<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>044</title>
</head>
<body>
</body>
<script type="text/javascript">
(function () {
var data = {};
Object.defineProperty(data, 'type', {
value: 'primary',
enumerable: true
});
console.log(data.type);
data.type = 'secondary';
console.log(data.type);
Object.defineProperty(data, 'id',{
value: 1,
writable: true
});
console.log(data.id);
data.id = 300;
console.log(data.id);
for(prop in data){
console.log(prop);
}
})();
(function () {
var data = {};
var group = 'history';
Object.defineProperty(data, "category", {
get: function(){return group;},
set: function(value) {group = value;},
enumerable : true,
configurable: true
});
console.log(data.category);
group = 'math';
console.log(data.category);
data.category = 'spanish';
console.log(data.category);
console.log(group);
})();
</script>
</html>
