36、原生JavaScript判斷是否在安卓上的谷歌瀏覽器
function isNewChromeOnAndroid(){
if(this.isAndroidMobileDevice()){
var userAgent = navigator.userAgent.toLowerCase();
if((/chrome/i.test(userAgent))){
var parts = userAgent.split('chrome/');
var fullVersionString = parts[1].split(" ")[0];
var versionString = fullVersionString.split('.')[0];
var version = parseInt(versionString);
if(version >= 27){
return true;
}
}
}
return false;
}
37、原生JavaScript判斷是否打開視窗
function isViewportOpen() {
return !!document.getElementById('wixMobileViewport');
}
38、原生JavaScript獲取移動設備初始化大小
function getInitZoom(){
if(!this._initZoom){
var screenWidth = Math.min(screen.height, screen.width);
if(this.isAndroidMobileDevice() && !this.isNewChromeOnAndroid()){
screenWidth = screenWidth/window.devicePixelRatio;
}
this._initZoom = screenWidth /document.body.offsetWidth;
}
return this._initZoom;
}
39、原生JavaScript獲取移動設備最大化大小
function getZoom(){
var screenWidth = (Math.abs(window.orientation) === 90) ? Math.max(screen.height, screen.width) : Math.min(screen.height, screen.width);
if(this.isAndroidMobileDevice() && !this.isNewChromeOnAndroid()){
screenWidth = screenWidth/window.devicePixelRatio;
}
var FixViewPortsExperiment = rendererModel.runningExperiments.FixViewport || rendererModel.runningExperiments.fixviewport;
var FixViewPortsExperimentRunning = FixViewPortsExperiment && (FixViewPortsExperiment === "New" || FixViewPortsExperiment === "new");
if(FixViewPortsExperimentRunning){
return screenWidth / window.innerWidth;
}else{
return screenWidth / document.body.offsetWidth;
}
}
40、原生JavaScript獲取移動設備屏幕寬度
function getScreenWidth(){
var smallerSide = Math.min(screen.width, screen.height);
var fixViewPortsExperiment = rendererModel.runningExperiments.FixViewport || rendererModel.runningExperiments.fixviewport;
var fixViewPortsExperimentRunning = fixViewPortsExperiment && (fixViewPortsExperiment.toLowerCase() === "new");
if(fixViewPortsExperiment){
if(this.isAndroidMobileDevice() && !this.isNewChromeOnAndroid()){
smallerSide = smallerSide/window.devicePixelRatio;
}
}
return smallerSide;
}
41、原生 JavaScript完美判斷是否為網址
function IsURL(strUrl) {
var regular = /^\b(((https?|ftp):\/\/)?[-a-z0-9]+(\.[-a-z0-9]+)*\.(?:com|edu|gov|int|mil|net|org|biz|info|name|museum|asia|coop|aero|[a-z][a-z]|((25[0-5])|(2[0-4]\d)|(1\d\d)|([1-9]\d)|\d))\b(\/[-a-z0-9_:\@&?=+,.!\/~%\$]*)?)$/i
if (regular.test(strUrl)) {
return true;
}
else {
return false;
}
}
42、原生JavaScript根據樣式名稱檢索元素對像
function getElementsByClassName(name) {
var tags = document.getElementsByTagName('*') || document.all;
var els = [];
for (var i = 0; i < tags.length; i++) {
if (tags.className) {
var cs = tags.className.split(' ');
for (var j = 0; j < cs.length; j++) {
if (name == cs[j]) {
els.push(tags);
break
}
}
}
}
return els
}
43、原生JavaScript判斷是否以某個字符串開頭
String.prototype.startWith = function (s) {
return this.indexOf(s) == 0
}
44、原生JavaScript判斷是否以某個字符串結束
String.prototype.endWith = function (s) {
var d = this.length - s.length;
return (d >= 0 && this.lastIndexOf(s) == d)
}
45、原生JavaScript返回IE瀏覽器的版本號
function getIE(){
if (window.ActiveXObject){
var v = navigator.userAgent.match(/MSIE ([^;]+)/)[1];
return parseFloat(v.substring(0, v.indexOf(".")))
