Выделение ячеек таблицы

Выделение ячеек таблицы, по принципу Excel. Работает с Shift и Ctrl

by Denis

HTML

<table id="timeGrid">
    <tr>
      <td>1</td>
      <td>2</td>
      <td>3</td>
      <td>4</td>
      <td>5</td>
      <td>6</td>
      <td>7</td>
      <td>8</td>
      <td>9</td>
      <td>10</td>
    </tr>
    <tr>
      <td>11</td>
      <td>12</td>
      <td>13</td>
      <td>14</td>
      <td>15</td>
      <td>16</td>
      <td>17</td>
      <td>18</td>
      <td>19</td>
      <td>20</td>
    </tr>
    <tr>
      <td>21</td>
      <td>22</td>
      <td>23</td>
      <td>24</td>
      <td>25</td>
      <td>26</td>
      <td>27</td>
      <td>28</td>
      <td>29</td>
      <td>30</td>
    </tr>
    <tr>
      <td>31</td>
      <td>32</td>
      <td>33</td>
      <td>34</td>
      <td>35</td>
      <td>36</td>
      <td>37</td>
      <td>38</td>
      <td>39</td>
      <td>40</td>
    </tr>
    <tr>
      <td>41</td>
      <td>42</td>
      <td>43</td>
      <td>44</td>
      <td>45</td>
      <td>46</td>
      <td>47</td>
      <td>48</td>
      <td>49</td>
      <td>50</td>
    </tr>
    <tr>
      <td>51</td>
      <td>52</td>
      <td>53</td>
      <td>54</td>
      <td>55</td>
      <td>56</td>
      <td>57</td>
      <td>58</td>
      <td>59</td>
      <td>60</td>
    </tr>
    <tr>
      <td>61</td>
      <td>62</td>
      <td>63</td>
      <td>64</td>
      <td>65</td>
      <td>66</td>
      <td>67</td>
      <td>68</td>
      <td>69</td>
      <td>70</td>
    </tr>
    <tr>
      <td>71</td>
      <td>72</td>
      <td>73</td>
      <td>74</td>
      <td>75</td>
      <td>76</td>
      <td>77</td>
      <td>78</td>
      <td>79</td>
      <td>80</td>
    </tr>
    <tr>
      <td>81</td>
      <td>82</td>
      <td>83</td>
      <td>84</td>
      <td>85</td>
      <td>86</td>
      <td>87</td>
      <td>88</td>
      <td>89</td>
      <td>90</td>
    </tr>
    <tr>
      <td>91</td>
      <td>92</td>
      <td>93</td>
      <td>94</td>
      <td>95</td>
      <td>96</td>
      <td>97</td>
      <td>98</td>
      <td>99</td>
      <td>100</td>
   ...

CSS

table {
  width: 100%;
    border-collapse: collapse;
    table-layout: fixed;
}

td {
    padding: 5px;
    text-align: center;
    border: 1px solid #999;
}

.pressedTime {
    background: #4b75a4;
    color: #ffffff;
}

td {
    -webkit-touch-callout: none;
    -webkit-user-select: none;
    -khtml-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
}

JavaScript

var td = $('#timeGrid td'),
    selection = {
        single: function(el) {
            td.not(el).removeClass(this.cl);
            this.ctrl(el);
        },
        shift: function(el) {
            if (typeof this.last !== 'number') {
                return this.single(el);
            }
            var till = $(el).index(this.slcr),
                from = this.last;
            if (from > till) till = [from, from = till][0];
            td.not(td.eq(this.last)).removeClass(this.cl);
            td.slice(from, till).add(el).addClass(this.cl);
        },
        ctrl: function(el) {
            $(el).addClass(this.cl);
            this.last = $(el).index(this.slcr);
            console.log(this.last);
        },
        slcr: '#timeGrid td',
        cl: 'pressedTime',
        last: null
    };
td.on('click', function(e) {
    method = !e.shiftKey && !e.ctrlKey ? 'single' : (e.shiftKey ? 'shift' : 'ctrl');
    selection[method](this);
});