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;