js常用总结

function mspGb2312(key)
{
var r = "";
for(var i=0;i<key.length;i++)
{
var t = key.charCodeAt(i);
if(t>=0x4e00 || t==0x300A || t==0x300B)
{
try
{
execScript("ascCode=hex(asc(\""+key.charAt(i)+"\"))", "vbscript"); r += ascCode.replace(/(.{2})/g, "%$1"); }
catch(e)
{}
}
else{r += escape(key.charAt(i));}
}
return r;
}

//判断字符串是否为数字
var isIntNumber = function(String){
var Letters = "1234567890";
var i;
var c;
for( i = 0; i < String.length; i ++ )
{
c = String.charAt( i );
if (Letters.indexOf( c ) < 0)
return false;
}
return true;
};

function trim(str){
if (typeof(str) != "undefined")
return str.replace(/(^\s*)|(\s*$)/g, "");
}

// 判断字符串是否符合邮件地址格式
var isEmail = function(strEmail)
{
if (strEmail.search(/^\w+((-\w+)|(\.\w+))*\@[A-Za-z0-9]+((\.|-)[A-Za-z0-9]+)*\.[A-Za-z0-9]+$/) != -1)
return true;
else
return false;
};

//判断是否是域名
var isDomain = function(strDomain){
return(/^[-0-9a-zA-Z]+(\.[-0-9a-zA-Z]+)+(\/([-0-9a-zA-Z]+\.*[0-9a-zA-Z]+)*)*$/.test(strDomain))
}

var isMobile = function(mobile) {
return (/^1[3|4|5|8|7][0-9]\d{8}$/.test(mobile));
};
//判断是否是固定电话
var isTel = function(tel) {
return (/^([0-9]{3,4}-)?[0-9]{7,8}$/.test(tel));
};
// 输入的回车换行和空格字符转换成html格式标签
function  transformHtml(str){
// 将字符串以正确方式显示（包括回车，换行，空格）
while(str.indexOf("\n")!=-1){
str = str.substring(0,str.indexOf("\n"))+"<br>"+str.substring(str.indexOf("\n")+1);
}
while(str.indexOf(" ")!=-1){
str = str.substring(0,str.indexOf(" "))+" "+str.substring(str.indexOf(" ")+1);
}
return str;
}
/*
* iframe高度自适应
*/
function iFrameHeight(iframeid) {
var ifm = document.getElementById(iframeid);

if(ifm.src!="#"){
var subWeb = document.frames ? document.frames[iframeid].document : ifm.contentDocument;
if(ifm != null && subWeb != null) {
ifm.height = subWeb.body.scrollHeight;
}
}
}

//js 数字 千位分组
function number_format(str) {
str = String(str);
var str1="";
if(str.indexOf(".")>-1){
str1=str.replace(/(\d*)(.\d*)/,"$2");
str1=str1.replace(/(\d{1,3})/g,"$1,");
str1 = str1.replace(/,$/, '');
str =str.replace(/(\d*)(.\d*)/,"$1");
}
str = str.replace(/(?=(?:\d{3})+(?!\d))/g, ',');
str = str.replace(/^,/, '');
str+=str1;
return str;

}

/**
* 历史回退
*/
function historyBack(str,hrefStr){
var href=document.referrer;
if(href.indexOf(str)>-1){
window.location=href;
}else{
window.location=hrefStr;
}
}

/**
* 继续浏览广告
* imgDivId:包含切换图片的div的id
* imgIndex:广告图片的index,-1代表当前图片的下一张，
* num:图片个数
* direc:0->渐变，1->左右，2->上下
* speed:切换速去
*/
function continueSwitchPic(imgDivId,imgIndex,direc,speed){
var num=$("#"+imgDivId+" .switchbtns .abtns").length;
//curImgIndex:当前图片的index
var curImgIndex=$("#"+imgDivId+" .switchbtns .abtns").index($("#"+imgDivId+" .switchbtns .curbtn"));
if(imgIndex==curImgIndex){
return 0;
}
if(!speed&&speed!=0){
speed=1000;
}
if(imgIndex<0){
imgIndex=(curImgIndex==(num-1))?0:(curImgIndex+1);
}
if(!direc){
//切换按钮选中式样
$("#"+imgDivId+" .switchbtns .curbtn").removeClass("curbtn");
$("#"+imgDivId+" .switchbtns .abtns:eq("+imgIndex+")").addClass("curbtn");
var curObj=$("#"+imgDivId+" .imgsdiv .curimg"),nextObj=$("#"+imgDivId+" .imgsdiv .showimg:eq("+imgIndex+")");
if(speed!=0){
nextObj.css({opacity:"0",filter:"alpha(opacity=0)"});
curObj.stop().animate({opacity:"0",filter:"alpha(opacity=0)"},speed);
nextObj.stop().animate({opacity:"1",filter:"alpha(opacity=100)"},speed);
}
curObj.removeClass("curimg");
nextObj.addClass("curimg");
}
}

