How can we access custom labels in javascript linked as separate static resource in Salesforce?

Hi Mohit,

Custom Labels and the $Label global can be used for this purpose! Instead of evaluating Visualforce inside your JavaScript, you can do a little bit of JavaScript inside your Visualforce.

Load your Custom Labels into the platform using the normal interface,
Create what I like to call a "JavaScript bridging component" that loads before your script, like so:

<script>
window.$Label = window.$Label || {};
$Label.MyError = '{!JSENCODE($Label.MyError)}';
$Label.MyPrompt = '{!JSENCODE($Label.MyPrompt)}';
$Label.MyMessage = '{!JSENCODE($Label.MyMessage)}';
</script>

Now in your javascript (in a static resource) use the variables just as if they were VF without {!}

<script src="{!URLFOR($Resource.ScriptZip, '/my.js')}">
//NOTE: this example code is for clarity,
//really he lives in the static resource
function errorHandler() {
console.log($Label.MyError);
alert($Label.MyMessage);
}
</script>

This is in the spirit of the platform: there is no need to interpret any variation on the token names and you can pluck the values straight out in your JavaScript without inventing anything.

Hope this helps.

• This reply was modified 9 years, 9 months ago by  Kumar.