jcc_common/lib/index.js

utils about jcc

/**
MIT License

Copyright (c) 2018 JCC Dex

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.
 */
/**
 * @author https://github.com/GinMu
 */
'use strict';

function _typeof(o) { "@babel/helpers - typeof"; return _typeof = "function" == typeof Symbol && "symbol" == typeof Symbol.iterator ? function (o) { return typeof o; } : function (o) { return o && "function" == typeof Symbol && o.constructor === Symbol && o !== Symbol.prototype ? "symbol" : typeof o; }, _typeof(o); }
var bin2hex = function bin2hex(b) {
  var i = 0;
  var l = 0;
  var o = '';
  var s = b + '';
  var n;
  for (i = 0, l = s.length; i < l; i++) {
    n = s.charCodeAt(i).toString(16);
    /* istanbul ignore next */
    o += n.length < 2 ? '0' + n : n;
  }
  return o;
};

/**
 * finger print
 * @returns {String} hex value
 */
var getUUID = function getUUID() {
  var canvas = document.createElement('canvas');
  var ctx = canvas.getContext('2d');
  if (!ctx) return '';
  var txt = 'http://security.tencent.com/';
  ctx.textBaseline = 'top';
  ctx.font = '14px Arial';
  ctx.textBaseline = 'tencent';
  ctx.fillStyle = '#f60';
  ctx.fillRect(125, 1, 62, 20);
  ctx.fillStyle = '#069';
  ctx.fillText(txt, 2, 15);
  ctx.fillStyle = 'rgba(102, 204, 0, 0.7)';
  ctx.fillText(txt, 4, 17);
  var b64 = canvas.toDataURL().replace('data:image/png;base64,', '');
  var bin = atob(b64);
  return bin2hex(bin.slice(-16, -12));
};
var filterOx = function filterOx(str) {
  if (typeof str !== 'string') {
    return str;
  }
  if (str.startsWith('0x')) {
    return str.substring(2);
  }
  return str;
};
var isEmptyObject = function isEmptyObject(obj) {
  if (obj == null || _typeof(obj) !== 'object') {
    return true;
  }
  return Object.keys(obj).length === 0;
};
var dedupe = function dedupe(arr) {
  if (!Array.isArray(arr)) {
    return [];
  }
  return Array.from(new Set(arr));
};
var isNumber = function isNumber(num) {
  return !Number.isNaN(num) && Number.isFinite(num);
};
var isInteger = function isInteger(num) {
  var reg = /^-?\d+$/;
  return reg.test(num);
};
var scientificToDecimal = function scientificToDecimal(num) {
  // if the number is in scientific notation remove it
  if (/\d+\.?\d*e[+-]*\d+/i.test(num)) {
    var zero = '0';
    var parts = String(num).toLowerCase().split('e'); // split into coeff and exponent
    var e = parts.pop(); // store the exponential part
    var l = Math.abs(e); // get the number of zeros
    var sign = e / l;
    var coeffArray = parts[0].split('.');
    if (sign === -1) {
      num = zero + '.' + new Array(l).join(zero) + coeffArray.join('');
    } else {
      var dec = coeffArray[1];
      if (dec) l = l - dec.length;
      num = coeffArray.join('') + new Array(l + 1).join(zero);
    }
  }
  return num;
};
var toThousandSeperator = function toThousandSeperator(n) {
  var num = parseFloat(n);
  if (!isNumber(num)) {
    return n;
  }
  return num.toLocaleString();
};
var browser = {
  versions: function () {
    var u = navigator.userAgent;
    return {
      trident: u.indexOf('Trident') > -1,
      // IE
      presto: u.indexOf('Presto') > -1,
      // Opera
      webKit: u.indexOf('AppleWebKit') > -1,
      // Apple、Chrome
      gecko: u.indexOf('Gecko') > -1 && u.indexOf('KHTML') === -1,
      // Firefox
      mobile: !!u.match(/AppleWebKit.*Mobile.*/),
      // mobile
      ios: !!u.match(/\(i[^;]+;( U;)? CPU.+Mac OS X/),
      // ios
      android: u.indexOf('Android') > -1 || u.indexOf('Adr') > -1,
      // android
      iPhone: u.indexOf('iPhone') > -1,
      // iPhone、QQHD
      iPad: u.indexOf('iPad') > -1,
      // iPad
      webApp: u.indexOf('Safari') === -1,
      // web
      weixin: u.indexOf('MicroMessenger') > -1,
      // wechat
      qq: !!u.match(/\sQQ/i) // QQ
    };
  }(),
  language: (navigator.browserLanguage || navigator.language).toLowerCase()
};
exports = module.exports = {
  getUUID: getUUID,
  filterOx: filterOx,
  isEmptyObject: isEmptyObject,
  dedupe: dedupe,
  isNumber: isNumber,
  isInteger: isInteger,
  scientificToDecimal: scientificToDecimal,
  toThousandSeperator: toThousandSeperator,
  browser: browser
};