php - how to change local language from view in laravel? -

so worked in multi language project in laravel, create files in lang folder , when change language change successfully, when tried change view doesn't work, code change local language :

<li><a onclick="{{app::setlocale('fr');}};location.reload(true);">francais</a></li>  <li><a onclick="{{app::setlocale('en');}};location.reload(true);">english</a></li> 

app::setlocale('en'); isn't generate js code change language, set language current application, renders view.