js中eval的使用可以達到java反射功能
阿新 • • 發佈：2019-01-09
javascript中eval的使用可以達到java反射的效果
<% /********************************************************************** * 工作流附件管理js * 2016-4-8 許暢 新建 **********************************************************************/ %> <!DOCTYPE html> <head> <script src='/xxx/js/jquery-1.5.2.min.js'></script> <script type="text/javascript"> var webRoot= "<%=pageContext.getAttribute("cuiWebRoot") %>"; $(function() { //jquery 選擇器 var selector = "attach"; //附件元素id var attachId = $(selector).attr("id"); var attach = new Attachment(); //附件屬性值陣列 var keys = ["id", "frameHeight", "jobTypeCode", "objId", "displayMode", "operateMode", "relateMode", "operationRight", "title", "hiddenId", "hrefName", "creatorId", "creatorName", "afterUpload", "afterDelete", "afterEditFileName", "isNeeded", "isShowAttachmentType", "showFields", "showExtendAttribute", "icon", "extendClass", "extendParam", "dwrUrl", "readOnly", "returnURL", "queryClass", "extendClassify", "objectIdList", "attachmentTypeIdList", "attachmentTypeControl" ]; for (var i in keys) { var key = keys[i]; var attr = $(selector).attr(key); if (!attr){ continue; } var func = "attach.set" + replaceFirstUper(key) + "('"+attr+"');"; eval(func); } //生成附件 attach.setWebRoot(webRoot); attach.init(attachId); }); //正則將首字元替換為大寫 var replaceFirstUper = function(str) { if(str && str.length>0){ return str.substring(0,1).toUpperCase()+str.substring(1,str.length); } return str; }; </script> </head>