小型js框架veryide.librar源代码

/* 
* Copyright VeryIDE,2007-2008 
* http://www.veryide.com/ 
* 
* $Id: veryide.library.js,v2.3 17:29 2008-11-16 leilei $ 
*/ 
function $(obj){return document.getElementById(obj);} 
function $N(obj){return document.getElementsByName(obj);} 
function $T(obj){return document.getElementsByTagName(obj);} 

function $V(str){document.write(str);} 

//body load 
function addLoadEvent(func) { 
var oldonload = window.onload; 
if (typeof window.onload != 'function') { 
window.onload = func; 
} else { 
window.onload = function() { 
oldonload(); 
func(); 
} 
} 
} 

//object event 
function addObjectEvent(ele,evt,func){ 
var oldonevent = ele['on'+evt]; 
if (typeof ele['on'+evt] != 'function') { 
ele['on'+evt] = func; 
} else { 
ele['on'+evt] = function(event) { 
oldonevent(event); 
func(event); 
} 
} 
} 

//key event 
function addKeyEvent(key,func){ 
if(!VeryIDE.tmpKey){ 
VeryIDE.tmpKey=[]; 
} 

VeryIDE.tmpKey["k"+key]=func; 
} 

addKeyEvent.Listener=function(e,test){ 
var event=e||window.event; 
if(VeryIDE.tmpKey["k"+event.keyCode]){ 
VeryIDE.tmpKey["k"+event.keyCode](event); 
} 
if(test){ 
alert(event.keyCode); 
} 
} 
//onkeydown判断charCode/keyCode 

//获取对象 
function getObject(o){ 
if(typeof(o)!="object"){ 
var o=$(o); 
} 
return o; 
} 

/* 
String.prototype.trim = function(){ 
return this.replace(/(^\s+)|\s+$/g,""); 
} 
*/ 

String.prototype.Trim = function(){ 
return this.replace(/(^\s*)|(\s*$)/g, ""); 
} 
String.prototype.LTrim = function(){ 
return this.replace(/(^\s*)/g, ""); 
} 
String.prototype.Rtrim = function(){ 
return this.replace(/(\s*$)/g, ""); 
} 

//返回字符串字节数 
String.prototype.long = function(){ 
var i; 
var l = this.length; 
var len; 
len = 0; 
for (i=0;i<l;i++){ 
if (this.charCodeAt(i)>255) 
len+=2; 
else 
len++; 
} 
return len; 
} 

//检查在数组内是否存在某值 
function inArray(a,v) { 
var l = a.length; 
for(var i=0; i<=l; i++) { 
if(a[i]==v) return true; 
} 
return false; 
} 

//class为*的所有元素 
document.getElementsByClassName = function() { 
var children = document.getElementsByTagName('*') || document.all; 
var elements = new Array(); 
var len = children.length; 

for (var i = 0; i < len; i++) { 
var child = children[i]; 
var classNames = child.className.split(' '); 
for (var j = 0; j < classNames.length; j++) { 
for (var k = 0; k < arguments.length; k++) { 
if (classNames[j] == arguments[k]) { 
elements.push(child); 
break; 
} 
} 
} 
} 

return elements; 
} 

//ID以*开头的所有元素 
document.getElementsByPrefix = function(prefix) { 
var children = document.getElementsByTagName('*') || document.all; 
var elements = new Array(); 
var len = children.length; 

for (var i = 0; i < len; i++) { 
var child = children[i]; 
var eid = child.id; 
if(eid&&eid.indexOf(prefix)>-1) 
elements.push(child); 
} 

return elements; 
} 

/*查找页面Meta*/ 
function getMeta(name,att){ 
metatags = document.getElementsByTagName("meta"); 
for (cnt = 0; cnt < metatags.length; cnt++){ 
if(metatags[cnt].getAttribute("name")==name){ 
if(!att){ 
return metatags[cnt]; 
}else{ 
return metatags[cnt].getAttribute(att); 
} 
}else{ 
return null; 
} 
} 
} 

