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JavaScript常用的代码片段

  • 转义特殊字符为html实体
HtmlEncode: function(str){
return str.replace(/&/g, '&').replace(/\"/g, '"').replace(/</g, '<').replace(/>/g, '>').replace(/'/g, ''');
},
  • 验证是否为有效的手机电话号码
IsMobile: function(str){
var rp = /^1[3|4|5|7|8][0-9]\d{4,8}$/;
return rp.test(str);
},
  • 验证是否为有效的座机电话号码
IsTel: function(str){
var rp = /^([0-9]{3,4}-)?[0-9]{7,8}$/;
return rp.test(str);
},
  • 判断是那种类型的浏览器
WhichBrowser: function(){
var userAgent = navigator.userAgent;

var isOpera = userAgent.indexOf("Opera") > -1;
var isIE = userAgent.indexOf("compatible") > -1 && userAgent.indexOf("MSIE") > -1 && !isOpera;
var isFF = userAgent.indexOf("Firefox") > -1;
var isCH = userAgent.indexOf("Chrome") > -1;
var isSafari = userAgent.indexOf("Safari") > -1;

if (isIE){
var IE5 = IE55 = IE6 = IE7 = IE8 = false;
var reIE = new RegExp("MSIE (\\d+\\.\\d+);");
reIE.test(userAgent);
var fIEVersion = parseFloat(RegExp["$1"]);
IE55 = fIEVersion == 5.5;
IE6 = fIEVersion == 6.0;
IE7 = fIEVersion == 7.0;
IE8 = fIEVersion == 8.0;
if (IE55) {
return "IE55";
}
if (IE6) {
return "IE6";
}
if (IE7) {
return "IE7";
}
if (IE8) {
return "IE8";
}
}

if (isFF) {
return "Firefox";
}
if (isCH) {
return "Chrome";
}
if (isOpera) {
return "Opera";
}
if (isSafari) {
return "Safari";
}
},
  • 获取客户端浏览器cookie
GetCookie: function(c_name){
if(document.cookie.length>0){
c_start = document.cookie.indexOf(c_name + '=');
if(c_start != -1){
c_start = c_start + c_name.length + 1;
c_end = document.cookie.indexOf(';',c_start);
if (c_end==-1) c_end = document.cookie.length;
return unescape(document.cookie.substring(c_start,c_end));
}
}
return '';
},
  • 设置客户端浏览器cookie
SetCookie: function(c_name, value, expiredays){
var exdate = new Date();
exdate.setDate(exdate.getDate() + expiredays);
document.cookie = c_name + "=" + escape(value) + ((expiredays==null) ? "" : ";expires="+exdate.toGMTString());
},
};
  • 字符串长度截取
function cutstr(str, len) {
var temp,
icount = 0,
patrn = /[^\x00-\xff]/
strre = "";
for (var i = 0; i < str.length; i++) {
if (icount < len - 1) {
temp = str.substr(i, 1);
if (patrn.exec(temp) == null) {
icount = icount + 1
} else {
icount = icount + 2
}
strre += temp
} else {
break;
}
}
return strre + "..."
