代码示例：
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title></title>
</head>
<body>
<script>
var obj ={a:99,b:66,c:"你好"}
console.log(obj)
// 增，改
// obj.b = 33
// obj["c"] =44
// console.log(obj)
// 删
// delete obj.b
// delete obj["c"]
// console.log(obj)
// 查
console.log(obj.a)
console.log(obj["c"])
</script>
</body>
</html>
标签：obj,log,示例,对象,数据类型,console,delete From： https://www.cnblogs.com/xu529/p/17006438.html