!358 解决IE11上传预览不显示的问题

Merge pull request !358 from 网游之鱼/master

ruoyi-admin/src/main/resources/static/ajax/libs/bootstrap-fileinput/fileinput.js

@@ -45,6 +45,13 @@
         };
     }
     
+    if (!document.currentScript) {
+    	document.currentScript = function() {
+    		var scripts = document.getElementsByTagName('script');
+    	    return scripts[scripts.length - 1];
+    	}();
+	}
+
     var $h, FileInput, getLoadingUrl = function () {
         var src = document.currentScript.src, srcPath = src.substring(0, src.lastIndexOf("/"));
         return srcPath + '/loading.gif'