我的js函数库（持续更新）

1. 常用js初始化函数
   • 　

     function id(obj) {
         return document.getElementById(obj);
     }
     function bind(obj, ev, fn) {
         if (obj.addEventListener) {
             obj.addEventListener(ev, fn, false);
         } else {
             obj.attachEvent('on' + ev, function() {
                 fn.call(obj);
             });
         }
     }
     function view() {
         return {
             w: document.documentElement.clientWidth,
             h: document.documentElement.clientHeight
         };
     }
     function addClass(obj, sClass) {
         var aClass = obj.className.split(' ');
         if (!obj.className) {
             obj.className = sClass;
             return;
         }
         for (var i = 0; i < aClass.length; i++) {
             if (aClass[i] === sClass) return;
         }
         obj.className += ' ' + sClass;
     }
     
     function removeClass(obj, sClass) {
         var aClass = obj.className.split(' ');
         if (!obj.className) return;
         for (var i = 0; i < aClass.length; i++) {
             if (aClass[i] === sClass) {
                 aClass.splice(i, 1);
                 obj.className = aClass.join(' ');
                 break;
             }
         }
     }

2. getByClass(oParent, sClass)

•  function getByClass(oParent, sClass)
   {
   var aEle=oParent.getElementsByTagName('*');
   var aResult=[];
   var i=0;
  
   for(i=0;i<aEle.length;i++)
   {
   if(aEle[i].className==sClass)
   {
   aResult.push(aEle[i]);
   }
   }
  
   return aResult;
   }

3. 获取样式　　

   1. function getStyle(obj,attr)
      {
      if(obj.currentStyle)
      {
      return obj.currentStyle[attr];
      }
      else
      {
      return getComputedStyle(obj,false)[attr];
      }

4. 完美运动框架

   • function getStyle(obj,attr)
     {
     if(obj.currentStyle)
     {
     return obj.currentStyle[attr];
     }
     else
     {
     return getComputedStyle(obj,false)[attr];
     }
     }
     function move(obj,json,fn)
     {
     clearInterval(obj.timer);
     
     obj.timer=setInterval(function(){
     var bStop=true;
     for(attr in json)
     {
     //设定初始值
     var iCur=0;
     if(attr=='opacity')
     {
     iCur=parseInt(parseFloat(getStyle(obj,attr))*100);
     }
     else
     {
     iCur=parseInt(getStyle(obj,attr));
     }
     //设定速度
     var iSpeed=(json[attr]-iCur)/8;
     iSpeed=iSpeed>0?Math.ceil(iSpeed):Math.floor(iSpeed);
     if(iCur!==json[attr])
     {
     bStop=false;
     
     }
     
     if(attr=='opacity')
     {
     obj.style.filter="alpha(opacity:"+(iCur+iSpeed)+')';
     obj.style.opacity=(iCur+iSpeed)/100;
     }
     else
     {
     obj.style[attr]=iCur+iSpeed+'px';
     }
     }
     
     if(bStop)
     {
     clearInterval(obj.timer);
     
     if(fn)
     {
     fn();
     }
     }
     
     },30)
     }

5. Js获取页面地址参数

   代码如下:

   function getUrlPara(paraName)
   {
   var sUrl = location.href;
   var sReg = "(?://?|&){1}" + paraName + "=([^&]*)"
   var re = new RegExp(sReg, "gi");
   re.exec(sUrl);
   return RegExp.$1;
   }

6. 地址跳转

   代码如下:

   var pn = $("#gotopagenum").val();//#gotopagenum是文本框的id属性
   location.href = "NewList.aspx?pagenum="+pn;//location.href实现客户端页面的跳转

7. 千分位

    代码如下:

   function Convert(money)
   {
   var s = money; //获取小数型数据
   s += "";
   if (s.indexOf(".") == -1) s += ".00"; //如果没有小数点，在后面补个小数点和00
   if (/\.\d$/.test(s)) s += "0"; //正则判断
   while (/\d{4}(\.|,)/.test(s)) //符合条件则进行替换
   s = s.replace(/(\d)(\d{3}(\.|,))/, "$1,$2"); //每隔3位添加一个
   return s;
   }

8. 判断是否数字

    代码如下:

   function IsNumeric(txt) {
   if (txt == "") {
   return false;
   } 
   
   if (txt.indexOf(",") > 0) {
   txt = txt.replace(",", "");
   } 
   
   if (isNaN(txt)) {
   return false;
   }
   else {
   return true;
   }
   }

9. 将数字进行两位小数的格式化

    代码如下:

   function changeTwoDecimal_f(x) {
   var f_x = parseFloat(x);
   if (isNaN(f_x)) {
   alert('function:changeTwoDecimal->parameter error');
   return false;
   }
   f_x = Math.round(f_x * 100) / 100;
   var s_x = f_x.toString();
   var pos_decimal = s_x.indexOf('.');
   if (pos_decimal < 0) {
   pos_decimal = s_x.length;
   s_x += '.';
   }
   while (s_x.length <= pos_decimal + 2) {
   s_x += '0';
   }
   return s_x;
   }

10. Js 进行数字运算的函数 parseFloat parseInt

    js 当前日期 yyyy-mm-dd 预置查询条件

     代码如下:

    var now = new Date();
    var year = now.getYear(); 
    
    if (now.getYear() < 1900) {
    year = now.getYear() + 1900;
    } 
    
    var month = now.getMonth() + 1;
    var day = now.getDate(); 
    
    if (month < 10) month = "0" + month;
    if (day < 10) day = "0" + day; 
    
    $("#txtDate1").val(year.toString() + "-" + month.toString() + "-01");
    $("#txtDate2").val(year.toString() + "-" + month.toString() + "-" + day.toString());

    Js 获取时间戳，在某些情景下代替Guid

     代码如下:

    function NowTimeCode()
    {
    var Result=""; 
    
    var now = new Date(); 
    
    var year = now.getYear(); 
    
    if (now.getYear() < 1900) {
    year = now.getYear() + 1900;
    } 
    
    var month = now.getMonth() + 1;
    var day = now.getDate();
    var hour = now.getHours();
    var minutes = now.getMinutes();
    var second = now.getSeconds();
    var millisecond = now.getMilliseconds(); 
    
    if (month < 10) month = "0" + month;
    if (day < 10) day = "0"+ day;
    if (hour < 10) hour = "0"+ hour;
    if (minutes < 10) minutes = "0"+ minutes;
    if (second < 10) second = "0"+ second; 
    
    if (millisecond < 10)
    millisecond = "00"+ millisecond;
    else
    {
    if (millisecond < 100)
    {
    millisecond = "0"+ millisecond;
    }
    } 
    
    Result = year.toString() + month.toString() + day.toString() + hour.toString() + minutes.toString() + second.toString() + millisecond.toString(); 
    
    return Result; 
    
    }