1. Open Nvu
2. Hand code a javascript that loads an image from Internet based on
the DOM model.
3. Use window.onload to load the image.
4. Use a button to load the image. Try how onclick works.
Hint: The javascript code should be enclosed by script tags.
Reference: DOM (Document Object Model)
1. Source code
2.開啟瀏覽器
3. 點選按鈕(click)
4. 再多按幾次
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