}
  • 替换全部
String.prototype.replaceAll = function(s1, s2) {
return this.replace(new RegExp(s1, "gm"), s2)
}
  • 清除空格
String.prototype.trim = function() {
var reExtraSpace = /^\s*(.*?)\s+$/;
return this.replace(reExtraSpace, "$1")
}
  • 清除左空格/右空格
function ltrim(s){ return s.replace( /^(\s*| *)/, ""); } 
function rtrim(s){ return s.replace( /(\s*| *)$/, ""); }
  • 判断是否以某个字符串开头
String.prototype.startWith = function (s) {
return this.indexOf(s) == 0
}
  • 判断是否以某个字符串结束
String.prototype.endWith = function (s) {
var d = this.length - s.length;
return (d >= 0 && this.lastIndexOf(s) == d)
}
  • 转义html标签
function HtmlEncode(text) {
return text.replace(/&/g, '&').replace(/\"/g, '"').replace(/</g, '<').replace(/>/g, '>')
}
  • 时间日期格式转换
Date.prototype.Format = function(formatStr) {
var str = formatStr;
var Week = ['日', '一', '二', '三', '四', '五', '六'];
str = str.replace(/yyyy|YYYY/, this.getFullYear());
str = str.replace(/yy|YY/, (this.getYear() % 100) > 9 ? (this.getYear() % 100).toString() : '0' + (this.getYear() % 100));
str = str.replace(/MM/, (this.getMonth() + 1) > 9 ? (this.getMonth() + 1).toString() : '0' + (this.getMonth() + 1));
str = str.replace(/M/g, (this.getMonth() + 1));
str = str.replace(/w|W/g, Week[this.getDay()]);
str = str.replace(/dd|DD/, this.getDate() > 9 ? this.getDate().toString() : '0' + this.getDate());
str = str.replace(/d|D/g, this.getDate());
str = str.replace(/hh|HH/, this.getHours() > 9 ? this.getHours().toString() : '0' + this.getHours());
str = str.replace(/h|H/g, this.getHours());
str = str.replace(/mm/, this.getMinutes() > 9 ? this.getMinutes().toString() : '0' + this.getMinutes());
str = str.replace(/m/g, this.getMinutes());
str = str.replace(/ss|SS/, this.getSeconds() > 9 ? this.getSeconds().toString() : '0' + this.getSeconds());
str = str.replace(/s|S/g, this.getSeconds());
return str
}
  • 判断是否为数字类型
function isDigit(value) {
var patrn = /^[0-9]*$/;
if (patrn.exec(value) == null || value == "") {
return false
} else {
return true
}
}
  • 设置cookie值
function setCookie(name, value, Hours) {
var d = new Date();
var offset = 8;
var utc = d.getTime() + (d.getTimezoneOffset() * 60000);
var nd = utc + (3600000 * offset);
var exp = new Date(nd);
exp.setTime(exp.getTime() + Hours * 60 * 60 * 1000);
document.cookie = name + "=" + escape(value) + ";path=/;expires=" + exp.toGMTString() + ";domain=360doc.com;"
}
  • 获取cookie值
function getCookie(name) {
var arr = document.cookie.match(new RegExp("(^| )" + name + "=([^;]*)(;|$)"));
if (arr != null) return unescape(arr[2]);
return null
}
  • 加入收藏夹
function AddFavorite(sURL, sTitle) {
try {
window.external.addFavorite(sURL, sTitle)
} catch(e) {
try {
window.sidebar.addPanel(sTitle, sURL, "")
} catch(e) {
alert("加入收藏失败,请使用Ctrl+D进行添加")
}
}
}
  • 设为首页
function setHomepage() {
if (document.all) {
document.body.style.behavior = 'url(#default#homepage)';
document.body.setHomePage('http://w3cboy.com')
} else if (window.sidebar) {
if (window.netscape) {
try {
netscape.security.PrivilegeManager.enablePrivilege("UniversalXPConnect")
} catch(e) {
alert("该操作被浏览器拒绝,如果想启用该功能,请在地址栏内输入 about:config,然后将项 signed.applets.codebase_principal_support 值该为true")
}
}
var prefs = Components.classes['@mozilla.org/preferences-service;1'].getService(Components.interfaces.nsIPrefBranch);
