Question

How to display once elements of array ?. For example

var array = ["b","c","c","a","d","e","a","d"]

show => ["a","b","c","d","e"] ?

Any example ?

Answer 1

Use the array_unique() function to remove the duplicates and sort – http://php.net/manual/en/function.array-unique.php

Following up with the array_values() function will remove the gaps in the array index – http://php.net/manual/en/function.array-values.php

// initialize array
var $array = array("b","c","c","a","d","e","a","d");
// remove duplicates and sort by string value
$array = array_unique($array, SORT_STRING);
// reindex array (numeric index will have gaps where the duplicates where removed)
$array = array_values($array);
// show results
print_r($array);

In Javascript/jQuery you can use the unique() and sort() methods

// initialize array
var array = ["b","c","c","a","d","e","a","d"];
// remove duplicate values
array.unique();
// sort remaining items
array.sort();

If you are sorting numbers in Javascript, you would need to pass a function, as the array is sorted lexicographically be default

array.sort(function(a,b){return a - b;});