Uncaught TypeError: $selectableSearch.quicksearch is not a function

[akambaram]

validatelgn:101 Uncaught TypeError: $selectableSearch.quicksearch is not a function at MultiSelect.afterInit (validatelgn:101) at MultiSelect.init (jquery.multi-select.js:94) at HTMLSelectElement. (jquery.multi-select.js:519) at Function.each (jquery-2.1.4.js:374) at jQuery.fn.init.each (jquery-2.1.4.js:139) at jQuery.fn.init.$.fn.multiSelect (jquery.multi-select.js:509) at loadMultiselect (validatelgn:87) at getUSersByRegion (validatelgn:173) at HTMLDocument. (validatelgn:78) at fire (jquery-2.1.4.js:3099)

[connorpwilliams]

Have you included the quickSearch plugin?

Stated above the quicksearch demo:

Note: This feature is not built-in but depends on an other plugin. I personnally use the excellent quicksearch library, but you can use whatever library you like.