}
return false
}
46、原生JavaScript獲取頁面高度
function getPageHeight(){
var g = document, a = g.body, f = g.documentElement, d = g.compatMode == "BackCompat"
? a
: g.documentElement;
return Math.max(f.scrollHeight, a.scrollHeight, d.clientHeight);
}
47、原生JavaScript獲取頁面scrollLeft
function getPageScrollLeft(){
var a = document;
return a.documentElement.scrollLeft || a.body.scrollLeft;
}
48、原生JavaScript獲取頁面可視寬度
function getPageViewWidth(){
var d = document, a = d.compatMode == "BackCompat"
? d.body
: d.documentElement;
return a.clientWidth;
}
49、原生JavaScript獲取頁面寬度
function getPageWidth(){
var g = document, a = g.body, f = g.documentElement, d = g.compatMode == "BackCompat"
? a
: g.documentElement;
return Math.max(f.scrollWidth, a.scrollWidth, d.clientWidth);
}
50、原生JavaScript獲取頁面scrollTop
function getPageScrollTop(){
var a = document;
return a.documentElement.scrollTop || a.body.scrollTop;
}
51、原生JavaScript獲取頁面可視高度
function getPageViewHeight() {
var d = document, a = d.compatMode == "BackCompat"
? d.body
: d.documentElement;
return a.clientHeight;
}
52、原生JavaScript跨瀏覽器添加事件
function addEvt(oTarget,sEvtType,fnHandle){
if(!oTarget){return;}
if(oTarget.addEventListener){
oTarget.addEventListener(sEvtType,fnHandle,false);
}else if(oTarget.attachEvent){
oTarget.attachEvent("on" + sEvtType,fnHandle);
}else{
oTarget["on" + sEvtType] = fnHandle;
}
}
53、原生JavaScript跨瀏覽器刪除事件
function delEvt(oTarget,sEvtType,fnHandle){
if(!oTarget){return;}
if(oTarget.addEventListener){
oTarget.addEventListener(sEvtType,fnHandle,false);
}else if(oTarget.attachEvent){
oTarget.attachEvent("on" + sEvtType,fnHandle);
}else{
oTarget["on" + sEvtType] = fnHandle;
}
}
54、原生JavaScript去掉url前綴
function removeUrlPrefix(a){
a=a.replace(/：/g,":").replace(/．/g,".").replace(/／/g,"/");
while(trim(a).toLowerCase().indexOf("http://")==0){
a=trim(a.replace(/http:\/\//i,""));
}
return a;
}
55、原生JavaScript隨機數時間戳
function uniqueId(){
var a=Math.random,b=parseInt;
return Number(new Date()).toString()+b(10*a())+b(10*a())+b(10*a());
}
56、原生JavaScript全角半角轉換,iCase: 0全到半，1半到全，其他不轉化
function chgCase(sStr,iCase){
if(typeof sStr != "string" || sStr.length <= 0 || !(iCase === 0 || iCase == 1)){
return sStr;
}
var i,oRs=[],iCode;
if(iCase){/*半->全*/
for(i=0; i<sStr.length;i+=1){
iCode = sStr.charCodeAt(i);
if(iCode == 32){
iCode = 12288;
}else if(iCode < 127){
iCode += 65248;
}
oRs.push(String.fromCharCode(iCode));
}
}else{/*全->半*/
for(i=0; i<sStr.length;i+=1){
iCode = sStr.charCodeAt(i);
if(iCode == 12288){
iCode = 32;
}else if(iCode > 65280 && iCode < 65375){
iCode -= 65248;
}
oRs.push(String.fromCharCode(iCode));
}
}
return oRs.join("");
}
57、原生JavaScript確認是否鍵盤有效輸入值
function checkKey(iKey){
if(iKey == 32 || iKey == 229){return true;}/*空格和異常*/
if(iKey>47 && iKey < 58){return true;}/*數字*/
if(iKey>64 && iKey < 91){return true;}/*字母*/
if(iKey>95 && iKey < 108){return true;}/*數字鍵盤1*/
if(iKey>108 && iKey < 112){return true;}/*數字鍵盤2*/
if(iKey>185 && iKey < 193){return true;}/*符號1*/
if(iKey>218 && iKey < 223){return true;}/*符號2*/
return false;
}
58、原生JavaScript獲取網頁被捲去的位置
function getScrollXY() {
return document.body.scrollTop ? {
