Javascript在IE和Firefox下的兼容

 

 

(1) 不要使用document.all.ID来访问页面上的元素，应该改用document.getElementById('ID')

     Tip:

             In VS2005, if you want to "replace document.all.ID." with "document.getElementById('ID')."

             Then in the find input enter :     document.all.{.*}.

                     in the replace input enter: document.getElementById('/1').

 

(2) Window.frames['frame_name'].location也不能使用，应该使用window.frame_name.location

 

更多的访问： http://www.playes.net/Blog/332.asp

 

javascript获取radio和checkbox的值的方法：

var element = document.getElementsByName('element_name');

var cnt = element.lenght;

var retValue = '';

for (var i = 0; i < cnt; i++)

{

     if (element[i].checked)

     {

            retValue = element[i].value;

            break;

     }

}

// retValue is what we want.

 

 

javascript获取下拉框的值(value)和显示值(text)

var selectElement = document.getElementById('select_id');

var retValue = selectElement.value;

var retText = selectElement.options[selectElement.selectedIndex].text;

 

Ajax in asp.net

(1) include ajax.dll into the project.

(2) Register ajax class in the Page.onLoad(Of course, any other place before u use it)

     Ajax.Utility.RegisterTypeForAjax(typeof(Class_Name));

(3) Declare Ajax method in c#

     [Ajax.AjaxMethod()]

     public string FunctionName(int id)

     {

            //.............

            return 'hello';

     }

(4) Call Ajax method in javascript

     function ButtonOnClick()

     {

          Class_Name.FunctionName(id, FunctionName_CallBack);

     }

(5) Define Callback function in javascript

     function FunctionName_CallBack(response)

     {

           if (null != response.error)

           {

                 // Error

           }

            else

            {

                 // The value of response.value is 'hello'

            }

     }

 ------补充

(6) In Web.config Add:

  <httpHandlers>
      <add verb="POST,GET" path="ajax/*.ashx"
          type="Ajax.PageHandlerFactory, Ajax" />
    </httpHandlers>