js处理服务器返回的对象

js处理服务器返回的对象

格式一：

{
firstname:"Bruce",
lastname:"Perry",
gender:"M",
country:"USA"
}

代码片段：

function  handleJson(  ){
     if (request.readyState  ==   4 ){
         if (request.status  ==   200 ){
             var  resp  =   request.responseText;
             var  func  =   new  Function( " return  " + resp);
             var  objt  =  func(  );
             var  div  =  document.getElementById( " json " );
            stylizeDiv(resp,div);
            div  =  document.getElementById( " props " );
            div.innerHTML = " <h4>In object form</h4> " +
                           " <h5>Properties</h5>firstname=  " +
                          objt.firstname  + " <br />lastname= " +
                          objt.lastname +   " <br />gender= " +
                          objt.gender +   " <br />country= " +
                          objt.country;
        }  else  {
            alert( " A problem occurred with communicating between  " +
                  " the XMLHttpRequest object and the server program. " );
        }
    } // end outer if
}

 

格式二：

[
 "basketball","football"
]


代码片段：

// event handler for XMLHttpRequest
function  handleResponse() {
    try{
        if(request.readyState == 4){
            if(request.status == 200){
                var resp =  request.responseText;
              
                if(resp != null){
                    //return value is a JSON array
                    var objt = eval(resp);
                    
                    createChecks(objt);
                }
            } else {
                //request.status is 503  if the application isn't available;
                //500 if the application has a bug
                alert(
                        "A problem occurred with communicating between"+
                        " the XMLHttpRequest object and the server program.");
            }
        }//end outer if
    } catch (err)   {
        alert("It does not appear that the server "+
              "is available for this application. Please"+
              " try again very soon. \nError: "+err.message);

    }
}