Object.freeze = writable: false + Object.seal = writable: false + Object.preventExtensions + configable: false

<!DOCTYPE html>
<html>
    <head>
        <meta charset=utf-8>
    </head>
    <body>
    	
        <script type="text/javascript">
            const _objectFreeze = object => {
                // 补全代码
                // freeze = seal + writable:false
                Object.preventExtensions(object);
                for (let key in object) {
                    if (object.hasOwnProperty(key)) {
                        Object.defineProperty(object, key, {
                            writable: false,
                            configable: false
                        })
                    }
                }
                return object;
            }
        </script>
    </body>
</html>