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<!DOCTYPE html>
<html>
<head>
<title>Face</title>
<meta charset="UTF-8">
<script type="text/javascript">
//<![CDATA[
function myFunction(id) {
var e = document.getElementById(id);
if(e.style.visibility == "visible")
e.style.visibility = 'hidden';
else
e.style.visibility = 'visibile';
}
</script>
</head>
<body>
<div style="position: relative; visibility: visible;">
<img src="http://vignette4.wikia.nocookie.net/mrmen/images/5/52/Small.gif/revision/latest?cb=20100731114437"
alt="Pumpkins" id="Pum"/>
<button onclick="myFunction('Pum')">Face</button>
</div>
</body>
</html>
我试图让按钮显示/隐藏我的图像。我不明白我做错了什么。我得到一个错误,指出“TypeError:无法读取null属性'可见性'”。如何解决我的错误并使我的程序正常工作?我想要一个显示并隐藏我的图像的按钮