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;
   }

获取样式　　

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

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)
  }

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;
}

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

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;
}

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;
}
}

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;
}

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; 

}