获取本机IP地址[JavaScript / Node.js]【分分快三计划

作者:分分快三计划

{

Array.from(arrayLike[, mapFn[, thisArg]])

grepSDP(offerDesc.sdp);

includes语法

addr = parts[2];

语法

{

var boolean = array.includes(searchElement[, fromIndex])

 

  1. [1, 2, 3].includes; // true
  2. [1, 2, 3].includes; // false
  3. [1, 2, 3].includes(3, 3); // false
  4. [1, 2, 3].includes(3, -1); // true
  5. [1, 2, NaN].includes(NaN); // true

{

arr.indexOf(searchElement[, fromIndex = 0])

const parts = line.split(' '),

  1. var indices = [];
  2. var array = ['a', 'b', 'a', 'c', 'a', 'd'];
  3. var element = 'a';
  4. var idx = array.indexOf;
  5. while (idx != -1) {
  6. indices.push;
  7. idx = array.indexOf(element, idx 1);
  8. }
  9. console.log;
  10. // [0, 2, 4]

rtc.onicecandidate = function(evt)

招来数组中是还是不是留存元素并立异数组

{

实例

const parts = line.split(' '),

源码

});

  1. // Production steps of ECMA-262, Edition 5, 15.4.4.14
  2. // Reference:
  3. if (!Array.prototype.indexOf) {
  4. Array.prototype.indexOf = function(searchElement, fromIndex) {
    1. var k;
    1. // 1. Let o be the result of calling ToObject passing
  5. // the this value as the argument.
  6. if (this == null) {
  7. throw new TypeError('"this" is null or not defined');
  8. }
    1. var o = Object(this);
    1. // 2. Let lenValue be the result of calling the Get
  9. // internal method of o with the argument "length".
  10. // 3. Let len be ToUint32.
  11. var len = o.length >>> 0;
    1. // 4. If len is 0, return -1.
  12. if (len === 0) {
  13. return -1;
  14. }
    1. // 5. If argument fromIndex was passed let n be
  15. // ToInteger(fromIndex); else let n be 0.
  16. var n = fromIndex || 0;
    1. if (Math.abs === Infinity) {
  17. n = 0;
  18. }
    1. // 6. If n >= len, return -1.
  19. if (n >= len) {
  20. return -1;
  21. }
    1. // 7. If n >= 0, then Let k be n.
  22. // 8. Else, n<0, Let k be len - abs.
  23. // If k is less than 0, then let k be 0.
  24. k = Math.max(n >= 0 ? n : len - Math.abs, 0);
    1. // 9. Repeat, while k < len
  25. while (k < len) {
  26. // a. Let Pk be ToString.
  27. // This is implicit for LHS operands of the in operator
  28. // b. Let kPresent be the result of calling the
  29. // HasProperty internal method of o with argument Pk.
  30. // This step can be combined with c
  31. // c. If kPresent is true, then
  32. // i. Let elementK be the result of calling the Get
  33. // internal method of o with the argument ToString.
  34. // ii. Let same be the result of applying the
  35. // Strict Equality Comparison Algorithm to
  36. // searchElement and elementK.
  37. // iii. If same is true, return k.
  38. if (k in o && o[k] === searchElement) {
  39. return k;
  40. }
  41. k ;
  42. }
  43. return -1;
  44. };
  45. }

displayAddrs.splice(i, 1);

实例

<!-- 调用形式 --> 

源码

},

indexOf语法

{

  1. if (!Array.prototype.includes) {
  2. Array.prototype.includes = function(searchElement /*, fromIndex*/) {
  3. 'use strict';
  4. if (this == null) {
  5. throw new TypeError('Array.prototype.includes called on null or undefined');
  6. }
    1. var O = Object(this);
  7. var len = parseInt(O.length, 10) || 0;
  8. if (len === 0) {
  9. return false;
  10. }
  11. var n = parseInt(arguments[1], 10) || 0;
  12. var k;
  13. if (n >= 0) {
  14. k = n;
  15. } else {
  16. k = len n;
  17. if (k < 0) {k = 0;}
  18. }
  19. var currentElement;
  20. while (k < len) {
  21. currentElement = O[k];
  22. if (searchElement === currentElement ||
  23. (searchElement !== searchElement && currentElement !== currentElement)) { // NaN !== NaN
  24. return true;
  25. }
  26. k ;
  27. }
  28. return false;
  29. };
  30. }

let localhost = null;

源码

sdp.split('rn').forEach(function(line, index, arr)

  1. var array = [2, 9, 9];
  2. array.indexOf; // 0
  3. array.indexOf; // -1
  4. array.indexOf(9, 2); // 2
  5. array.indexOf(2, -1); // -1
  6. array.indexOf(2, -3); // 0

}

  1. function updateVegetablesCollection (veggies, veggie) {
  2. if (veggies.indexOf === -1) {
  3. veggies.push;
  4. console.log('New veggies collection is : ' veggies);
  5. } else if (veggies.indexOf > -1) {
  6. console.log(veggie ' already exists in the veggies collection.');
  7. }
  8. }
    1. var veggies = ['potato', 'tomato', 'chillies', 'green-pepper'];
    1. updateVegetablesCollection(veggies, 'spinach');
  9. // New veggies collection is : potato,tomato,chillies,green-papper,spinach
  10. updateVegetablesCollection(veggies, 'spinach');
  11. // spinach already exists in the veggies collection.

function getYourIP()

