/*  *YYJ.js 主要提供后台应用方法  *目前有Ajax、addLoadEvent、deleteAll、getByClass、$C(=getByClass)、$、yyjtable、setCss、getCss、iaArray等方法。最后面还提供了一个  *可实例化的方法YYJ.tick用来计算脚本运行时间  *版本0.1    --tianyi    yyj  */  var YYJ=function(){      var UniqueInstance;      function constrotor(){          return {              //ajax方法              Ajax:function(method,url,data,success,fail){                  var isget=method.toLowerCase()=="get";                  var xmlhttp=window.XMLHttpRequest?new XMLHttpRequest():new ActiveXObject("Microsoft.XMLHTTP");                  xmlhttp.open(method,url,true);                  if(!isget)xmlhttp.setRequestHeader("Content-Type","application/x-www-form-urlencoded");                  xmlhttp.onreadystatechange=function(){                          if(xmlhttp.readyState==4){                              if(xmlhttp.status==200){                                  if(success)success(xmlhttp);                              }else{                                  if(fail)fail(xmlhttp);                              }                          }                  };                  xmlhttp.send(isget?null:data);              },//Ajax              addLoadEvent:function(func) {                  var oldonload = window.onload;                  if (typeof window.onload != 'function') {                      window.onload = func;                  } else {                      window.onload = function() {                        if (oldonload) {                          oldonload();                        }                        func();                      }                  }              },//addLoadEvent              deleteAll:function(checkallbtn,checksomebtn,submitbtn){                  var checkall=YYJ.$(checkallbtn);                  var checksome=YYJ.$(checksomebtn);                  var submit1=YYJ.$(submitbtn);                  var checkboxs=(function(){                      var arr=[];                      var check=document.getElementsByTagName("input");                      for(i=0;i<check.length;i++){                          if(check[i].getAttribute("type")!="checkbox")                              continue;                          arr.push(check[i]);                      }                      return arr;                  })();                  checkall.onclick=function(){                      checkall.clicked=true;                      for(var i=0;i<checkboxs.length;i++){                          if(!checkboxs[i].checked){                              checkall.clicked=false;                              break;                          }                      }                      if(!checkall.clicked){                          for(var i=0;i<checkboxs.length;i++){                              checkboxs[i].checked=true;                          }                      }else{                          for(var i=0;i<checkboxs.length;i++){                              checkboxs[i].checked=false;                          }                      }                  }                  checksome.onclick=function(){                      for(var x in checkboxs){                          checkboxs[x].checked=!checkboxs[x].checked;                      }                  }                  submit1.onclick=function(){                      var haschecked=false;                      var beSureDel=false;                      for(var i=0;i<checkboxs.length;i++){                          if(checkboxs[i].checked){                              haschecked=true;                              break;                          }                      }                      haschecked?function(){                          beSureDel=confirm("确定要删除选中项吗？");                      }():function(){                          alert("没有选中项！");                          beSureDel=false;                      }();                      return beSureDel;                  }              },//deleteall              getByClass:function(classname,parent,nodename){                  var s=(parent||document).getElementsByTagName(nodename||"*");                  return function(){                      var a=[];                      for(var i=0,j=s.length;i<j;i++){                          if(!s[i].className) continue;                          var name=" "+s[i].className+" ";                          if(name.indexOf(" "+classname+" ")!=-1){                              a.push(s[i]);                          }                      }                      return a;                  }();              },              $C:function(classname,parent,nodename){                  return YYJ.getByClass(classname,parent,nodename);              },//getByClass              $:function(str){                  return document.getElementById(str);              },//getById              yyjtable:function(tableId){                  var tbl=YYJ.$(tableId);                  var trs=tbl.getElementsByTagName("tr");                  for(var i=1;i<trs.length;i++){                      if(i%2!=0){                          trs[i].style.backgroundColor="#FFFFF0";                      }else{                          trs[i].style.backgroundColor="white";                      }                      trs[i].onmouseover=function(){                          this.col1=this.style.backgroundColor;                          this.style.backgroundColor="#FFFACD";                      }                      trs[i].onmouseout=function(){                          this.style.backgroundColor=this.col1;                      }                  }              },//yyjtable              /*使用方法              YYJ.setCss([YYJ.$("table1")],{                  color:"red",                  backgroundColor:"silver"              });*/              setCss:function(eles,opt){                  if(!eles||!opt)return;                  if(!eles.length){                      throw new Error("setCss的第一个参数要求为数组！");                  }                  for(var i=0;j=eles[i];i++){                      try{                          for(var x in opt){                              j.style[x]=opt[x];                          }                      }catch(ex){}                  }              },//setCss              /*使用方法              var css=YYJ.getCss(YYJ.$("table1"),["backgroundColor"]);              alert(css["backgroundColor"]);*/              getCss:function(ele,opt){                  if(!this.isArray(opt)){                      throw new Error("getCss的第二个参数要求为string数组！");                  }                  var css={};                  for(var i=0,j=opt.length;i<j;i++){                      try{                          css[opt[i]]=ele.style[opt[i]];                      }catch(ex){}                  }                  return css;              },//getCss              isArray:function(opt){                  return Object.prototype.toString.call(opt)=="[object Array]"              }          };      }      function getUniqueInstance(){          if(UniqueInstance){              return UniqueInstance;          }          UniqueInstance=constrotor();          return UniqueInstance;      }      return getUniqueInstance();  }();  //脚本执行时间  /*使用方法  var ti=new YYJ.ticks();  ti.begin();  代码段  ti.end();  alert(ti.tick);*/  YYJ.ticks=function(){      var starttick,stoptick;      return function(){          this.begin=function(){              starttick=new Date();          }          this.end=function(){              stoptick=new Date();              this.tick=stoptick-starttick;          }      }  }();