Getting List Using Foreach In Javascript Inside Php Codeigniter

I have a JS function inside my PHP view file. What I want to do is enable a button when the function verifies that the input does not exist in the database. So here's my function:

Solution 1:

Look at your HTML-Code that is generated than you see your mistake.

If you have for example a Array ["name" => "test"], ["name" => "test2"] than you view generates the following HTML:

if ($('#edit-name').val() == 'test') {
            name = 0;
            $('#warning').html('Name already exists');
        }

        else {
            $('#warning').html('');
            name = 1;
        }


        if ($('#edit-name').val() == 'test1') {
            name = 0;
            $('#warning').html('Name already exists');
        }

        else {
            $('#warning').html('');
            name = 1;
        }

You see "else" is always true.

You need to write:

<?$stringarray = "";

 foreach($name_listas$list){
   $stringarray .= '"'.$list->name.'",';
 }

 // Del last ,$stringarray = substr($stringarray,0,-1);
 ?>var names = [<?phpecho$stringarray;?>];
 if (names.indexOf($('#edit-name').val()) != -1) {
            name = 0;
            $('#warning').html('Name already exists');
        }else {
            $('#warning').html('');
            name = 1;
        }