x: document.body.scrollLeft,
y: document.body.scrollTop
}: {
x: document.documentElement.scrollLeft,
y: document.documentElement.scrollTop
}
}
59、原生JavaScript另一種正則日期格式化函數+調用方法
Date.prototype.format = function(format){ //author: meizz
var o = {
"M+" : this.getMonth()+1, //month
"d+" : this.getDate(), //day
"h+" : this.getHours(), //hour
"m+" : this.getMinutes(), //minute
"s+" : this.getSeconds(), //second
"q+" : Math.floor((this.getMonth()+3)/3), //quarter
"S" : this.getMilliseconds() //millisecond
}
if(/(y+)/.test(format)) format=format.replace(RegExp.$1,
(this.getFullYear()+"").substr(4 - RegExp.$1.length));
for(var k in o)if(new RegExp("("+ k +")").test(format))
format = format.replace(RegExp.$1,
RegExp.$1.length==1 ? o[k] :
("00"+ o[k]).substr((""+ o[k]).length));
return format;
}
alert(new Date().format("yyyy-MM-dd hh:mm:ss"));
60、原生JavaScript時間個性化輸出功能
/*
1、< 60s, 顯示為「剛剛」
2、>= 1min && < 60 min, 顯示與當前時間差「XX分鐘前」
3、>= 60min && < 1day, 顯示與當前時間差「今天 XX:XX」
4、>= 1day && < 1year, 顯示日期「XX月XX日 XX:XX」
5、>= 1year, 顯示具體日期「XXXX年XX月XX日 XX:XX」
*/
function timeFormat(time){
var date = new Date(time)
, curDate = new Date()
, year = date.getFullYear()
, month = date.getMonth() + 1
, day = date.getDate()
, hour = date.getHours()
, minute = date.getMinutes()
, curYear = curDate.getFullYear()
, curHour = curDate.getHours()
, timeStr;
if(year < curYear){
timeStr = year +'年'+ month +'月'+ day +'日 '+ hour +':'+ minute;
}else{
var pastTime = curDate - date
, pastH = pastTime/3600000;
if(pastH > curHour){
timeStr = month +'月'+ day +'日 '+ hour +':'+ minute;
}else if(pastH >= 1){
timeStr = '今天 ' + hour +':'+ minute +'分';
}else{
var pastM = curDate.getMinutes() - minute;
if(pastM > 1){
timeStr = pastM +'分鐘前';
}else{
timeStr = '剛剛';
}
}
}
return timeStr;
}
61、原生JavaScript解決offsetX兼容性問題
// 針對火狐不支持offsetX/Y
function getOffset(e){
var target = e.target, // 當前觸發的目標對像
eventCoord,
pageCoord,
offsetCoord;
// 計算當前觸發元素到文檔的距離
pageCoord = getPageCoord(target);
// 計算光標到文檔的距離
eventCoord = {
X : window.pageXOffset + e.clientX,
Y : window.pageYOffset + e.clientY
};
// 相減獲取光標到第一個定位的父元素的坐標
offsetCoord = {
X : eventCoord.X - pageCoord.X,
Y : eventCoord.Y - pageCoord.Y
};
return offsetCoord;
}
function getPageCoord(element){
var coord = { X : 0, Y : 0 };
// 計算從當前觸發元素到根節點為止，
// 各級 offsetParent 元素的 offsetLeft 或 offsetTop 值之和
while (element){
coord.X += element.offsetLeft;
coord.Y += element.offsetTop;
element = element.offsetParent;
}
return coord;
}
62、原生JavaScript常用的正則表達式
//正整數
/^[0-9]*[1-9][0-9]*$/;
//負整數
/^-[0-9]*[1-9][0-9]*$/;
//正浮點數
/^(([0-9]+\.[0-9]*[1-9][0-9]*)|([0-9]*[1-9][0-9]*\.[0-9]+)|([0-9]*[1-9][0-9]*))$/;
//負浮點數
/^(-(([0-9]+\.[0-9]*[1-9][0-9]*)|([0-9]*[1-9][0-9]*\.[0-9]+)|([0-9]*[1-9][0-9]*)))$/;
//浮點數
/^(-?\d+)(\.\d+)?$/;
//email地址
/^[\w-]+(\.[\w-]+)*@[\w-]+(\.[\w-]+)+$/;
//url地址
/^[a-zA-z]+://(\w+(-\w+)*)(\.(\w+(-\w+)*))*(\?\S*)?$/;
//年/月/日（年-月-日、年.月.日）
/^(19|20)\d\d[- /.](0[1-9]|1[012])[- /.](0[1-9]|[12][0-9]|3[01])$/;
//匹配中文字符
/[\u4e00-\u9fa5]/;
//匹配帳號是否合法(字母開頭，允許5-10字節，允許字母數字下劃線)
/^[a-zA-Z][a-zA-Z0-9_]{4,9}$/;
//匹配空白行的正則表達式
/\n\s*\r/;
//匹配中國郵政編碼
/[1-9]\d{5}(?!\d)/;
//匹配身份證
