Utilities

utils.js

var utils = window.utils = {

  random: function (min, max) {
    min = min || 0;
    max = max || 10000;
    return Math.floor(Math.random() * (max - min + 1)) + min;
  },

  uuid: function (identifyNumber, options) {
    var time = new Date().getTime(), 
      uuid = ('xxxxxxxx-xxxx-' + identifyNumber + 'xxx-yxxx-xxxxxxxxxxxx').replace(/[xy]/g, function (char) {
      var random = (time + Math.random() * 16) % 16 | 0;
      time = Math.floor(time / 16);
      return (char === 'x' ? random : (random & 0x7 | 0x8)).toString(16);
    });
    if(options && !options.classic){
      uuid = uuid.replace(/-/g, '');
      if(options.length && length < 35){
        uuid = uuid.substr(0, options.length);
      }
    }
    if(options && options.prefix){
      uuid = options.prefix + uuid;
    }
    return uuid;
  },

  get: function (object, paths, defaultValue, fromIndex) {
    if(!fromIndex) {
      fromIndex = 0;
    }
    if(!object || !paths || paths.length <= fromIndex) {
      return defaultValue;
    }
    var operate = paths[fromIndex];
    object = (typeof operate === 'function') ? operate(object) : object[operate];
    fromIndex++;
    return paths.length === fromIndex ? object : utils.get(object, paths, defaultValue, fromIndex);
  },
  
  html2str: function(html){
    var dom = document.createElement('DIV');
    dom.innerHTML = html;
    return dom.textContent || dom.innerText || '';
  },
  
  ellipsis = function(html, max) {
    var str = utils.html2str(html);
    if (str.length > max) {
      str = str.replace(/\r|\n|\r\n/g,' ').substr(0, max).concat('...');
    }
    return str;
  }
}