# _script_loader.html 　　其文件路径为：horizon\horizon\templates\horizon\client_side\_script_loader.html。将它复制到我们的主题目录中：horizon\openstack_dashboard\themes\maintenance\templates\horizon\client_side\_script_loader.html。它里面的代码为： ~~~ <script type="text/javascript" charset="utf-8"> /* Added so that we can append Horizon scoped JS events to the DOM load events without running in to the "horizon" name-space not currently being defined since we load the scripts at the bottom of the page. */ var addHorizonLoadEvent = function(func) { var old_onload = window.onload; if (typeof window.onload != 'function') { window.onload = func; } else { window.onload = function() { old_onload(); func(); } } } </script> ~~~ 　　这里面的代码，我们不需要动的，所以这个文件也不需要放进我们的主题中，直接用默认的就行了。