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< h1 > DataTables example < span > Fuzzy Searching< / span > < / h1 >
< div class = "info" >
< p > Fuzzy searching is used in search engines and databases to perform searches that will match results that are not necessarily exactly the same as the search
term. This allows spelling mistakes and typos to be accounted for. It also allows small changes in dialect not to affect search results. A commonly used example is
for surname searching. "Smith" and "Smythe" are pronounced the same way, but using conventional searching typing "Smith" would not return "Smythe".< / p >
< p > This plug-in adds fuzzy search functionality to DataTables. It does this through a combination of exact matching and the < a href =
"https://github.com/tad-lispy/node-damerau-levenshtein">Damerau-Levenshtein algorithm< / a > . There are three initialisation options that are associated with this
plugin.< / p >
< ul class = "markdown" >
< li > < code > fuzzySearch.toggleSmart< / code > allows the searching to be changed from exact matching to fuzzy searching.< / li >
< li > < code > fuzzySearch.rankColumn< / code > allows the % match to be set in a column within the Datatable. Some examples of use cases could be to display the value
to the user. or to hide the column and order based on it - as a search engine would.< / li >
< li > < code > fuzzySearch.threshold< / code > allows the value of similarity that is required from the Damerau-Levenshtein function to display the row to be
changed.< / li >
< / ul >
< p > This example demonstrates the use of the < code > fuzzySearch.threshold< / code > initialisation option. The default value for this option is 0.5. This value is used to
compare against the Damerau-Levenshtein similarity metric which is calculated by dividing the number of changes needed to make the words the same, by the length of
the longest word and subtracting that value from one. This means that rows where each word in the search value matches a word in the row by at least 0.5 will be displayed. In this example
< code > fuzzySearch.threshold< / code > is set to < code > 0.1< / code > . This will mean that significantly more rows are displayed than normal. The value set here has to be
a decimal number between 0 and 1 with no limit on decimal places. Any greater than 1 and no results will be displayed, 0 will always display all results.< / p >
< p > Let's consider an example of how these values are calculated. To do this let's walk through the comparison between a cell containing "Jackson" and a search value
of "sockssssssssssssssss". Here the longer of the two values is the search value, which is 20 characters long. There are 3 matching letters mid string - "cks".
The "Ja" preceeding the "cks" requires a substitution of 2 to make the strings match. The "on" following the "cks" also requres a substitution of 2 to make the
strings match. The remaining 13 "s"s are deleted, this gives a total change score of 17. Dividing that by the longest length (20) gives a value of 0.85. Subtracting
that value from one gives a similarity score of 0.15. This would therefore pass in the below example where the threshold is 0.1. For obvious reasons, it is not
recommended that you set the threshold value that low.< / p >
< / div >
< div class = "demo-html" >
< table id = "example" class = "display" style = "width:100%" >
< thead >
< tr >
< th > Name< / th >
< th > Position< / th >
< th > Office< / th >
< th > Age< / th >
< th > Start date< / th >
< th > Salary< / th >
< th > Similarity< / th >
< / tr >
< / thead >
< tbody >
< tr >
< td > Tiger Nixon< / td >
< td > System Architect< / td >
< td > Edinburgh< / td >