/\d{15}|\d{18}/;
//匹配國內電話號碼
/(\d{3}-|\d{4}-)?(\d{8}|\d{7})?/;
//匹配IP地址
/((2[0-4]\d|25[0-5]|[01]?\d\d?)\.){3}(2[0-4]\d|25[0-5]|[01]?\d\d?)/;
//匹配首尾空白字符的正則表達式
/^\s*|\s*$/;
//匹配HTML標記的正則表達式
< (\S*?)[^>]*>.*?|< .*? />;
63、原生JavaScript實現返回頂部的通用方法
function backTop(btnId) {
var btn = document.getElementById(btnId);
var d = document.documentElement;
var b = document.body;
window.onscroll = set;
btn.style.display = "none";
btn.onclick = function() {
btn.style.display = "none";
window.onscroll = null;
this.timer = setInterval(function() {
d.scrollTop -= Math.ceil((d.scrollTop + b.scrollTop) * 0.1);
b.scrollTop -= Math.ceil((d.scrollTop + b.scrollTop) * 0.1);
if ((d.scrollTop + b.scrollTop) == 0) clearInterval(btn.timer, window.onscroll = set);
},
10);
};
function set() {
btn.style.display = (d.scrollTop + b.scrollTop > 100) ? 'block': "none"
}
};
backTop('goTop');
64、原生JavaScript獲得URL中GET參數值
// 用法：如果地址是 test.htm?t1=1&t2=2&t3=3, 那麼能取得：GET["t1"], GET["t2"], GET["t3"]
function get_get(){
querystr = window.location.href.split("?")
if(querystr[1]){
GETs = querystr[1].split("&")
GET =new Array()
for(i=0;i<GETs.length;i++){
tmp_arr = GETs.split("=")
key=tmp_arr[0]
GET[key] = tmp_arr[1]
}
}
return querystr[1];
}
65、原生JavaScript實現全選通用方法
function checkall(form, prefix, checkall) {
var checkall = checkall ? checkall : 'chkall';
for(var i = 0; i < form.elements.length; i++) {
var e = form.elements;
if(e.type=="checkbox"){
e.checked = form.elements[checkall].checked;
}
}
}
66、原生JavaScript實現全部取消選擇通用方法
function uncheckAll(form) {
for (var i=0;i<form.elements.length;i++){
var e = form.elements;
if (e.name != 'chkall')
e.checked=!e.checked;
}
}
67、原生JavaScript實現打開一個窗體通用方法
function openWindow(url,windowName,width,height){
var x = parseInt(screen.width / 2.0) - (width / 2.0);
var y = parseInt(screen.height / 2.0) - (height / 2.0);
var isMSIE= (navigator.appName == "Microsoft Internet Explorer");
if (isMSIE) {
var p = "resizable=1,location=no,scrollbars=no,width=";
p = p+width;
p = p+",height=";
p = p+height;
p = p+",left=";
p = p+x;
p = p+",top=";
p = p+y;
retval = window.open(url, windowName, p);
} else {
var win = window.open(url, "ZyiisPopup", "top=" + y + ",left=" + x + ",scrollbars=" + scrollbars + ",dialog=yes,modal=yes,width=" + width + ",height=" + height + ",resizable=no" );
eval("try { win.resizeTo(width, height); } catch(e) { }");
win.focus();
}
}
68、原生JavaScript判斷是否為客戶端設備
function client(o){
var b = navigator.userAgent.toLowerCase();
var t = false;
if (o == 'isOP'){
t = b.indexOf('opera') > -1;
}
if (o == 'isIE'){
t = b.indexOf('msie') > -1;
}
if (o == 'isFF'){
t = b.indexOf('firefox') > -1;
}
return t;
}
69、原生JavaScript獲取單選按鈕的值
function get_radio_value(field){
if(field&&field.length){
for(var i=0;i<field.length;i++){
if(field.checked){
return field.value;
}
}
}else {
return ;
}
}
70、原生JavaScript獲取復選框的值
function get_checkbox_value(field){
if(field&&field.length){
for(var i=0;i<field.length;i++){
if(field.checked && !field.disabled){
return field.value;
}
}
}else {
return;
}
}
from http://developer.51cto.com/art/201312/425414.htm
function isNewChromeOnAndroid(){
