<!DOCTYPE?html>
<html>
<head>
<meta?charset="UTF-8">
<title></title>
</head>
<body>
<script>
var?person={};
Object.defineProperties(person,{
'username':{
value:'king',
writable:true,
enumerable:true,
configurable:true
},
age:{
value:12,
witable:false
}
});
console.log(Object.getOwnPropertyDescriptor(person,'username'));
document.write(Object.getOwnPropertyDescriptor(person,'username'));
</script>
</body>
</html>
為什么document.write()和console.log打印的結果不一樣？
慕數據5775487
2017-01-14 17:35:21
