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.