if(this.isAndroidMobileDevice()){
var userAgent = navigator.userAgent.toLowerCase();
if((/chrome/i.test(userAgent))){
var parts = userAgent.split('chrome/');
var fullVersionString = parts[1].split(" ")[0];
var versionString = fullVersionString.split('.')[0];
var version = parseInt(versionString);
if(version >= 27){
return true;
}
}
}
return false;
}
37、原生JavaScript判斷是否打開視窗
function isViewportOpen() {
return !!document.getElementById('wixMobileViewport');
}
38、原生JavaScript獲取移動設備初始化大小
function getInitZoom(){
if(!this._initZoom){
var screenWidth = Math.min(screen.height, screen.width);
if(this.isAndroidMobileDevice() && !this.isNewChromeOnAndroid()){
screenWidth = screenWidth/window.devicePixelRatio;
}
this._initZoom = screenWidth /document.body.offsetWidth;
}
return this._initZoom;
}
39、原生JavaScript獲取移動設備最大化大小
function getZoom(){
var screenWidth = (Math.abs(window.orientation) === 90) ? Math.max(screen.height, screen.width) : Math.min(screen.height, screen.width);
if(this.isAndroidMobileDevice() && !this.isNewChromeOnAndroid()){
screenWidth = screenWidth/window.devicePixelRatio;
}
var FixViewPortsExperiment = rendererModel.runningExperiments.FixViewport || rendererModel.runningExperiments.fixviewport;
var FixViewPortsExperimentRunning = FixViewPortsExperiment && (FixViewPortsExperiment === "New" || FixViewPortsExperiment === "new");
if(FixViewPortsExperimentRunning){
return screenWidth / window.innerWidth;
}else{
return screenWidth / document.body.offsetWidth;
}
}
40、原生JavaScript獲取移動設備屏幕寬度
function getScreenWidth(){
var smallerSide = Math.min(screen.width, screen.height);
var fixViewPortsExperiment = rendererModel.runningExperiments.FixViewport || rendererModel.runningExperiments.fixviewport;
var fixViewPortsExperimentRunning = fixViewPortsExperiment && (fixViewPortsExperiment.toLowerCase() === "new");
if(fixViewPortsExperiment){
if(this.isAndroidMobileDevice() && !this.isNewChromeOnAndroid()){
smallerSide = smallerSide/window.devicePixelRatio;
}
}
return smallerSide;
}
41、原生 JavaScript完美判斷是否為網址
function IsURL(strUrl) {
var regular = /^\b(((https?|ftp):\/\/)?[-a-z0-9]+(\.[-a-z0-9]+)*\.(?:com|edu|gov|int|mil|net|org|biz|info|name|museum|asia|coop|aero|[a-z][a-z]|((25[0-5])|(2[0-4]\d)|(1\d\d)|([1-9]\d)|\d))\b(\/[-a-z0-9_:\@&?=+,.!\/~%\$]*)?)$/i
if (regular.test(strUrl)) {
return true;
}
else {
return false;
}
}
42、原生JavaScript根據樣式名稱檢索元素對像
function getElementsByClassName(name) {
var tags = document.getElementsByTagName('*') || document.all;
var els = [];
for (var i = 0; i < tags.length; i++) {
if (tags.className) {
var cs = tags.className.split(' ');
for (var j = 0; j < cs.length; j++) {
if (name == cs[j]) {
els.push(tags);
break
}
}
}
}
return els
}
43、原生JavaScript判斷是否以某個字符串開頭
String.prototype.startWith = function (s) {
return this.indexOf(s) == 0
}
44、原生JavaScript判斷是否以某個字符串結束
String.prototype.endWith = function (s) {
var d = this.length - s.length;
return (d >= 0 && this.lastIndexOf(s) == d)
}
45、原生JavaScript返回IE瀏覽器的版本號
function getIE(){
if (window.ActiveXObject){
var v = navigator.userAgent.match(/MSIE ([^;]+)/)[1];
return parseFloat(v.substring(0, v.indexOf(".")))
