<html><head><script>function showDetails(animal) { var animalType = animal.getAttribute("data-animal-type"); alert(animal.innerHTML + "是" + animalType + "。");}</script></head><body><h1>物种</h1><p>单击一个物种以查看它是什么类型：</p><ul> <li onclick="showDetails(this)" id="owl" data-animal-type="鸟">猫头鹰</li> <li onclick="showDetails(this)" id="salmon" data-animal-type="鱼">鲑鱼</li> <li onclick="showDetails(this)" id="tarantula" data-animal-type="蜘蛛">狼蛛</li> </ul></body></html>