分享一個常用的javascript靜態類別_javascript技巧

util=函數(){
    返回{
        $:函數(id){
            return document.getElementById(id);
        },
        修剪：函數（str）{
            return str.replace(/(^s )|(s $)/g, "");
        },
        長度：函數（str）{  
            return str.replace(/[^x00-xff]/g,'**').length;  
        },
        格式：函數(str){
            var arg = 參數;
            return str.replace(/{(d )}/g, function(m, i){
                return arg[parseInt(i) 1];
            });
        },
        各：函數（對象，回調，參數）{
            var name, i = 0, length = object.length;
            if ( args ) {
                if ( 長度 === 未定義 ) {
                    for (物件中的名稱)
                        if (callback.apply( object[ name ], args ) === false )
                           且所休息；
                } 其他
                    為 ( ; i                         if (callback.apply( object[ i ], args ) === false )
                           且所休息；
            } 其他 {
                if ( 長度 === 未定義 ) {
                    for (物件中的名稱)
                        if (callback.call( 物件[ 姓名 ], 名稱, 物件[ 名稱 ] ) === false )
                           且所休息；
                } 其他
                    for ( var value = object[0];
                                     我         },
        setCookie:函數(名稱、值、時間、路徑、域){
            var str=new String();
            var nextTime=new Date();
            nextTime.setHours(nextTime.getHours() 小時);
            str=name "= escape(值);
            若（小時）
                str =";expires=" nextTime.toGMTString();
            if(路徑)
                str =「;路徑=路徑;
            if(域)
                str =「;域=」域;
            document.cookie=str;
        },
        getCookie:函數(姓名){
            var rs=new RegExp("(^|)" name "=([^;]*)(;|$)","gi").exec(document.cookie),tmp;
            if(tmp=rs)
                返回 unescape(tmp[2]);
            回空；
        },
        delCookie:函數(姓名){
            document.cookie = name "=-1" "; expires=1999 年 12 月 31 日星期五 23:59:59 GMT;";
        },
        /**
        *url 字串
        *parms 字串
        *方法字串預設值「get」
        *asy 布林預設值 true
        *成功函數(http_request.responseText)
        **/
        ajax:函數(配置){
            var url=config.url,
                parms=(config.parms?config.parms:"") "&t=" new Date().getTime(),
                method=config.method||"取得",
                asy=true;
            var http_request=null;
            if(method.toLowerCase()=="get"){
                網址=網址「？」帕爾斯；
                parms=null;
            }
            //開始初始化XMLHttpRequest物件
            if(window.XMLHttpRequest) { //Mozilla 瀏覽器
                http_request = new XMLHttpRequest();
                if (http_request.overrideMimeType) {//設定MiME類別
                    http_request.overrideMimeType("text/xml");
                }
            } else if (window.ActiveXObject) { // IE瀏覽器
                嘗試{
                    http_request = new ActiveXObject("Msxml2.XMLHTTP");
                } catch (e) {
                    嘗試{               
                        http_request = new ActiveXObject("Microsoft.XMLHTTP");
                    } catch (e) {}
                }
            }
            if(!http_request) { // 異常，建立物件實例失敗
                throw new Error("無法建立XMLHttpRequest物件實例.");
                return null;
            }
            http_request.open(method,url,asy);
            http_request.onreadystatechange=function(){
                if (http_request.readyState == 4){
                    try{
                        if (http_request.status == 200){
                            config.success(http_request.responseText);
;                         }
                    }catch(e){
                        throw new Error("資料讀取失敗.");
                    }
                }
            };
            if(method.toLowerCase()=="post"){
                http_request.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
            }
            http_request.send(parms);
        }
    };
}();