prefs.setCharPref('browser.startup.homepage', 'http://w3cboy.com')
}
}
  • 加载样式文件
function LoadStyle(url) {
try {
document.createStyleSheet(url)
} catch(e) {
var cssLink = document.createElement('link');
cssLink.rel = 'stylesheet';
cssLink.type = 'text/css';
cssLink.href = url;
var head = document.getElementsByTagName('head')[0];
head.appendChild(cssLink)
}
}
  • 返回脚本内容
function evalscript(s) {
if(s.indexOf('<script') == -1) return s;
var p = /<script[^\>]*?>([^\x00]*?)<\/script>/ig;
var arr = [];
while(arr = p.exec(s)) {
var p1 = /<script[^\>]*?src=\"([^\>]*?)\"[^\>]*?(reload=\"1\")?(?:charset=\"([\w\-]+?)\")?><\/script>/i;
var arr1 = [];
arr1 = p1.exec(arr[0]);
if(arr1) {
appendscript(arr1[1], '', arr1[2], arr1[3]);
} else {
p1 = /<script(.*?)>([^\x00]+?)<\/script>/i;
arr1 = p1.exec(arr[0]);
appendscript('', arr1[2], arr1[1].indexOf('reload=') != -1);
}
}
return s;
}
  • 清除脚本内容
function stripscript(s) {
return s.replace(/<script.*?>.*?<\/script>/ig, '');
}
  • 动态加载脚本文件
function appendscript(src, text, reload, charset) {
var id = hash(src + text);
if(!reload && in_array(id, evalscripts)) return;
if(reload && $(id)) {
$(id).parentNode.removeChild($(id));
}

evalscripts.push(id);
var scriptNode = document.createElement("script");
scriptNode.type = "text/javascript";
scriptNode.id = id;
scriptNode.charset = charset ? charset : (BROWSER.firefox ? document.characterSet : document.charset);
try {
if(src) {
scriptNode.src = src;
scriptNode.onloadDone = false;
scriptNode.onload = function () {
scriptNode.onloadDone = true;
JSLOADED[src] = 1;
};
scriptNode.onreadystatechange = function () {
if((scriptNode.readyState == 'loaded' || scriptNode.readyState == 'complete') && !scriptNode.onloadDone) {
scriptNode.onloadDone = true;
JSLOADED[src] = 1;
}
};
} else if(text){
scriptNode.text = text;
}
document.getElementsByTagName('head')[0].appendChild(scriptNode);
} catch(e) {}
}
  • 返回按ID检索的元素对象
function $(id) {
return !id ? null : document.getElementById(id);
}
  • 跨浏览器绑定事件
function addEventSamp(obj,evt,fn){ 
if(!oTarget){return;}
if (obj.addEventListener) {
obj.addEventListener(evt, fn, false);
}else if(obj.attachEvent){
obj.attachEvent('on'+evt,fn);
}else{
oTarget["on" + sEvtType] = fn;
}
}
  • 跨浏览器删除事件
function delEvt(obj,evt,fn){
if(!obj){return;}
if(obj.addEventListener){
obj.addEventListener(evt,fn,false);
}else if(oTarget.attachEvent){
obj.attachEvent("on" + evt,fn);
}else{
obj["on" + evt] = fn;
}
}
  • 为元素添加on方法
Element.prototype.on = Element.prototype.addEventListener;

NodeList.prototype.on = function (event, fn) {、
[]['forEach'].call(this, function (el) {
el.on(event, fn);
});
return this;
};
  • 为元素添加trigger方法
Element.prototype.trigger = function (type, data) {
var event = document.createEvent('HTMLEvents');
event.initEvent(type, true, true);
event.data = data || {};
event.eventName = type;
event.target = this;
this.dispatchEvent(event);
return this;
};

NodeList.prototype.trigger = function (event) {
[]['forEach'].call(this, function (el) {
el['trigger'](event);
});
return this;
};
  • 检验URL链接是否有效
function getUrlState(URL){ 
var xmlhttp = new ActiveXObject("microsoft.xmlhttp");
xmlhttp.Open("GET",URL, false);
try{
xmlhttp.Send();
}catch(e){
