将JSON从php传递给javascript

Question

I want to localize my webapp. Since localization through javascript only is not recommended I thought using php would be an alternative.

So with php I read a messages.json file that stores all localization data.

$json = file_get_contents("_locales/en/messages.json");

In the header of my webapp I generate some javascript with php according to the user's browser language.

echo "var localeObj = " . $json . ";";

So this is just a var that holds all data from the messages.json file that looks like that

{
    "extTitle": {
        "message": "Test1"
    },
    "extName":{
        "message": "Test2"
    }
}

Now I want to be able to access each item from the json like

var title = getItem("extTitle");

and it returns Test1. Any idea how to do that?

I am not very familar with json but if I just alert the localeObj it gives me just [object Object].

Answer 1

var getItem = function(item) {
   return localObj[item].message;
};

You could always encapsulate your i18n strings too...

(function() {

   var localObj = { ... };

   window.getItem = function(item) {
       return localObj[item].message;
   };

})();

This way, no other variables can possibly clobber your localObj.