//加载新脚本 
function loadScript(src,target){ 
if(!target){ 
var root=$T("HEAD")[0]; 
}else{ 
var root=getObject(target); 
} 

var script=document.createElement("script"); 
script.type="text/javascript"; 
script.src=src; 

var code=arguments[2]; 
if(code){ 
script.charset=code; 
} 

root.appendChild(script); 
} 

//取得文件名 
function getFileName(url){ 
var strUrl=location.href; 
if(url){ 
strUrl=url; 
} 
var arrUrl=strUrl.split("/"); 
var strPage=arrUrl[arrUrl.length-1]; 
return strPage; 
} 

//对象绝对位置 
function getPosition(obj){ 
var obj=getObject(obj); 

this.width=obj.offsetWidth; 
this.height=obj.offsetHeight; 
this.top=obj.offsetTop; 
this.left=obj.offsetLeft; 
while(obj=obj.offsetParent){ 
this.top+=obj.offsetTop; 
this.left+=obj.offsetLeft; 
} 
} 

function getSelect(obj){ 
var obj=getObject(obj); 

this.value=""; 
this.text=""; 
this.index=""; 

if(obj.length>0){ 
this.value=obj[obj.selectedIndex].value; 
this.text=obj[obj.selectedIndex].text; 
this.index=obj.selectedIndex; 
} 
this.getAtt=function(att){ 
return obj[obj.selectedIndex].getAttribute(att); 
} 
} 

// 
function getRadio(obj){ 
var obj=$N(obj); 
var len = obj.length; 

this.value=""; 
for(var i=0;i<len;i++){ 
if(obj[i].checked==true){ 
this.value=obj[i].value; 
break; 
} 
} 
} 
//对象显示隐藏 
function showHide(obj){ 
var obj=getObject(obj); 
if(obj){ 
if(obj.offsetHeight==0||obj.style.display== "none") {obj.style.display = "block";}else{obj.style.display = "none";} 
} 
} 

function setCheckBox(obj,v){ 
var obj=$N(obj); 

if(obj[0]){ 
var len = obj.length; 
for(var i=0;i<len;i++){ 
if(obj[i].value==v){ 
obj[i].checked=true; 
}else{ 
obj[i].checked=false; 
} 
} 
}else{ 
obj=$(obj); 
if(obj.value==v){ 
obj.checked=true; 
}else{ 
obj[i].checked=false; 
} 
} 
} 

//选择列表项 
function setSelect(obj,v){ 
var obj=$(obj); 
var len = obj.length; 
for(var i=0;i<len;i++){ 
if(obj[i].value == v){ 
obj.selectedIndex=i; 
break; 
} 
} 
} 

//选择单选项 
function setRadio(o,v){ 
var obj=$N(o); 
var len = obj.length; 
for(var i=0;i<len;i++){ 
if(obj[i].value == v){ 
obj[i].checked=true; 
break; 
} 
} 
} 

//禁用对象 
function setDisabled(obj,b){ 
var obj=getObject(obj); 
if (obj){obj.disabled=b;} 
} 

function setClass(obj,Class,Type){ 
var obj=getObject(obj); 
if(obj){ 
switch(Type){ 
case "+": 
obj.className+=" "+Class; 
break; 

case "-": 
obj.className=obj.className.replace(Class,""); 
break; 

case "": 
obj.className=Class; 
break; 

} 
} 
} 

//新建连续下接列表项 
function newNumOption(obj,s,e,t){ 
var obj=getObject(obj); 
if(t=="new"){obj.length=0;} 
for(var i=s;i<(e+1);i++){ 
obj.options[obj.length] = new Option(i,i); 
} 
} 

//删除对象 
function delElement(obj){ 
var obj=getObject(obj); 
var p=obj.parentNode; 
p.removeChild(obj); 
} 

//确认操作 
function getConfirm(info){ 
if(!confirm(info)){return false} 
} 

//新窗口打开链接 
//rel="_blank" 
function _blank(){ 
var anchors = document.getElementsByTagName("A"); 
var len = anchors.length; 
for (var i=0; i<len; i++) { 
var anchor = anchors[i]; 
if (anchor.getAttribute("href") && anchor.getAttribute("rel") == "_blank"){ 
anchor.target = "_blank"; 
} 
} 
} 