< td > 61< / td >
< td > 2011/04/25< / td >
< td > $320,800< / td >
< th > < / th >
< / tr >
< tr >
< td > Garrett Winters< / td >
< td > Accountant< / td >
< td > Tokyo< / td >
< td > 63< / td >
< td > 2011/07/25< / td >
< td > $170,750< / td >
< th > < / th >
< / tr >
< tr >
< td > Ashton Cox< / td >
< td > Junior Technical Author< / td >
< td > San Francisco< / td >
< td > 66< / td >
< td > 2009/01/12< / td >
< td > $86,000< / td >
< th > < / th >
< / tr >
< tr >
< td > Cedric Kelly< / td >
< td > Senior Javascript Developer< / td >
< td > Edinburgh< / td >
< td > 22< / td >
< td > 2012/03/29< / td >
< td > $433,060< / td >
< th > < / th >
< / tr >
< tr >
< td > Airi Satou< / td >
< td > Accountant< / td >
< td > Tokyo< / td >
< td > 33< / td >
< td > 2008/11/28< / td >
< td > $162,700< / td >
< th > < / th >
< / tr >
< tr >
< td > Brielle Williamson< / td >
< td > Integration Specialist< / td >
< td > New York< / td >
< td > 61< / td >
< td > 2012/12/02< / td >
< td > $372,000< / td >
< th > < / th >
< / tr >
< tr >
< td > Herrod Chandler< / td >
< td > Sales Assistant< / td >
< td > San Francisco< / td >
< td > 59< / td >
< td > 2012/08/06< / td >
< td > $137,500< / td >
< th > < / th >
< / tr >
< tr >
< td > Rhona Davidson< / td >
< td > Integration Specialist< / td >
< td > Tokyo< / td >
< td > 55< / td >
< td > 2010/10/14< / td >
< td > $327,900< / td >
< th > < / th >
< / tr >
< tr >
< td > Colleen Hurst< / td >
< td > Javascript Developer< / td >
< td > San Francisco< / td >
< td > 39< / td >
< td > 2009/09/15< / td >
< td > $205,500< / td >
< th > < / th >
< / tr >
< tr >
< td > Sonya Frost< / td >
< td > Software Engineer< / td >
< td > Edinburgh< / td >
< td > 23< / td >
< td > 2008/12/13< / td >
< td > $103,600< / td >
< th > < / th >
< / tr >
< tr >
< td > Jena Gaines< / td >
< td > Office Manager< / td >
< td > London< / td >
< td > 30< / td >
< td > 2008/12/19< / td >
< td > $90,560< / td >
< th > < / th >
< / tr >
< tr >
< td > Quinn Flynn< / td >
< td > Support Lead< / td >
< td > Edinburgh< / td >
< td > 22< / td >
< td > 2013/03/03< / td >
< td > $342,000< / td >
< th > < / th >
< / tr >
< tr >
< td > Charde Marshall< / td >
< td > Regional Director< / td >
< td > San Francisco< / td >
< td > 36< / td >
< td > 2008/10/16< / td >
< td > $470,600< / td >
< th > < / th >
< / tr >
< tr >
< td > Haley Kennedy< / td >
< td > Senior Marketing Designer< / td >
< td > London< / td >
< td > 43< / td >
< td > 2012/12/18< / td >
< td > $313,500< / td >
< th > < / th >
< / tr >
< tr >
< td > Tatyana Fitzpatrick< / td >
< td > Regional Director< / td >
< td > London< / td >
< td > 19< / td >
< td > 2010/03/17< / td >
< td > $385,750< / td >
< th > < / th >
< / tr >
< tr >
< td > Michael Silva< / td >
< td > Marketing Designer< / td >
< td > London< / td >
< td > 66< / td >
< td > 2012/11/27< / td >
< td > $198,500< / td >
< th > < / th >
< / tr >
< tr >
< td > Paul Byrd< / td >
< td > Chief Financial Officer (CFO)< / td >
< td > New York< / td >
< td > 64< / td >
< td > 2010/06/09< / td >
< td > $725,000< / td >
< th > < / th >
< / tr >
< tr >
< td > Gloria Little< / td >
< td > Systems Administrator< / td >
< td > New York< / td >
< td > 59< / td >
< td > 2009/04/10< / td >
< td > $237,500< / td >
< th > < / th >
< / tr >
< tr >
< td > Bradley Greer< / td >
< td > Software Engineer< / td >
< td > London< / td >
< td > 41< / td >
< td > 2012/10/13< / td >
< td > $132,000< / td >
< th > < / th >
< / tr >
< tr >
< td > Dai Rios< / td >
< td > Personnel Lead< / td >
< td > Edinburgh< / td >
< td > 35< / td >
< td > 2012/09/26< / td >
< td > $217,500< / td >
< th > < / th >
< / tr >
< tr >
< td > Jenette Caldwell< / td >
