Here is a simple trick to remove a particular value from your array:
// from this (6 items)
var arr = ['remove', 'specific', 'value', 'from', 'javascript', 'array'];
// to this ("specific" value removed)
var arr = ['remove', 'value', 'from', 'javascript', 'array'];
// use this (removes "specific")
arr.splice(arr.indexOf('specific'), 1);
// full example
var arr = ['remove', 'specific', 'value', 'from', 'javascript', 'array'];
var value_to_remove = 'specific';
arr.splice(arr.indexOf(value_to_remove), 1);