Javascript API to update a Custom property with a url parameter

Hi there,

I’m trying to build a tag that will update a custom property with a url parameter.
The url parameter is locale=XX where XX is the value to use as custom property.

Here is the code… I'm not a developer so I'm really not sure if this code is developed as desired... what do you think ?

<script>

  var _learnq = _learnq || [];

// Define var locale from url parameter

var str = document.location.href;

var url = new URL(str);

var search_params = new URLSearchParams(url.search); 

if(search_params.has('locale')) {

  var language = search_params.get('locale');

}

// Identifying a person and tracking special Klaviyo properties.

  _learnq.push(['identify', {

    '$email' : '',

    'language' : language

  }]);

</script>

Thanks a lot for the help !