}
return false
}
46、原生JavaScript獲取頁面高度
function getPageHeight(){
var g = document, a = g.body, f = g.documentElement, d = g.compatMode == "BackCompat"
? a
: g.documentElement;
return Math.max(f.scrollHeight, a.scrollHeight, d.clientHeight);
}
47、原生JavaScript獲取頁面scrollLeft
function getPageScrollLeft(){
var a = document;
return a.documentElement.scrollLeft || a.body.scrollLeft;
}
48、原生JavaScript獲取頁面可視寬度
function getPageViewWidth(){
var d = document, a = d.compatMode == "BackCompat"
? d.body
: d.documentElement;
return a.clientWidth;
}
49、原生JavaScript獲取頁面寬度
function getPageWidth(){
var g = document, a = g.body, f = g.documentElement, d = g.compatMode == "BackCompat"
? a
: g.documentElement;
return Math.max(f.scrollWidth, a.scrollWidth, d.clientWidth);
}
50、原生JavaScript獲取頁面scrollTop
function getPageScrollTop(){
var a = document;
return a.documentElement.scrollTop || a.body.scrollTop;
}
51、原生JavaScript獲取頁面可視高度
function getPageViewHeight() {
var d = document, a = d.compatMode == "BackCompat"
? d.body
: d.documentElement;
return a.clientHeight;
}
52、原生JavaScript跨瀏覽器添加事件
function addEvt(oTarget,sEvtType,fnHandle){
if(!oTarget){return;}
if(oTarget.addEventListener){
oTarget.addEventListener(sEvtType,fnHandle,false);
}else if(oTarget.attachEvent){
oTarget.attachEvent("on" + sEvtType,fnHandle);
}else{
oTarget["on" + sEvtType] = fnHandle;
}
}
53、原生JavaScript跨瀏覽器刪除事件
function delEvt(oTarget,sEvtType,fnHandle){
if(!oTarget){return;}
if(oTarget.addEventListener){
oTarget.addEventListener(sEvtType,fnHandle,false);
}else if(oTarget.attachEvent){
oTarget.attachEvent("on" + sEvtType,fnHandle);
}else{
oTarget["on" + sEvtType] = fnHandle;
}
}
54、原生JavaScript去掉url前綴
function removeUrlPrefix(a){
a=a.replace(/：/g,":").replace(/．/g,".").replace(/／/g,"/");
while(trim(a).toLowerCase().indexOf("http://")==0){
a=trim(a.replace(/http:\/\//i,""));
}
return a;
}
55、原生JavaScript隨機數時間戳
function uniqueId(){
var a=Math.random,b=parseInt;
return Number(new Date()).toString()+b(10*a())+b(10*a())+b(10*a());
}
56、原生JavaScript全角半角轉換,iCase: 0全到半，1半到全，其他不轉化
function chgCase(sStr,iCase){
if(typeof sStr != "string" || sStr.length <= 0 || !(iCase === 0 || iCase == 1)){
return sStr;
}
var i,oRs=[],iCode;
if(iCase){/*半->全*/
for(i=0; i<sStr.length;i+=1){
iCode = sStr.charCodeAt(i);
if(iCode == 32){
iCode = 12288;
}else if(iCode < 127){
iCode += 65248;
}
oRs.push(String.fromCharCode(iCode));
}
}else{/*全->半*/
for(i=0; i<sStr.length;i+=1){
iCode = sStr.charCodeAt(i);
if(iCode == 12288){
iCode = 32;
}else if(iCode > 65280 && iCode < 65375){
iCode -= 65248;
}
oRs.push(String.fromCharCode(iCode));
}
}
return oRs.join("");
}
57、原生JavaScript確認是否鍵盤有效輸入值
function checkKey(iKey){
if(iKey == 32 || iKey == 229){return true;}/*空格和異常*/
if(iKey>47 && iKey < 58){return true;}/*數字*/
if(iKey>64 && iKey < 91){return true;}/*字母*/
if(iKey>95 && iKey < 108){return true;}/*數字鍵盤1*/
if(iKey>108 && iKey < 112){return true;}/*數字鍵盤2*/
if(iKey>185 && iKey < 193){return true;}/*符號1*/
if(iKey>218 && iKey < 223){return true;}/*符號2*/
return false;
}
58、原生JavaScript獲取網頁被捲去的位置
function getScrollXY() {
return document.body.scrollTop ? {