< td > Development Lead< / td >
< td > New York< / td >
< td > 30< / td >
< td > 2011/09/03< / td >
< td > $345,000< / td >
< th > < / th >
< / tr >
< tr >
< td > Yuri Berry< / td >
< td > Chief Marketing Officer (CMO)< / td >
< td > New York< / td >
< td > 40< / td >
< td > 2009/06/25< / td >
< td > $675,000< / td >
< th > < / th >
< / tr >
< tr >
< td > Caesar Vance< / td >
< td > Pre-Sales Support< / td >
< td > New York< / td >
< td > 21< / td >
< td > 2011/12/12< / td >
< td > $106,450< / td >
< th > < / th >
< / tr >
< tr >
< td > Doris Wilder< / td >
< td > Sales Assistant< / td >
< td > Sydney< / td >
< td > 23< / td >
< td > 2010/09/20< / td >
< td > $85,600< / td >
< th > < / th >
< / tr >
< tr >
< td > Angelica Ramos< / td >
< td > Chief Executive Officer (CEO)< / td >
< td > London< / td >
< td > 47< / td >
< td > 2009/10/09< / td >
< td > $1,200,000< / td >
< th > < / th >
< / tr >
< tr >
< td > Gavin Joyce< / td >
< td > Developer< / td >
< td > Edinburgh< / td >
< td > 42< / td >
< td > 2010/12/22< / td >
< td > $92,575< / td >
< th > < / th >
< / tr >
< tr >
< td > Jennifer Chang< / td >
< td > Regional Director< / td >
< td > Singapore< / td >
< td > 28< / td >
< td > 2010/11/14< / td >
< td > $357,650< / td >
< th > < / th >
< / tr >
< tr >
< td > Brenden Wagner< / td >
< td > Software Engineer< / td >
< td > San Francisco< / td >
< td > 28< / td >
< td > 2011/06/07< / td >
< td > $206,850< / td >
< th > < / th >
< / tr >
< tr >
< td > Fiona Green< / td >
< td > Chief Operating Officer (COO)< / td >
< td > San Francisco< / td >
< td > 48< / td >
< td > 2010/03/11< / td >
< td > $850,000< / td >
< th > < / th >
< / tr >
< tr >
< td > Shou Itou< / td >
< td > Regional Marketing< / td >
< td > Tokyo< / td >
< td > 20< / td >
< td > 2011/08/14< / td >
< td > $163,000< / td >
< th > < / th >
< / tr >
< tr >
< td > Michelle House< / td >
< td > Integration Specialist< / td >
< td > Sydney< / td >
< td > 37< / td >
< td > 2011/06/02< / td >
< td > $95,400< / td >
< th > < / th >
< / tr >
< tr >
< td > Suki Burks< / td >
< td > Developer< / td >
< td > London< / td >
< td > 53< / td >
< td > 2009/10/22< / td >
< td > $114,500< / td >
< th > < / th >
< / tr >
< tr >
< td > Prescott Bartlett< / td >
< td > Technical Author< / td >
< td > London< / td >
< td > 27< / td >
< td > 2011/05/07< / td >
< td > $145,000< / td >
< th > < / th >
< / tr >
< tr >
< td > Gavin Cortez< / td >
< td > Team Leader< / td >
< td > San Francisco< / td >
< td > 22< / td >
< td > 2008/10/26< / td >
< td > $235,500< / td >
< th > < / th >
< / tr >
< tr >
< td > Martena Mccray< / td >
< td > Post-Sales support< / td >
< td > Edinburgh< / td >
< td > 46< / td >
< td > 2011/03/09< / td >
< td > $324,050< / td >
< th > < / th >
< / tr >
< tr >
< td > Unity Butler< / td >
< td > Marketing Designer< / td >
< td > San Francisco< / td >
< td > 47< / td >
< td > 2009/12/09< / td >
< td > $85,675< / td >
< th > < / th >
< / tr >
< tr >
< td > Howard Hatfield< / td >
< td > Office Manager< / td >
< td > San Francisco< / td >
< td > 51< / td >
< td > 2008/12/16< / td >
< td > $164,500< / td >
< th > < / th >
< / tr >
< tr >
< td > Hope Fuentes< / td >
< td > Secretary< / td >
< td > San Francisco< / td >
< td > 41< / td >
< td > 2010/02/12< / td >
< td > $109,850< / td >
< th > < / th >
< / tr >
< tr >
< td > Vivian Harrell< / td >
< td > Financial Controller< / td >
< td > San Francisco< / td >
< td > 62< / td >
< td > 2009/02/14< / td >
< td > $452,500< / td >
< th > < / th >
< / tr >
< tr >
< td > Timothy Mooney< / td >
< td > Office Manager< / td >
< td > London< / td >
< td > 37< / td >
< td > 2008/12/11< / td >
< td > $136,200< / td >
< th > < / th >
< / tr >