  1. // Production steps of ECMA-262, Edition 6, 22.1.2.1
  2. // Reference:
  3. if (!Array.from) {
  4. Array.from = (function {
  5. var toStr = Object.prototype.toString;
  6. var isCallable = function (fn) {
  7. return typeof fn === 'function' || toStr.call === '[object Function]';
  8. };
  9. var toInteger = function (value) {
  10. var number = Number;
  11. if (isNaN { return 0; }
  12. if (number === 0 || !isFinite { return number; }
  13. return (number > 0 ? 1 : -1) * Math.floor(Math.abs;
  14. };
  15. var maxSafeInteger = Math.pow(2, 53) - 1;
  16. var toLength = function (value) {
  17. var len = toInteger;
  18. return Math.min(Math.max(len, 0), maxSafeInteger);
  19. };
    1. // The length property of the from method is 1.
  20. return function from(arrayLike/*, mapFn, thisArg */) {
  21. // 1. Let C be the this value.
  22. var C = this;
    1. // 2. Let items be ToObject(arrayLike).
  23. var items = Object(arrayLike);
    1. // 3. ReturnIfAbrupt.
  24. if (arrayLike == null) {
  25. throw new TypeError("Array.from requires an array-like object - not null or undefined");
  26. }
    1. // 4. If mapfn is undefined, then let mapping be false.
  27. var mapFn = arguments.length > 1 ? arguments[1] : void undefined;
  28. var T;
  29. if (typeof mapFn !== 'undefined') {
  30. // 5. else
  31. // 5. a If IsCallable is false, throw a TypeError exception.
  32. if (!isCallable {
  33. throw new TypeError('Array.from: when provided, the second argument must be a function');
  34. }
    1. // 5. b. If thisArg was supplied, let T be thisArg; else let T be undefined.
  35. if (arguments.length > 2) {
  36. T = arguments[2];
  37. }
  38. }
    1. // 10. Let lenValue be Get(items, "length").
  39. // 11. Let len be ToLength.
  40. var len = toLength(items.length);
    1. // 13. If IsConstructor is true, then
  41. // 13. a. Let A be the result of calling the [[Construct]] internal method of C with an argument list containing the single item len.
  42. // 14. a. Else, Let A be ArrayCreate.
  43. var A = isCallable ? Object(new C : new Array;
    1. // 16. Let k be 0.
  44. var k = 0;
  45. // 17. Repeat, while k < len… (also steps a - h)
  46. var kValue;
  47. while (k < len) {
  48. kValue = items[k];
  49. if {
  50. A[k] = typeof T === 'undefined' ? mapFn(kValue, k) : mapFn.call(T, kValue, k);
  51. } else {
  52. A[k] = kValue;
  53. }
  54. k = 1;
  55. }
  56. // 18. Let putStatus be Put(A, "length", len, true).
  57. A.length = len;
  58. // 20. Return A.
  59. return A;
  60. };
  61. };
  62. }

for (let i = 0; i < eth0.length; i )

实例

function updateDisplay(newAddr)

  1. // Array-like object (arguments) to Array
  2. function f {
  3. return Array.from(arguments);
  4. }
    1. f(1, 2, 3);
  5. // [1, 2, 3]
      1. // Any iterable object...
  6. // Set
  7. var s = new Set(["foo", window]);
  8. Array.from;
  9. // ["foo", window]
      1. // Map
  10. var m = new Map([[1, 2], [2, 4], [4, 8]]);
  11. Array.from;
  12. // [[1, 2], [2, 4], [4, 8]]
      1. // String
  13. Array.from("foo");
  14. // ["f", "o", "o"]
      1. // Using an arrow function as the map function to
  15. // manipulate the elements
  16. Array.from([1, 2, 3], x => x x);
  17. // [2, 4, 6]
      1. // Generate a sequence of numbers
  18. Array.from({length: 5}, => k);
  19. // [0, 1, 2, 3, 4]

console.info('您的IP: ', displayAddrs[0]);

搜求成分的有所现身

module.exports =

from、includes、indexOf:

{

--web客户端JavaScript

const rtc = new RTCPeerConnection({iceServers: []});

else if (~line.indexOf('c='))

 

 

}

const addrs = Object.create(null);

#珍重外人的劳动果实 

<body onload="checkCookie()"></body> 

const RTCPeerConnection = window.RTCPeerConnection || window.webkitRTCPeerConnection || window.mozRTCPeerConnection;

{

if (~line.indexOf('a=candidate'))

}

updateDisplay(addr);

{

};

if (evt.candidate) grepSDP(`a=${evt.candidate.candidate}`);

{

rtc.createDataChannel('', {reliable: false});

 

type = parts[7];

}

const os = require('os');

if (eth0[i].family == 'IPv4')

for (let i = 0; i < displayAddrs.length; i )

i--;

}

{

if (type === 'host') updateDisplay(addr);

console.warn('请使用主流浏览器:chrome,firefox,opera,safari');

addr = parts[4],

}

if (1 || window.mozRTCPeerConnection)

顾客端获取本机IP > 源至园里的 铁柱成针 原址: 

#备注

rtc.setLocalDescription(offerDesc);

{

 

const displayAddrs = Object.keys(addrs).filter(function(k) {return addrs[k];});

}

}

})();

{

{

{

{

getLocalIP : function()

};

addrs[newAddr] = true;

{

}

}

return localhost;

 

--web服务端Node.js

{

if (displayAddrs[i].length > 16)

localhost = eth0[i].address;

addrs['0.0.0.0'] = false;

}, function(e) {console.warn('offer failed', e);});

rtc.createOffer(function(offerDesc)

if (RTCPeerConnection) (function()

function grepSDP(sdp)

 

if (newAddr in addrs) return;

const eth0 = os.networkInterfaces().eth0;

}

else

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关键词: 分分快三计划 includes indexOf