js对象动态赋值---融会贯通

	let obj={};
	let x='a';
    let y='b';
    obj[`${x}`]='aaaa';
    obj[`${y}`]='bbbb';
    console.log("obj:",obj)
	let config_2=`{"site":{"logo": "${x}","title": "${y}","floor": "${obj[x]"}}`;
	console.log("config_2:",config_2);