id,summary,reporter,owner,description,type,status,priority,milestone,component,version,severity,resolution,keywords,cc,focuses 20558,allow wp_localize_script data to be added to existing objects,ryanve,,"Re: WP_Scripts::localize() located in wp-includes/class.wp-scripts.php Currently when `WP_Scripts::localize()` handles the printing of wp_localize_script data to JavaScript, it starts the string with a `var` declaration, like this: {{{ $script = ""var $object_name = "" . json_encode($l10n) . ';'; }}} Because this is printed in the global scope, it becomes a global variable regardless of whether it's preceded by `var`. As far as JavaScript is concerned the above string would be equivalent to: {{{ $script = $object_name . ' = ' . json_encode($l10n) . ';'; }}} or {{{ $script = 'this.' . $object_name . ' = ' . json_encode($l10n) . ';'; }}} or {{{ $script = 'window.' . $object_name . ' = ' . json_encode($l10n) . ';'; }}} But I suppose it's possible thru hooks to make it so that the localization data prints outside of the global scope, in which case you might want the `var` to be there (if it we're wrapped in a closure). So I think the '''overall best solution''' would to check if the `$object_name` contains a period `.` character. If it does, omit the `var`. In other words, make it so that: {{{ wp_localize_script('myplugin', 'myPluginData', $object ) }}} would print: {{{ var myPluginData = {...}; }}} but that: {{{ `wp_localize_script('myplugin', 'myPlugin.data', $object )` }}} would print: {{{ myPlugin.data = {...}; }}} By default the localization data runs before any enqueued scripts, in which case `myPlugin` would not yet be defined, but we should leave that for the JavaScript dev work out. My point is that the flexiblity should be there. Another route would be to apply a filter on that line but I don't think a filter is necessary if the above change is made.",enhancement,new,normal,,Script Loader,3.3,normal,,dev-feedback needs-patch,,