javascript获取select的value值

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<!DOCTYPE html><html><head><meta charset="UTF-8"><title>javascript获取select选项的value</title></head><body><select id="fruit"><option value="苹果">苹果</option><option value="香蕉">香蕉</option><option value="李子">李子</option></select><button type="submit" onclick="check()">查看选择</button></body><!-- 需要引入jquery--><script src="http://code.jquery.com/jquery-3.2.1.js" integrity="sha256-DZAnKJ/6XZ9si04Hgrsxu/8s717jcIzLy3oi35EouyE=" crossorigin="anonymous"></script><script type="text/javascript">function check() {var options = $("#fruit option:selected");var choosefruit = options.val();alert("你选择的水果是:" + choosefruit);}</script></html>

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