื•ืืคื™ื ืœื“ื™ื•ืง, ื™ืฉ ืœืงื—ืช ื‘ื—ืฉื‘ื•ืŸ ืฉืชืจื’ื•ืžื™ื ืื•ื˜ื•ืžื˜ื™ื™ื ืขืฉื•ื™ื™ื ืœื”ื›ื™ืœ ืฉื’ื™ืื•ืช ืื• ืื™ ื“ื™ื•ืงื™ื. ื”ืžืกืžืš ื”ืžืงื•ืจื™ ื‘ืฉืคืชื• ื”ืžืงื•ืจื™ืช ืฆืจื™ืš ืœื”ื™ื—ืฉื‘ ื›ืžืงื•ืจ ืกืžื›ื•ืชื™. ืœืžื™ื“ืข ืงืจื™ื˜ื™, ืžื•ืžืœืฅ ืœื”ืฉืชืžืฉ ื‘ืชืจื’ื•ื ืžืงืฆื•ืขื™ ืขืœ ื™ื“ื™ ืื“ื. ืื ื• ืœื ื ื•ืฉืื™ื ื‘ืื—ืจื™ื•ืช ืœืื™ ื”ื‘ื ื•ืช ืื• ืœืคืจืฉื ื•ื™ื•ืช ืฉื’ื•ื™ื•ืช ื”ื ื•ื‘ืขื•ืช ืžืฉื™ืžื•ืฉ ื‘ืชืจื’ื•ื ื–ื”.