//校验IPv4格式
let ipv4test = /(((\d{1,2})|(1\d{2})|(2[0-4]\d)|(25[0-5]))\.){3}((\d{1,2})|(1\d{2})|(2[0-4]\d)|(25[0-5]))/;
if (!ipv4test.test(value[0])) {
return { key: ‘IPv4格式不正确‘ }
}
let val = value[0].split(‘.‘);
const sub = 32 - value[1];
let a11 = (parseInt(val[0]) << 24) | (parseInt(val[1]) << 16) | (parseInt(val[2]) << 8) | (parseInt(val[3]) << 0);
console.log(value + ‘--> a11 :--->‘ + a11);
a11 = a11 >> sub << sub;
const ipSart = a11;
const ipEnd = a11 + (1 << sub) - 1;
//开始地址
let rightStartIp = (ipSart >> 24 & 255) + ‘.‘ + (ipSart >> 16 & 255) + ‘.‘ + (ipSart >> 8 & 255) + ‘.‘ + (ipSart >>> 0 & 255);
//结束地址
let rightEndIp = (ipEnd >> 24 & 255) + ‘.‘ + (ipEnd >> 16 & 255) + ‘.‘ + (ipEnd >> 8 & 255) + ‘.‘ + (ipEnd >>> 0 & 255);
//现在想要手动设定一个地址范围，比如只想要45个地址
let ipRangeByHand = (a11 >>> 0 ) + 45;
let setRange = (ipRangeByHand >>>24) + "." + (ipRangeByHand >>16 & 0xFF) + "." + (ipRangeByHand >>8 & 0xFF) + "." + (ipRangeByHand >>0 & 0xFF);
console.log(‘rightStartIp :--->‘ + rightStartIp);
console.log(‘rightEndIp :--->‘ + rightEndIp);
console.log(‘setRange :--->‘ + setRange);
