标准coffeescript 调用ajax

$.ajax '/',
    type: 'GET'
    dataType: 'html'
    error: (jqXHR, textStatus, errorThrown) ->
        $('body').append "AJAX Error: #{textStatus}"
    success: (data, textStatus, jqXHR) ->
        $('body').append "Successful AJAX call: #{data}"

单个select的调用

  $(document).ready(function() {

    $('#display_arms').change(function(){
      $.ajax({url: 'YOUR URL',
        data: 'display_arms=' + value,
        success: function(data){
          $('#display_arms').html(data);
          }
      })
    });
  });

一组select的onchange

$("form.submit_on_change").each(function(idx,form){
  $(form).find("select,input").each(function(idx,element){
    $(element).change(function(){
      $(form).submit();
      return false;
    });
  });
});

function PopulateDropdown() {
    $.ajax({
        type: "POST",
        url: "../CommonWebService.asmx/GetData",
        data: "{}",
        contentType: "application/json; charset=utf-8",
        dataType: "json",
        success: function (msg) {
            $("select[id^='MyDropDown']").empty();
            $.each(msg.d, function () {
                $("select[id^='MyDropDownSelect']").append($("<option></option>").val(this['IdIndexDataType']).html(this['DataTypeName']));
            }); 
            $("select[id^='MyDropDown']").css("width", "auto");  
        },
        error: function (e1) {
            alert("Error - " + e1.toString());
        }
    });
}

function badFixSelectBoxDataWidthIE() {
    if ($.browser.msie) {
        $('select').each(function() {
            if($(this).attr('multiple') == false) {
                $(this).mousedown(function() {
                    if($(this).css("width") != "auto") {
                        var width = $(this).width();
                        $(this).data("origWidth", $(this).css("width")).css("width", "auto");

                        // If the width is now less than before then undo
                        if($(this).width() < width) {
                            $(this).unbind('mousedown');
                            $(this).css("width", $(this).data("origWidth"));
                        }
                    }
                })

                // Handle blur if the user does not change the value
                .blur(function() {
                    $(this).css("width", $(this).data("origWidth"));
                })

                // Handle change of the user does change the value
                .change(function() {
                    $(this).css("width", $(this).data("origWidth"));
                });
            }
        });
    }
}

if (jQuery.browser.msie) {
  jQuery('#mySelect').focus(function() {
    jQuery(this).width('auto');
  }).bind('blur change', function() {
    jQuery(this).width('100%');
  });
};