js正则的变量怎么用逻辑或连接起来?

Question

let reg2 = /^([0-9])-([1-9])$/
let reg3 = /^([0-9],)+[0-9]$/
let reg4 = /^[0-9]$/
let reg5 = reg2 | reg3 | reg4
let reg = new RegExp(`${reg5}`)
let score = '1,2'
console.log('eg.test(score)', reg.test(score));
if (reg.test(score) && score.replace(reg2, (_, $1,$2) => $1 < $2)) {
    console.log('分数格式合规');
}

上面应该是合规才对的

Answer 1

错在这里

let reg5 = reg2 | reg3 | reg4

应该是

let reg5 = `${reg2}|${reg3}|${reg4}`