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Improved tooltip behavior
importance: 5
Write JavaScript that shows a tooltip over an element with the attribute data-tooltip. The value of this attribute should become the tooltip text.
That’s like the task Comportement info-bulle, but here the annotated elements can be nested. The most deeply nested tooltip is shown.
Only one tooltip may show up at the same time.
For instance:
<div data-tooltip="Here – is the house interior" id="house">
<div data-tooltip="Here – is the roof" id="roof"></div>
...
<a href="https://en.wikipedia.org/wiki/The_Three_Little_Pigs" data-tooltip="Read on…">Hover over me</a>
</div>The result in iframe: