The ajax request getJSON not working well with version 1.4

I use a function that works very well with 1.3.2.

$ (function () (

$. getJSON ( "/ json / getidclc =" + $ ( 'select # idclc'). val (), function (j) (

var options = '<option value="0"> No subcategory </ option>';

for (var i = 0; i <j.length; i + +) (

options + = '<option value='" j[i].optionValue + +'">' + j [i]. optionDisplay + '</ option>';

)

$ ( "select # idcls"). html (options);

));

$ ( "select # idclc"). change (function () (

$. getJSON ( "/ json / getidclc =" + $ (this). val (), function (j) (

var options = '<option value="0"> No subcategory </ option>';

for (var i = 0; i <j.length; i + +) (

options + = '<option value='" j[i].optionValue + +'">' + j [i]. optionDisplay + '</ option>';

)

$ ( "select # idcls"). html (options);

));

));

));