/**
* tab切换
*/
function switchTab(tabsContentId,callback){
var thisObj=$(this),
index=thisObj.index(),
tabsContentObj=$("#"+tabsContentId);
thisObj.siblings().removeClass("active");
thisObj.addClass("active");
tabsContentObj.children(".tab").css("display","none");
tabsContentObj.children(".tab").eq(index).css("display","block");
if(callback){
callback(thisObj,tabsContentId);
}
}

/**
* 判断包含多少个字节
*/
function getBytesCount(str)
{
if (str == null)
{
return 0;
}else{
var enterLen = 0;
if(navigator.userAgent.indexOf("WebKit")>0){
enterLen = str.length-str.replace(/\n/g, "").length;
}
return (str.length + str.replace(/[\u0000-\u00ff]/g, "").length + enterLen);
// return  str.length + str.replace(/[^\u0080-\u07FF]/g, "").length + str.replace(/[^\u0800-\uFFFF]/g, "").length*2 + enterLen;
}
}
/**
* 截取指定字节数的字符串
*/
function getStrBytesCount(str,account)
{
var bytesCount = 0,thisByteCount=0;
if (str != null)
{
for (var i = 0; i < str.length; i++){
var c = str.charAt(i);
//0000 - 007F 0xxxxxxx
// 0080 - 07FF 110xxxxx 10xxxxxx
// 0800 - FFFF 1110xxxx 10xxxxxx 10xxxxxx
// if(/^[\u0000-\u007F]$/.test(c)){
//  thisByteCount= 1;
// }else if(/^[\u0080-\u07FF]$/.test(c)){
//  thisByteCount= 2;
// }else if(/^[\u0800-\uFFFF]$/.test(c)){
//  thisByteCount= 3;
// }
if (/^[\u0000-\u00ff]$/.test(c)){
if(navigator.userAgent.indexOf("WebKit")>0 && c=='\n'){
thisByteCount= 2;
}else{
thisByteCount= 1;
}
}else{
thisByteCount= 2;
}
if(thisByteCount+bytesCount > account){
bytesCount=i;
break;
}else{
bytesCount += thisByteCount;
}
}
return str.substr(0, bytesCount);
}
return "";
}

/**
* 点击赞的动画
*/
function zanAnimate(x,y,time,color,text){
var obj=$("#like_1");
if(!obj.length){
$("html body").append("<a class='noselected' style='position:absolute;' id='like_1'>+1</a>");
obj=$("#like_1");
}
if(!color||color==""){
color="#a4d754";
}
if(!text||text==""){
text="+1";
}
obj.text(text);
obj.css({"top":y+"px","left":x+"px","display":"block","opacity":"1","filter":"alpha(opacity=100)","font-size":"20px","color":color});
obj.stop().animate({"opacity":"0.8","filter":"alpha(opacity=80)","font-size":"30px","top":(y-25)+"px","left":(x-10)+"px"},time,function(){
obj.css("display","none");
});
}

var textWidth = function(text){
var htmlcode = $('<p id="auto_width_p">'+ (transformHtml(text))+"1" +'</p>').css({display:"block"});
$('body').append(htmlcode);
var width = htmlcode.width();
var height = htmlcode.height();
htmlcode.remove();
return [width,height];
};
/**
* url：跳转地址
* loginFlag:是否登录
* blankFlag:是否另打开一个页面
*/
function openPage(url, loginFlag, blankFlag){
if(loginFlag == "1" || loginFlag == 1){
judgeLogin();
if(!userLogin){
loginLogoutCallBack['loginByOtherCB']=function(){
window.open(url,blankFlag);
}
return 0;
}else{
window.open(url,blankFlag);
}
}else{
window.open(url,blankFlag);
}

