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viko16/ip-notation.js

Created September 8, 2016 05:54
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IP 地址的多种玩法
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ip-notation.js
var ipStr = '180.97.33.107'
var arr = ipStr.split('.').map((el => parseInt(el, 10)))
// 十进制
var ten = arr[0] * Math.pow(2, 24) + arr[1] * Math.pow(2, 16) + arr[2] * Math.pow(2, 8) + arr[3]
console.log('http://' + ten)
// 十六进制
var sixteen = ten.toString(16)
console.log('http://0x' + sixteen)
// 八进制
var eight = ten.toString(8)
console.log('http://0' + eight)
// 十六进制分段
var sixteenPart = arr.map(el => '0x' + el.toString(16))
console.log('http://' + sixteenPart.join('.'))
// 八进制分段
var eightPart = arr.map(el => '0' + el.toString(8))
console.log('http://' + eightPart.join('.'))
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