A good way for JavaScript to interpret the JSON returned by Ajax

Typically, the AJAX request returns the format JSON or XML, and if it returns JSON, it can be manipulated by converting it to a JavaScript object, as follows:

1, the controller implementation of the AJAX request

@RequestMappingpublic void Getlocations (@RequestParam String location, PrintWriter printwriter) {if ( Stringutils.isempty (location)) {return;} list<location> locations = locationservice.getsublocation (location); String json = Json.tojson (locations);p Rintwriter.write (JSON);p Rintwriter.flush ();p rintwriter.close ();}

A location is a bean that contains multiple properties, such as PName, Zname.

2. AJAX processing requests and return values

$.ajax ({type: "GET", url: "/admin/location/getlocations.do", Data: "location=" + val,success:function (msg) {msg = eval ( msg); region = $ ("#region"); Region.empty (); vHtml = "<option value= ' None ' > select area (optional) </option>"; $.each (MSG, function (i) {var $bean = msg[i];vhtml + = ' <option value= "' + $bean. PName + '" "> ' + $bean. Zname + ' </option> ';} ); region.html (vHtml);}});

MSG is originally a JSON string that uses the Eval function to turn a string into a JavaScript object, so that you can get the property value like an object.

　　

A good way for JavaScript to interpret the JSON returned by Ajax