< tr >
< td > Jackson Bradshaw< / td >
< td > Director< / td >
< td > New York< / td >
< td > 65< / td >
< td > 2008/09/26< / td >
< td > $645,750< / td >
< th > < / th >
< / tr >
< tr >
< td > Olivia Liang< / td >
< td > Support Engineer< / td >
< td > Singapore< / td >
< td > 64< / td >
< td > 2011/02/03< / td >
< td > $234,500< / td >
< th > < / th >
< / tr >
< tr >
< td > Bruno Nash< / td >
< td > Software Engineer< / td >
< td > London< / td >
< td > 38< / td >
< td > 2011/05/03< / td >
< td > $163,500< / td >
< th > < / th >
< / tr >
< tr >
< td > Sakura Yamamoto< / td >
< td > Support Engineer< / td >
< td > Tokyo< / td >
< td > 37< / td >
< td > 2009/08/19< / td >
< td > $139,575< / td >
< th > < / th >
< / tr >
< tr >
< td > Thor Walton< / td >
< td > Developer< / td >
< td > New York< / td >
< td > 61< / td >
< td > 2013/08/11< / td >
< td > $98,540< / td >
< th > < / th >
< / tr >
< tr >
< td > Finn Camacho< / td >
< td > Support Engineer< / td >
< td > San Francisco< / td >
< td > 47< / td >
< td > 2009/07/07< / td >
< td > $87,500< / td >
< th > < / th >
< / tr >
< tr >
< td > Serge Baldwin< / td >
< td > Data Coordinator< / td >
< td > Singapore< / td >
< td > 64< / td >
< td > 2012/04/09< / td >
< td > $138,575< / td >
< th > < / th >
< / tr >
< tr >
< td > Zenaida Frank< / td >
< td > Software Engineer< / td >
< td > New York< / td >
< td > 63< / td >
< td > 2010/01/04< / td >
< td > $125,250< / td >
< th > < / th >
< / tr >
< tr >
< td > Zorita Serrano< / td >
< td > Software Engineer< / td >
< td > San Francisco< / td >
< td > 56< / td >
< td > 2012/06/01< / td >
< td > $115,000< / td >
< th > < / th >
< / tr >
< tr >
< td > Jennifer Acosta< / td >
< td > Junior Javascript Developer< / td >
< td > Edinburgh< / td >
< td > 43< / td >
< td > 2013/02/01< / td >
< td > $75,650< / td >
< th > < / th >
< / tr >
< tr >
< td > Cara Stevens< / td >
< td > Sales Assistant< / td >
< td > New York< / td >
< td > 46< / td >
< td > 2011/12/06< / td >
< td > $145,600< / td >
< th > < / th >
< / tr >
< tr >
< td > Hermione Butler< / td >
< td > Regional Director< / td >
< td > London< / td >
< td > 47< / td >
< td > 2011/03/21< / td >
< td > $356,250< / td >
< th > < / th >
< / tr >
< tr >
< td > Lael Greer< / td >
< td > Systems Administrator< / td >
< td > London< / td >
< td > 21< / td >
< td > 2009/02/27< / td >
< td > $103,500< / td >
< th > < / th >
< / tr >
< tr >
< td > Jonas Alexander< / td >
< td > Developer< / td >
< td > San Francisco< / td >
< td > 30< / td >
< td > 2010/07/14< / td >
< td > $86,500< / td >
< th > < / th >
< / tr >
< tr >
< td > Shad Decker< / td >
< td > Regional Director< / td >
< td > Edinburgh< / td >
< td > 51< / td >
< td > 2008/11/13< / td >
< td > $183,000< / td >
< th > < / th >
< / tr >
< tr >
< td > Michael Bruce< / td >
< td > Javascript Developer< / td >
< td > Singapore< / td >
< td > 29< / td >
< td > 2011/06/27< / td >
< td > $183,000< / td >
< th > < / th >
< / tr >
< tr >
< td > Donna Snider< / td >
< td > Customer Support< / td >
< td > New York< / td >
< td > 27< / td >
< td > 2011/01/25< / td >
< td > $112,000< / td >
< th > < / th >
< / tr >
< / tbody >
< tfoot >
< tr >
< th > Name< / th >
< th > Position< / th >
< th > Office< / th >
< th > Age< / th >
< th > Start date< / th >
< th > Salary< / th >
< th > Similarity< / th >
< / tr >
< / tfoot >
< / table >
< / div >
< p > The Javascript shown below is used to initialise the table shown in this example:< / p > < code class = "multiline language-js" > $(document).ready(function() {
var table = $('#example').DataTable({
fuzzySearch: {
rankColumn: 6,
threshold: 0.1
}
});
} );< / code >
< / div >
< / section >
< / body >
< / html >
