<!DOCTYPE html> <html> <head lang="en"> <meta charset="UTF-8"> <title></title> <script src="js/test.js" type="text/javascript" charset="utf-8"></script> </head> <body style="height: 3000px;"> <button onclick="func()">按钮</button> <input type="text" id="in" placeholder="请留下大名" my="我的"> <script type="text/javascript"> var jiinput = document.getElementById("in") console.log(jiinput.placeholder) console.log(jiinput.getAttribute("my")) function func(){ jiinput.placeholder='sunck is a good man' } </script> </body> </html>
JavaScript document的使用
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转载自www.cnblogs.com/jeco-li/p/10193212.html
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