判断对象中是否存在某个属性
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<html>
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<title>JavaScript 对象</title>
<link rel="stylesheet" href="">
</head>
<body>
<script type="text/javascript">
var xiaoming={
name:‘小小‘
};
console.log(xiaoming.hasOwnProperty(‘name‘));
console.log(xiaoming.hasOwnProperty(‘age‘));
</script>
</body>
</html>本文出自 “素颜” 博客，请务必保留此出处http://suyanzhu.blog.51cto.com/8050189/1902680
原文：http://suyanzhu.blog.51cto.com/8050189/1902680