[JS] function property 작성 방법

obj_function_property.js

let obj = {
	slow1 : function (x) {
		console.log(`Called with ${x}`);
		return x;
	},

	slow2(x) {
		console.log(`Called with ${x}`);
		return x;
	},

	slow3 : (x) => {
		console.log(`Called with ${x}`);
		return x;
	},
}

console.log(obj);

LGTM