js常用正则（2）

res(a, b, str) {   //数字加英文
            let re = `^\w{${a},${b}}$`
            let reg = new RegExp(re);
            let status = !reg.test(str)
            return status
        },
        res2(a, b, str) {  //中英文字符
            let re = `^[u4e00-u9fa5_a-zA-Z]{${a},${b}}$`
            let reg = new RegExp(re);
            let status = !reg.test(str)
            return status
        },
        res3(a, b, str) {  //中文字符
            let re = `^[u4e00-u9fa5]{${a},${b}}$`
            let reg = new RegExp(re);
            let status = !reg.test(str)
            return status
        },
        res4(a, b, str) {  //数字
            let re = `^[0-9]{${a},${b}}$`
            let reg = new RegExp(re);
            let status = !reg.test(str)
            return status
        },
        res5(str) {  //数字和特殊符号
            let reg = /^[0-9-()]*$/
            let status = !reg.test(str)
            return status
        },
        res6(a, b, str) {  //中英文数字字符
            let re = `^[u4e00-u9fa5_a-zA-Z0-9]{${a},${b}}$`
            let reg = new RegExp(re);
            let status = !reg.test(str)
            return status
        },