could not make $.get and $.post ajax calls

The purpose of the code is just to make $.get and $.post ajax request on change event of the select element and make a callback to retrieve some values. It is not intended to do anything good. It is just a practice code.

It seems no $.get and $.post ajax calls are not achieved. Why?

//testjquery.js file is in /modulepath/
if (Drupal.jsEnabled){
$(document).ready(function(){

   if ($("#edit-name").val() > 0){
       selectchange($("#edit-name").val());}
});

function selectchange(namefieldvalue) {
  $.get("test", { func: "getname" }, function(data){
	  var result = Drupal.parseJson(data);
	  $('div.name').html(result['name']);});
}
}

<?php

function testjquery_menu($may_cache) {
  $items = array();
  if($may_cache){
      $items[] = array('path' => 'testjquery',
      'title' => t('Test Jquery'),
      'callback' => 'drupal_get_form',
      'callback arguments' => array('testjquery_form'),
      'access' => user_access('make testjquery'));
      $items[] = array(
      'path' => 'test',
      'title' => t('Test Case'),
      'callback' => 'testjquery',
      'access' => user_access('make testjquery'));
     }  
  return $items;
}
function testjquery_form(){ 
  drupal_add_js(drupal_get_path('module','testjquery').'/testjquery.js');
  print_r( "<div class='name'></div>");
  $form['name'] =  array(  
     '#type' => 'select', 
     '#id' => 'edit-name',
     '#title' => t('Jquery Practice'),
     '#options' => array('option1','option2','option3'),
    '#attributes' => array('onchange' => 'selectchange(this.value);'),
  );
  return $form;
}
function testjquery() {
   print drupal_to_js(array('name'=>'JQuery Seems Good'));
}
........