题解 | #进制转换#

const rl = require("readline").createInterface({ input: process.stdin });
var iter = rl[Symbol.asyncIterator]();
const readline = async () => (await iter.next()).value;

void async function () {
    let str=await readline();
	//+和*会调用toNumber()
    console.log(+str)
    console.log(str*1)
	//Number()默认转换成10进制
    console.log(Number(str))
	//parseInt将16（第二参数）进制转化成10进制。
	//16进制转2进制 parseInt(str,16).toString(2)
    console.log(parseInt(str,16))
}()