}finally{
var result = xmlhttp.responseText;
if(result){
if(xmlhttp.Status==200){
return(true);
}else{
return(false);
}
}else{
return(false);
}
}
}
  • 格式化CSS样式代码
function formatCss(s){//格式化代码
s = s.replace(/\s*([\{\}\:\;\,])\s*/g, "$1");
s = s.replace(/;\s*;/g, ";"); //清除连续分号
s = s.replace(/\,[\s\.\#\d]*{/g, "{");
s = s.replace(/([^\s])\{([^\s])/g, "$1 {\n\t$2");
s = s.replace(/([^\s])\}([^\n]*)/g, "$1\n}\n$2");
s = s.replace(/([^\s]);([^\s\}])/g, "$1;\n\t$2");
return s;
}
  • 压缩CSS样式代码
function compressCss (s) {//压缩代码
s = s.replace(/\/\*(.|\n)*?\*\//g, ""); //删除注释
s = s.replace(/\s*([\{\}\:\;\,])\s*/g, "$1");
s = s.replace(/\,[\s\.\#\d]*\{/g, "{"); //容错处理
s = s.replace(/;\s*;/g, ";"); //清除连续分号
s = s.match(/^\s*(\S+(\s+\S+)*)\s*$/); //去掉首尾空白
return (s == null) ? "" : s[1];
}
  • 获取当前路径
var currentPageUrl = "";
if (typeof this.href === "undefined") {
currentPageUrl = document.location.toString().toLowerCase();
}else {
currentPageUrl = this.href.toString().toLowerCase();
}
  • 判断是否移动设备
function isMobile(){
if (typeof this._isMobile === 'boolean'){
return this._isMobile;
}
var screenWidth = this.getScreenWidth();
var fixViewPortsExperiment = rendererModel.runningExperiments.FixViewport ||rendererModel.runningExperiments.fixviewport;
var fixViewPortsExperimentRunning = fixViewPortsExperiment && (fixViewPortsExperiment.toLowerCase() === "new");
if(!fixViewPortsExperiment){
if(!this.isAppleMobileDevice()){
screenWidth = screenWidth/window.devicePixelRatio;
}
}
var isMobileScreenSize = screenWidth < 600;
var isMobileUserAgent = false;
this._isMobile = isMobileScreenSize && this.isTouchScreen();
return this._isMobile;
}
  • 判断是否移动设备访问
function isMobileUserAgent(){
return (/iphone|ipod|android.*mobile|windows.*phone|blackberry.*mobile/i.test(window.navigator.userAgent.toLowerCase()));
}
  • 判断是否苹果移动设备访问
function isAppleMobileDevice(){
return (/iphone|ipod|ipad|Macintosh/i.test(navigator.userAgent.toLowerCase()));
}
  • 判断是否安卓移动设备访问
function isAndroidMobileDevice(){
return (/android/i.test(navigator.userAgent.toLowerCase()));
}
  • 判断是否Touch屏幕
function isTouchScreen(){
return (('ontouchstart' in window) || window.DocumentTouch && document instanceof DocumentTouch);
}
  • 判断是否打开视窗
function isViewportOpen() {
return !!document.getElementById('wixMobileViewport');
}
  • 获取移动设备初始化大小
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;
}
  • 获取移动设备最大化大小
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;
}
}
  • 获取移动设备屏幕宽度
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;
}
  • 完美判断是否为网址
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;
}
}
  • 获取页面高度
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);
}
  • 获取页面scrollLeft
function getPageScrollLeft(){
var a = document;
return a.documentElement.scrollLeft || a.body.scrollLeft;
}
  • 获取页面可视宽度
function getPageViewWidth(){
var d = document, a = d.compatMode == "BackCompat"
? d.body
: d.documentElement;
return a.clientWidth;
}
  • 获取页面宽度
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);
}
  • 获取页面scrollTop
function getPageScrollTop(){
var a = document;
return a.documentElement.scrollTop || a.body.scrollTop;
}
  • 获取页面可视高度
function getPageViewHeight() {
var d = document, a = d.compatMode == "BackCompat"
? d.body
