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166 lines
4.6 KiB
Markdown
166 lines
4.6 KiB
Markdown
Stupid jQuery Table Sort
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========================
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This is a stupid jQuery table sorting plugin. Nothing fancy, nothing really
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impressive. Overall, stupidly simple.
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[View the demo here][0]
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See the example.html document to see how to implement it.
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Example Usage
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-------------
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The JS:
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$("table").stupidtable();
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The HTML:
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<table>
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<thead>
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<tr>
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<th data-sort="int">int</th>
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<th data-sort="float">float</th>
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<th data-sort="string">string</th>
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</tr>
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</thead>
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<tbody>
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<tr>
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<td>15</td>
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<td>-.18</td>
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<td>banana</td>
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</tr>
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...
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...
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...
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The thead and tbody tags must be used.
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Add a `data-sort` attribute of "DATATYPE" to the th elements to make them sortable
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by that data type. If you don't want that column to be sortable, just omit the
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`data-sort` attribute.
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Predefined data types
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---------------------
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Our aim is to keep this plugin as lightweight as possible. Consequently, the
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only predefined datatypes that you can pass to the th elements are
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* `int`
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* `float`
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* `string` (case-sensitive)
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* `string-ins` (case-insensitive)
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These data types will be sufficient for many simple tables. However, if you need
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different data types for sorting, you can easily create your own!
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Creating your own data types
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----------------------------
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Creating your own data type for sorting purposes is easy as long as you are
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comfortable using custom functions for sorting. Consult [Mozilla's Docs][1]
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if you're not.
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Let's create an alphanum datatype for a User ID that takes strings in the
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form "D10", "A40", and sorts them based on the number.
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<thead>
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<tr>
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<th data-sort="string">Name</th>
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<th data-sort="int">Age</th>
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<th data-sort="alphanum">UserID</th>
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</tr>
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</thead>
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<tbody>
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<tr>
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<td>Joseph McCullough</td>
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<td>20</td>
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<td>D10</td>
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</tr>
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<tr>
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<td>Justin Edwards</td>
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<td>29</td>
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<td>A40</td>
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</tr>
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...
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...
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...
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Now we need to specify how the **alphanum** type will be sorted. To do that,
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we do the following:
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$("table").stupidtable({
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"alphanum":function(a,b){
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var pattern = "^[A-Z](\\d+)$";
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var re = new RegExp(pattern);
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var aNum = re.exec(a).slice(1);
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var bNum = re.exec(b).slice(1);
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return parseInt(aNum,10) - parseInt(bNum,10);
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}
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});
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This extracts the integers from the cell and compares them in the style
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that sort functions use.
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Callbacks
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---------
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To execute a callback function after a table column has been sorted, you can
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bind on `aftertablesort`.
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var table = $("table").stupidtable();
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table.bind('aftertablesort', function (event, data) {
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// data.column - the index of the column sorted after a click
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// data.direction - the sorting direction (either asc or desc)
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// $(this) - this table object
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console.log("The sorting direction: " + data.direction);
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console.log("The column index: " + data.column);
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});
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Similarly, to execute a callback before a table column has been sorted, you can
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bind on `beforetablesort`.
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See the complex_example.html file.
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Data with multiple representations/predefined order
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---------------------------------------------------
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Often we find two distinct ways of offering data: In a machine friendly way,
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and a Human-friendly way. A clear example is a Timestamp. Additionally,
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arbitrary data values may already have a predefined sort order. In either case,
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it's to our advantage to have a way to store the "sortable data" while letting
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the viewer see the Human-friendly representation of that data. While the
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purpose of the custom sort methods is to take data and make it sortable
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(machine friendly), sometimes this is too hard or too expensive, computationally
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speaking.
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To solve this problem, you can specify a `data-sort-value` attribute to
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table cells, and the attribute value will be the basis of the sort as opposed
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to the text value of the table cell. See the complex_example.html file, where
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we sort a column of letters based not on their alphabetical order, but by their
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frequency in the English language. You'll still need to specify a sort type
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or come up with your own custom sort function, but the presence of the
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`data-sort-value` attribute tells the plugin to use the value of the
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attribute as the basis of the sort.
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License
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-------
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The Stupid jQuery Plugin is licensed under the MIT license. See the LICENSE
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file for full details.
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[0]: http://joequery.github.com/Stupid-Table-Plugin/
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[1]: https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array/sort
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