常用的JavaScript操作II

//读取指定文件目录的xml文件，返回字符串var readXML = function($xmlFile){//读取用户的安装目录var fos = external.createObject('FileInputStream');var str = '';if (fos.open($xmlFile)) {str = fos.read();fos.close();}return str;};//把数据写入到指定的文件中 var writeXML = function(filename,data){//读取用户的安装目录var fos = external.createObject('FileOutputStream');if (fos.open(filename)) {//alert("haha");fos.write(data);fos.close();}};/** *把xml形式的string转化为xml的DOM格式 *例如：var userXML = $.createXMLDocument(userXmlString);//typeof(userXmlString) = string; */jQuery.createXMLDocument = function(string){var browserName = navigator.appName;var doc;if (browserName == 'Microsoft Internet Explorer') {doc = new ActiveXObject('Microsoft.XMLDOM');doc.async = 'false';doc.loadXML(string);} else {doc = (new DOMParser()).parseFromString(string, 'text/xml');}return doc;}; /** * 把DOM格式的对象转化为字符串 * Converts XML node(s) to string using web-browser features. * Similar to .html() with HTML nodes * This method is READ-ONLY. * * @param all set to TRUE (1,"all",etc.) process all elements, * otherwise process content of the first matched element * * @return string obtained from XML node(s) */ jQuery.fn.xml = function(all) { //result to return var s = ""; //Anything to process ? if( this.length ) //"object" with nodes to convert to string ( ( ( typeof all != 'undefined' ) && all ) ? //all the nodes this : //content of the first matched element jQuery(this[0]).contents() ) //convert node(s) to string .each(function(){ s += window.ActiveXObject ?//== IE browser ? //for IE this.xml : //for other browsers (new XMLSerializer()).serializeToString(this) ; }); return s; }; //">"用2表示 ">="用1表示 "<"用-2表示 "<="用-1表示String.prototype.symbolTrans = function(str) {var s;switch(str){case '2':s = ">";break;case '1':s = ">=";break;case '-1':s = "<=";break;default:s = "<";break;}return s;}//无提示的关闭页面function Close(){var ua = navigator.userAgent;var ie = navigator.appName == "Microsoft Internet Explorer" ? true : false;if(ie) {var IEversion = parseFloat(ua.substring(ua.indexOf("MSIE ") + 5, ua.indexOf(";", ua.indexOf("MSIE "))));if(IEversion < 5.5) { var str = '<object id=noTipClose classid="clsid:ADB880A6-D8FF-11CF-9377-00AA003B7A11">' str += '<param name="Command" value="Close"></object>'; document.body.insertAdjacentHTML("beforeEnd", str); document.all.noTipClose.Click(); } else {window.opener = null;window.close();}}}//对于网站的url地址解析，可以使用已有的jquery插件，jget，非常方便的解析出网址的元素。var url = $.jget['var1'];$.debug(url);jQuery.extend({//start the jget Objectjget: {},//get the url,//用户可以在这里自行定义字符串url: unescape(window.location.href).replace(/^[^/?]+/??/,''),//get the queryStringparseQuery: function(query) {var Params = {},if (!query) {return Params;//return empty Object}var Pairs = query.split(/[;&]/);for (var i = 0; i < Pairs.length; i++) {var KeyVal = Pairs[i].split('=');if (!KeyVal || KeyVal.length != 2) {continue;}var key= unescape( KeyVal[0] );var value = unescape( KeyVal[1] );val = val.replace(//+/g, '');Params[key] = val;}return Params;},//Make the jget Object available to jQuery.extendgetQueryString : function() {this.jget = this.parseQuery(this.url);}//debuggingdebug: function(message) {if (!$.browser.msie) {console.info(message);} else if ($.browser.safari) {window.console.log(message);} else {alert(message);}}});//start the plugin$.getQueryString(); 这个js文件是一个公共文件：