从第三个字节开始因此

const msg = "0F04ABABABAB";
const msg1 = "0F04ABABABAB10001FF";
function solution(msg, tags) {const tagObj = {};for (let i = 0; i + 3 < msg.length; ) {const tag = parseInt(msg.slice(i, i + 2), 16);const len = parseInt(msg.slice(i + 2, i + 4), 16);const valueOffset = Math.floor((i + 5) / 2);console.log(tag);console.log(len);console.log(valueOffset);i = i + 3 + len * 2;// 如果结束位置越界则报文不完整，需要舍弃if (i >= msg.length) break;tagObj[tag] = [len, valueOffset];}const res = tags.map((tag) => {if (tagObj[tag]) {const [len, valueOffset] = tagObj[tag];return `${len} ${valueOffset}`;} else {return `0 0`;}});return res.join("\n");
}console.log(solution(msg, [15]));
/* 
0F04ABABABAB
1
15
=>
4 20F04ABABABAB10001FF
2
15
17
=>
4 2
0 0*/