}

/*
* 前端获取文件大小
*/
function getFileSize(obj) {
var objValue = obj.value;
if (objValue == "") return;
var fileLenth = -1;
try {
//对于IE判断要上传的文件的大小
var fso = new ActiveXObject("Scripting.FileSystemObject");
fileLenth = parseInt(fso.getFile(objValue).size);
} catch (e) {
try {
//对于非IE获得要上传文件的大小
fileLenth = parseInt(obj.files[0].size);
} catch (e) {
fileLenth = -1;
}
}
return fileLenth;
}

/**
* 获得地址栏中指定参数名称的参数值
*/
function getQueryString(name, search){
var reg = new RegExp("(^|&)"+ name +"=([^&]*)(&|$)");
search = search || window.location.search;
var r = search.substr(1).match(reg);
if(r!=null)return  unescape(r[2]); return null;
}

/**
* 设置地址栏中指定参数名称的参数值
*/
function setQueryString(key, value, url){
url = url || window.location.href;
var reg = new RegExp(key+"=\\w*","g");
var keyValue = key+'='+value;
if(url.indexOf("?")>-1){
if(url.indexOf(key)>-1){
url = url.replace(reg,keyValue);
}else{
url += "&"+keyValue;
}
}else{
url += "?"+keyValue;
}
return url;
}

/**
* 展示或收缩指定元素
*/
function showHideTip(containId, callback){
var thisObj = $(this);
var containObj = $("#"+containId);
$(".show-hide-help:not(#"+containId+")").hide("normal");
containObj.toggle("normal");
if(callback){
callback(thisObj, containObj);
}
}

Date.prototype.Format = function (fmt) { //author: meizz
var o = {
"M+": this.getMonth() + 1, //月份
"d+": this.getDate(), //日
"h+": this.getHours(), //小时
"m+": this.getMinutes(), //分
"s+": this.getSeconds(), //秒
"q+": Math.floor((this.getMonth() + 3) / 3), //季度
"S": this.getMilliseconds() //毫秒
};
o['M+'] = o['M+']>9 ? o['M+'] : ('0'+o['M+']);
o['d+'] = o['d+']>9 ? o['d+'] : ('0'+o['d+']);
o['h+'] = o['h+']>9 ? o['h+'] : ('0'+o['h+']);
o['m+'] = o['m+']>9 ? o['m+'] : ('0'+o['m+']);
o['s+'] = o['s+']>9 ? o['s+'] : ('0'+o['s+']);

if (/(y+)/.test(fmt)) fmt = fmt.replace(RegExp.$1, (this.getFullYear() + "").substr(4 - RegExp.$1.length));
for (var k in o)
if (new RegExp("(" + k + ")").test(fmt)) fmt = fmt.replace(RegExp.$1, (RegExp.$1.length == 1) ? (o[k]) : (("00" + o[k]).substr(("" + o[k]).length)));
return fmt;
}

//将json转换成对象
function jsondecode(data){
return (new Function("return "+data ))();
}
//JS判断访问设备(userAgent)加载不同页面。代码如下：
function detectOS() {
var sUserAgent = navigator.userAgent;

var isWin = (navigator.platform === "Win32") || (navigator.platform === "Windows");
var isMac = (navigator.platform === "Mac68K") || (navigator.platform === "MacPPC") || (navigator.platform === "Macintosh") || (navigator.platform === "MacIntel");
var bIsIpad = sUserAgent.match(/ipad/i) === "ipad";
var bIsIphoneOs = sUserAgent.match(/iphone os/i) === "iphone os";
var isUnix = (navigator.platform === "X11") && !isWin && !isMac;
var isLinux = (String(navigator.platform).indexOf("Linux") > -1);
var bIsAndroid = sUserAgent.toLowerCase().match(/android/i) === "android";
var bIsCE = sUserAgent.match(/windows ce/i) === "windows ce";
var bIsWM = sUserAgent.match(/windows mobile/i) === "windows mobile";
if (isMac)
return "Mac";
if (isUnix)
return "Unix";
if (isLinux) {
if (bIsAndroid)
return "Android";
else
return "Linux";
}
if(bIsCE || bIsWM){
return 'wm';
}

