25 lines
677 B
Markdown
25 lines
677 B
Markdown
importance: 5
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---
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# Improved tooltip behavior
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Write JavaScript that shows a tooltip over an element with the attribute `data-tooltip`.
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That's like the task <info:task/behavior-tooltip>, but here the annotated elements can be nested. The most deeply nested tooltip is shown.
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For instance:
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```html
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<div data-tooltip="Here – is the house interior" id="house">
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<div data-tooltip="Here – is the roof" id="roof"></div>
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...
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<a href="https://en.wikipedia.org/wiki/The_Three_Little_Pigs" data-tooltip="Read on…">Hover over me</a>
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</div>
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```
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The result in iframe:
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[iframe src="solution" height=300 border=1]
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P.S. Hint: only one tooltip may show up at the same time.
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