延迟加载js

application/third_party/htmlcompressor/controllers/index.php

@@ -90,14 +90,14 @@ class Index extends CI_Controller {
 
 //在最后加载原始css文件和js文件
             //把css移动到页面底部，延迟加载
-            $lastload_js = '<script>setTimeout(function(){';
+            $lastload_js = '<script defer>';
             foreach ($link_css_array as $item) {
                 $lastload_js.='var elem=document.createElement("link");elem.rel="stylesheet";elem.type="text/css";elem.href="' . $item . '";document.body.appendChild(elem);';
             }
-            $lastload_js.='},1000);</script>';
+            $lastload_js.='</script>';
             //把js移动到页面底部
             foreach ($link_js_array as $item) {
-                $lastload_js.='<script src="' . $item . '"></script>';
+                $lastload_js.='<script defer  src="' . $item . '"></script>';
             }
             $lastload_js.=$js_content;