if (isWin) {
var isWin2K = sUserAgent.indexOf("Windows NT 5.0") > -1 || sUserAgent.indexOf("Windows 2000") > -1;
if (isWin2K)
return "Win2000";
var isWinXP = sUserAgent.indexOf("Windows NT 5.1") > -1 ||
sUserAgent.indexOf("Windows XP") > -1;
if (isWinXP)
return "WinXP";
var isWin2003 = sUserAgent.indexOf("Windows NT 5.2") > -1 || sUserAgent.indexOf("Windows 2003") > -1;
if (isWin2003)
return "Win2003";
var isWinVista = sUserAgent.indexOf("Windows NT 6.0") > -1 || sUserAgent.indexOf("Windows Vista") > -1;
if (isWinVista)
return "WinVista";
var isWin7 = sUserAgent.indexOf("Windows NT 6.1") > -1 || sUserAgent.indexOf("Windows 7") > -1;
if (isWin7)
return "Win7";
var isWin8 = sUserAgent.indexOf("Windows NT 6.2") > -1 || sUserAgent.indexOf("Windows 8") > -1;
if (isWin8)
return "Win8";
}
return "other";
}

/**
* [formDataFun 将form数组数据转换成对象数据]
* @param  {[type]} formValue [数组数据]
* @return {[type]}           [description]
*/
function formDataFun(formValue){
var formData = {};
for(var i=0,len=formValue.length; i<len; i++){
if(formValue[i].value){
formData[formValue[i].name] = formValue[i].value;
}
}
return formData;
}

//倒计时对象
//用法 var cd = new countDown(); cd.start(60,function(s){//s为剩下的秒数...}, function(){})
var countDown = function(){
if(!(this instanceof countDown)){
return  new countDown();
}
this.startD;
this.interval;
this.total;
this.isStop = false;
};
//开始倒计时second：秒数，fresh：刷新显示的倒计时时间
countDown.prototype.start = function(second, fresh, callback){
var self = this;
fresh && fresh(second);
//  setTimeout(function(){
if(self.isStop){
return;
}
self.total = second*1000;
self.startD = new Date();
self.interval = setInterval(function() {
var nd = new Date();
var ds = nd - self.startD - 100;
if (ds > self.total) {
clearInterval(self.interval);
callback && callback();
} else {
fresh && fresh(Math.round((self.total - ds) / 1000));
}
}, 100);
//  }, 1000);
};
//结束倒计时
countDown.prototype.stop = function(callback){
var self = this;
self.isStop = true;
callback && callback();
clearInterval(self.interval);
};

$(function(){

/**
* outerHTML
*/
if(!document.body.outerHTML && window.HTMLElement) {
HTMLElement.prototype.__defineGetter__("outerHTML",function(){ //获取

var attr;

var attrs=this.attributes;

var str="<"+this.tagName.toLowerCase();

for(var i=0;i<attrs.length;i++){

attr=attrs[i];

if(attr.specified)

str+=" "+attr.name+'="'+attr.value+'"';

}

return str+">"+this.innerHTML+"</"+this.tagName.toLowerCase()+">";

});

HTMLElement.prototype.__defineSetter__("outerHTML",function(s) //设置

{

var r = this.ownerDocument.createRange();

r.setStartBefore(this);

var df = r.createContextualFragment(s);

this.parentNode.replaceChild(df, this);

return s;

});

}

$(".logo").click(function(){
//  location.href="index.php";
});
$(".auto_width").on("keyup",function(){
var size = textWidth($(this).val());
var thisObj = $(this);
var maxHeight = parseInt(thisObj.css("max-height"));
var maxWidth = parseInt(thisObj.css("max-width"));
if(this.tagName.toUpperCase()=="TEXTAREA"){
size[0] = size[0]+20;
}
if(maxHeight && maxHeight<size[1]){
thisObj.css({"overflow-y":"auto"});
}
if(maxWidth && maxWidth<size[0]){
thisObj.css({"overflow-x":"auto"});
}
$(this).width(size[0]);
$(this).height(size[1]);
})
$(".auto_width").each(function(){
var size = textWidth($(this).val());
var thisObj = $(this);
if(this.tagName.toUpperCase()=="TEXTAREA"){
size[0] = size[0]+20;
}
$(this).width(size[0]);
$(this).height(size[1]);
});

//input readonly
$("body").on("keydown", ":text[readonly]", function(event){
if(document.all){
window.event.returnValue = false;
window.event.cancelBubble = true;
}else{
event.preventDefault();
event.stopPropagation();
}
return false;
});

//补丁：xp ie8 .navigation-tabs2 li
if("WinXP" == detectOS() && window.navigator.userAgent.indexOf("MSIE") >= 0 ){
$(".navigation-tabs2 li").addClass("xp-ie8-navli");
}

});