x: document.body.scrollLeft,
y: document.body.scrollTop
}: {
x: document.documentElement.scrollLeft,
y: document.documentElement.scrollTop
}
}
59、原生JavaScript另一種正則日期格式化函數+調用方法
Date.prototype.format = function(format){ //author: meizz
var o = {
"M+" : this.getMonth()+1, //month
"d+" : this.getDate(), //day
"h+" : this.getHours(), //hour
"m+" : this.getMinutes(), //minute
"s+" : this.getSeconds(), //second
"q+" : Math.floor((this.getMonth()+3)/3), //quarter
"S" : this.getMilliseconds() //millisecond
}
if(/(y+)/.test(format)) format=format.replace(RegExp.$1,
(this.getFullYear()+"").substr(4 - RegExp.$1.length));
for(var k in o)if(new RegExp("("+ k +")").test(format))
format = format.replace(RegExp.$1,
RegExp.$1.length==1 ? o[k] :
("00"+ o[k]).substr((""+ o[k]).length));
return format;
}
alert(new Date().format("yyyy-MM-dd hh:mm:ss"));
60、原生JavaScript時間個性化輸出功能
/*
1、< 60s, 顯示為「剛剛」
2、>= 1min && < 60 min, 顯示與當前時間差「XX分鐘前」
3、>= 60min && < 1day, 顯示與當前時間差「今天 XX:XX」
4、>= 1day && < 1year, 顯示日期「XX月XX日 XX:XX」
5、>= 1year, 顯示具體日期「XXXX年XX月XX日 XX:XX」
*/
function timeFormat(time){
var date = new Date(time)
, curDate = new Date()
, year = date.getFullYear()
, month = date.getMonth() + 1
, day = date.getDate()
, hour = date.getHours()
, minute = date.getMinutes()
, curYear = curDate.getFullYear()
, curHour = curDate.getHours()
, timeStr;
if(year < curYear){
timeStr = year +'年'+ month +'月'+ day +'日 '+ hour +':'+ minute;
}else{
var pastTime = curDate - date
, pastH = pastTime/3600000;
if(pastH > curHour){
timeStr = month +'月'+ day +'日 '+ hour +':'+ minute;
}else if(pastH >= 1){
timeStr = '今天 ' + hour +':'+ minute +'分';
}else{
var pastM = curDate.getMinutes() - minute;
if(pastM > 1){
timeStr = pastM +'分鐘前';
}else{
timeStr = '剛剛';
}
}
}
return timeStr;
}
61、原生JavaScript解決offsetX兼容性問題
// 針對火狐不支持offsetX/Y
function getOffset(e){
var target = e.target, // 當前觸發的目標對像
eventCoord,
pageCoord,
offsetCoord;
// 計算當前觸發元素到文檔的距離
pageCoord = getPageCoord(target);
// 計算光標到文檔的距離
eventCoord = {
X : window.pageXOffset + e.clientX,
Y : window.pageYOffset + e.clientY
};
// 相減獲取光標到第一個定位的父元素的坐標
offsetCoord = {
X : eventCoord.X - pageCoord.X,
Y : eventCoord.Y - pageCoord.Y
};
return offsetCoord;
}
function getPageCoord(element){
var coord = { X : 0, Y : 0 };
// 計算從當前觸發元素到根節點為止，
// 各級 offsetParent 元素的 offsetLeft 或 offsetTop 值之和
while (element){
coord.X += element.offsetLeft;
coord.Y += element.offsetTop;
element = element.offsetParent;
}
return coord;
}
62、原生JavaScript常用的正則表達式
//正整數
/^[0-9]*[1-9][0-9]*$/;
//負整數
/^-[0-9]*[1-9][0-9]*$/;
//正浮點數
/^(([0-9]+\.[0-9]*[1-9][0-9]*)|([0-9]*[1-9][0-9]*\.[0-9]+)|([0-9]*[1-9][0-9]*))$/;
//負浮點數
/^(-(([0-9]+\.[0-9]*[1-9][0-9]*)|([0-9]*[1-9][0-9]*\.[0-9]+)|([0-9]*[1-9][0-9]*)))$/;
//浮點數
/^(-?\d+)(\.\d+)?$/;
//email地址
/^[\w-]+(\.[\w-]+)*@[\w-]+(\.[\w-]+)+$/;
//url地址
/^[a-zA-z]+://(\w+(-\w+)*)(\.(\w+(-\w+)*))*(\?\S*)?$/;
//年/月/日（年-月-日、年.月.日）
/^(19|20)\d\d[- /.](0[1-9]|1[012])[- /.](0[1-9]|[12][0-9]|3[01])$/;
//匹配中文字符
/[\u4e00-\u9fa5]/;
//匹配帳號是否合法(字母開頭，允許5-10字節，允許字母數字下劃線)
/^[a-zA-Z][a-zA-Z0-9_]{4,9}$/;
//匹配空白行的正則表達式
/\n\s*\r/;
//匹配中國郵政編碼
