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1
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2
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3 $.extend( DataTable.ext.aTypes, [
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4 /*
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5 * Function: -
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6 * Purpose: Check to see if a string is numeric
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7 * Returns: string:'numeric' or null
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8 * Inputs: mixed:sText - string to check
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9 */
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10 function ( sData )
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11 {
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12 /* Allow zero length strings as a number */
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13 if ( typeof sData === 'number' )
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14 {
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15 return 'numeric';
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16 }
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17 else if ( typeof sData !== 'string' )
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18 {
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19 return null;
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20 }
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21
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22 var sValidFirstChars = "0123456789-";
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23 var sValidChars = "0123456789.";
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24 var Char;
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25 var bDecimal = false;
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26
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27 /* Check for a valid first char (no period and allow negatives) */
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28 Char = sData.charAt(0);
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29 if (sValidFirstChars.indexOf(Char) == -1)
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30 {
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31 return null;
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32 }
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33
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34 /* Check all the other characters are valid */
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35 for ( var i=1 ; i<sData.length ; i++ )
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36 {
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37 Char = sData.charAt(i);
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38 if (sValidChars.indexOf(Char) == -1)
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39 {
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40 return null;
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41 }
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42
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43 /* Only allowed one decimal place... */
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44 if ( Char == "." )
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45 {
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46 if ( bDecimal )
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47 {
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48 return null;
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49 }
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50 bDecimal = true;
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51 }
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52 }
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53
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54 return 'numeric';
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55 },
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56
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57 /*
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58 * Function: -
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59 * Purpose: Check to see if a string is actually a formatted date
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60 * Returns: string:'date' or null
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61 * Inputs: string:sText - string to check
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62 */
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63 function ( sData )
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64 {
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65 var iParse = Date.parse(sData);
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66 if ( (iParse !== null && !isNaN(iParse)) || (typeof sData === 'string' && sData.length === 0) )
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67 {
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68 return 'date';
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69 }
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70 return null;
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71 },
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72
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73 /*
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74 * Function: -
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75 * Purpose: Check to see if a string should be treated as an HTML string
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76 * Returns: string:'html' or null
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77 * Inputs: string:sText - string to check
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78 */
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79 function ( sData )
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80 {
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81 if ( typeof sData === 'string' && sData.indexOf('<') != -1 && sData.indexOf('>') != -1 )
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82 {
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83 return 'html';
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84 }
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85 return null;
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86 }
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87 ] );
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88
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