//获取URL参数 
function getQuery(n,url){ 
if(!url){ 
var url=location.href; 
} 

var v = ''; 
var o = url.indexOf(n+"="); 
if (o != -1){ 
o += n.length + 1 ; 
e = url.indexOf("&", o); 
if (e == -1){ 
e = url.length; 
} 
v = unescape(url.substring(o, e)); 
} 

//seo 
if(!v){ 
var o = url.indexOf(n+"-"); 
if (o != -1){ 
o += n.length + 1 ; 
e = url.indexOf("-", o); 
if (e == -1){ 
e = url.length; 
} 
v = unescape(url.substring(o, e)); 
} 
} 

return v; 
} 

//全角转半角 
function switchChar(str){ 
var str1="1234567890abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"; 
var str2="１２３４５６７８９０ａｂｃｄｅｆｇｈｉｊｋｌｍｎｏｐｑｒｓｔｕｖｗｘｙｚＡＢＣＤＥＦＧＨＩＪＫＬＭＮＯＰＱＲＳＴＵＶＷＸＹＺ"; 

var len=str.length; 
for(var i=0; i<len; i++){ 
var n = str2.indexOf(str.charAt(i)); 
if(n != -1) str = str.replace(str.charAt(i), str1.charAt(n)); 
} 
return str; 
} 

/* 
获取随机字符 
*********** 
len 长度 
vUpper 是否大写字母 
vLower 是否小写字母 
vNum 是否数字 
*/ 
function getRnd(len,vUpper,vLower,vNum){ 
var seed_array=new Array(); 
var seedary; 

seed_array[0]="" 
seed_array[1]= "a b c d e f g h i j k l m n o p q r s t u v w x y z"; 
seed_array[2]= "a b c d e f g h i j k l m n o p q r s t u v w x y z"; 
seed_array[3]= "0 1 2 3 4 5 6 7 8 9"; 

if (!vUpper&&!vLower&&!vNum){vUpper=true;vLower=true;vNum=true;} 

if (vUpper){seed_array[0]+=seed_array[1];} 
if (vLower){seed_array[0]+=" "+seed_array[2];} 
if (vNum){seed_array[0]+=" "+seed_array[3];} 

seed_array[0]= seed_array[0].split(" "); 
seedary=""; 

for (var i=0;i<len;i++){ 
seedary+=seed_array[0][Math.round(Math.random()*(seed_array[0].length-1))] 
} 
return(seedary); 
} 
/* 
获取cookies 
name cookie名称 
sub 子cookie名称 
*/ 
function getCookie(name,sub){ 
var str=""; 
var arr = document.cookie.replace(/%25/g,"%").replace(/%5F/g,"_").match(new RegExp("(^| )"+name+"=([^;]*)(;|$)")); 
if(arr !=null){ 
try{ 
str=decodeURIComponent(arr[2]); 
}catch(e){ 
str=arr[2]; 
} 
} 

if(sub){ 
if(str){ 
var nSubValueBegin = str.indexOf(sub+"="); 
}else{ 
var nSubValueBegin =-1 
} 

if(nSubValueBegin != -1){ 
var nSubValueEnd = str.indexOf("&", nSubValueBegin); 
if(nSubValueEnd == -1) 
nSubValueEnd = str.length; 
var sSubValue = str.substring(nSubValueBegin + sub.length+1, nSubValueEnd);//获得指定的子键值 
str=sSubValue; 
}else{ 
str=""; 
} 
} 
return str; 
} 

function setCookie(key,value,iExpireDays,domain){ 
var cookies=key.replace("_","%5F") + "=" + encodeURIComponent(value)+ "; "; 

if (iExpireDays){ 
var dExpire = new Date(); 
dExpire.setTime(dExpire.getTime()+parseInt(iExpireDays*24*60*60*1000)); 
cookies += "expires=" + dExpire.toGMTString()+ "; "; 
} 

if(domain){ 
cookies += "domain="+domain+"; "; 
} 
cookies += "path=/;"; 
document.cookie = cookies; 
} 

/*state*/ 
VeryIDE.script["library"]=true;