/[1-9]\d{5}(?!\d)/;
//匹配身份證
/\d{15}|\d{18}/;
//匹配國內電話號碼
/(\d{3}-|\d{4}-)?(\d{8}|\d{7})?/;
//匹配IP地址
/((2[0-4]\d|25[0-5]|[01]?\d\d?)\.){3}(2[0-4]\d|25[0-5]|[01]?\d\d?)/;
//匹配首尾空白字符的正則表達式
/^\s*|\s*$/;
//匹配HTML標記的正則表達式
< (\S*?)[^>]*>.*?|< .*? />;
63、原生JavaScript實現返回頂部的通用方法
function backTop(btnId) {
var btn = document.getElementById(btnId);
var d = document.documentElement;
var b = document.body;
window.onscroll = set;
btn.style.display = "none";
btn.onclick = function() {
btn.style.display = "none";
window.onscroll = null;
this.timer = setInterval(function() {
d.scrollTop -= Math.ceil((d.scrollTop + b.scrollTop) * 0.1);
b.scrollTop -= Math.ceil((d.scrollTop + b.scrollTop) * 0.1);
if ((d.scrollTop + b.scrollTop) == 0) clearInterval(btn.timer, window.onscroll = set);
},
10);
};
function set() {
btn.style.display = (d.scrollTop + b.scrollTop > 100) ? 'block': "none"
}
};
backTop('goTop');
64、原生JavaScript獲得URL中GET參數值
// 用法：如果地址是 test.htm?t1=1&t2=2&t3=3, 那麼能取得：GET["t1"], GET["t2"], GET["t3"]
function get_get(){
querystr = window.location.href.split("?")
if(querystr[1]){
GETs = querystr[1].split("&")
GET =new Array()
for(i=0;i<GETs.length;i++){
tmp_arr = GETs.split("=")
key=tmp_arr[0]
GET[key] = tmp_arr[1]
}
}
return querystr[1];
}
65、原生JavaScript實現全選通用方法
function checkall(form, prefix, checkall) {
var checkall = checkall ? checkall : 'chkall';
for(var i = 0; i < form.elements.length; i++) {
var e = form.elements;
if(e.type=="checkbox"){
e.checked = form.elements[checkall].checked;
}
}
}
66、原生JavaScript實現全部取消選擇通用方法
function uncheckAll(form) {
for (var i=0;i<form.elements.length;i++){
var e = form.elements;
if (e.name != 'chkall')
e.checked=!e.checked;
}
}
67、原生JavaScript實現打開一個窗體通用方法
function openWindow(url,windowName,width,height){
var x = parseInt(screen.width / 2.0) - (width / 2.0);
var y = parseInt(screen.height / 2.0) - (height / 2.0);
var isMSIE= (navigator.appName == "Microsoft Internet Explorer");
if (isMSIE) {
var p = "resizable=1,location=no,scrollbars=no,width=";
p = p+width;
p = p+",height=";
p = p+height;
p = p+",left=";
p = p+x;
p = p+",top=";
p = p+y;
retval = window.open(url, windowName, p);
} else {
var win = window.open(url, "ZyiisPopup", "top=" + y + ",left=" + x + ",scrollbars=" + scrollbars + ",dialog=yes,modal=yes,width=" + width + ",height=" + height + ",resizable=no" );
eval("try { win.resizeTo(width, height); } catch(e) { }");
win.focus();
}
}
68、原生JavaScript判斷是否為客戶端設備
function client(o){
var b = navigator.userAgent.toLowerCase();
var t = false;
if (o == 'isOP'){
t = b.indexOf('opera') > -1;
}
if (o == 'isIE'){
t = b.indexOf('msie') > -1;
}
if (o == 'isFF'){
t = b.indexOf('firefox') > -1;
}
return t;
}
69、原生JavaScript獲取單選按鈕的值
function get_radio_value(field){
if(field&&field.length){
for(var i=0;i<field.length;i++){
if(field.checked){
return field.value;
}
}
}else {
return ;
}
}
70、原生JavaScript獲取復選框的值
function get_checkbox_value(field){
if(field&&field.length){
for(var i=0;i<field.length;i++){
if(field.checked && !field.disabled){
return field.value;
}
}
}else {
return;
}
}
from http://developer.51cto.com/art/201312/425414.htm
