CODEWITHSUNDEEP
phpjavascriptjqueryjson
DarkLeafyGreen
DarkLeafyGreen

Reputation: 70416

Pass JSON from php to javascript

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].

Upvotes: 4

Views: 6233

Answers (4)

Tarun Nagpal
Tarun Nagpal

Reputation: 964

You can initialize javascript variable like this.

var json = eval(<? echo $json ?>);   
alert(json.extTitle.message+ '  '+json.extName.message);

Upvotes: 1

alex
alex

Reputation: 490243

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.

Upvotes: 4

jbcurtin
jbcurtin

Reputation: 1803

Inside messages.php:

<?php
header('Content-type:application/javascript');
$messages = array(
 "yes"=>"hai",
 "no"=>"iie"
);
$messages = json_encode($messages);
echo "window.messages = $messages";
?>

Inside index.html:

<html>
 <body>
 <script type="text/javascript" src="messages.php"></script>
 <script type="text/javascript">
  console.log(window.messages)
 </script>
 </body>
</html>

As long as you tell the browser to interpret the php file as a javascript file, you can echo anything you want.

Upvotes: 0

Alex
Alex

Reputation: 65942

You use array syntax [], or dot syntax ., to access javascript object properties.

Example:

localeObj["extTitle"];
localeObj.extTitle;

I would recommend reading something like this to get more familier with JSON.

Upvotes: 1

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