: d.documentElement;
return a.clientHeight;
}
  • 去掉url前缀
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;
}
  • 随机数时间戳
function uniqueId(){
var a=Math.random,b=parseInt;
return Number(new Date()).toString()+b(10*a())+b(10*a())+b(10*a());
}
  • 全角半角转换
//iCase: 0全到半,1半到全,其他不转化
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("");
}
  • 确认是否键盘有效输入值
function checkKey(iKey){
if(iKey == 32 || iKey == 229){return true;}/*空格和异常*/
if(iKey>47 && iKey < 58){return true;}/*数字*/
if(iKey>64 && iKey < 91){return true;}/*字母*/
if(iKey>95 && iKey < 108){return true;}/*数字键盘1*/
if(iKey>108 && iKey < 112){return true;}/*数字键盘2*/
if(iKey>185 && iKey < 193){return true;}/*符号1*/
if(iKey>218 && iKey < 223){return true;}/*符号2*/
return false;
}
  • 日期格式化函数+调用方法
Date.prototype.format = function(format){
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.$1.length==1 ? o[k] :("00"+ o[k]).substr((""+ o[k]).length));
}
return format;
}
alert(new Date().format("yyyy-MM-dd hh:mm:ss"));
  • 常用的正则表达式
//正整数
/^[0-9]*[1-9][0-9]*$/;
//负整数
/^-[0-9]*[1-9][0-9]*$/;
//正浮点数
/^(([0-9]+\.[0-9]*[1-9][0-9]*)|([0-9]*[1-9][0-9]*\.[0-9]+)|([0-9]*[1-9][0-9]*))$/;
//负浮点数
/^(-(([0-9]+\.[0-9]*[1-9][0-9]*)|([0-9]*[1-9][0-9]*\.[0-9]+)|([0-9]*[1-9][0-9]*)))$/;
//浮点数
/^(-?\d+)(\.\d+)?$/;
//email地址
/^[\w-]+(\.[\w-]+)*@[\w-]+(\.[\w-]+)+$/;
//url地址
/^[a-zA-z]+://(\w+(-\w+)*)(\.(\w+(-\w+)*))*(\?\S*)?$/;
或:^http:\/\/[A-Za-z0-9]+\.[A-Za-z0-9]+[\/=\?%\-&_~`@[\]\':+!]*([^<>\"\"])*$
//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])$/;
//匹配中文字符
/[\u4e00-\u9fa5]/;
//匹配帐号是否合法(字母开头,允许5-10字节,允许字母数字下划线)
/^[a-zA-Z][a-zA-Z0-9_]{4,9}$/;
//匹配空白行的正则表达式
/\n\s*\r/;
//匹配中国邮政编码
/[1-9]\d{5}(?!\d)/;
//匹配身份证
/\d{15}|\d{18}/;
//匹配国内电话号码
/(\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则表达式
/^\s*|\s*$/;
//匹配HTML标记的正则表达式
< (\S*?)[^>]*>.*?|< .*? />;
//sql 语句
^(select|drop|delete|create|update|insert).*$
//提取信息中的网络链接
(h|H)(r|R)(e|E)(f|F) *= *('|")?(\w|\\|\/|\.)+('|"| *|>)?
//提取信息中的邮件地址
\w+([-+.]\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*
//提取信息中的图片链接
(s|S)(r|R)(c|C) *= *('|")?(\w|\\|\/|\.)+('|"| *|>)?
//提取信息中的 IP 地址
(\d+)\.(\d+)\.(\d+)\.(\d+)
//取信息中的中国手机号码
(86)*0*13\d{9}
//提取信息中的中国邮政编码
[1-9]{1}(\d+){5}
//提取信息中的浮点数(即小数)
(-?\d*)\.?\d+
//提取信息中的任何数字
(-?\d*)(\.\d+)?
//电话区号
^0\d{2,3}$
//腾讯 QQ 号
^[1-9]*[1-9][0-9]*$
//帐号(字母开头,允许 5-16 字节,允许字母数字下划线)
^[a-zA-Z][a-zA-Z0-9_]{4,15}$
//中文、英文、数字及下划线
^[\u4e00-\u9fa5_a-zA-Z0-9]+$
  • 返回顶部的通用方法
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');
  • 获得URL中GET参数值
// 用法:如果地址是 test.htm?t1=1&t2=2&t3=3, 那么能取得:GET["t1"], GET["t2"], GET["t3"]
function get_get(){
querystr = window.location.href.split("?")
if(querystr[1]){
GETs = querystr[1].split("&");
GET = [];
for(i=0;i<GETs.length;i++){
tmp_arr = GETs.split("=")
key=tmp_arr[0]
GET[key] = tmp_arr[1]
}
}
return querystr[1];
}
  • 打开一个窗体通用方法
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();
}
}
  • 提取页面代码中所有网址
var aa = document.documentElement.outerHTML.match(/(url\(|src=|href=)[\"\']*([^\"\'\(\)\<\>\[\] ]+)[\"\'\)]*|(http:\/\/[\w\-\.]+[^\"\'\(\)\<\>\[\] ]+)/ig).join("\r\n").replace(/^(src=|href=|url\()[\"\']*|[\"\'\>\) ]*$/igm,"");
alert(aa);
  • 清除相同的数组
String.prototype.unique=function(){
var x=this.split(/[\r\n]+/);
var y='';
for(var i=0;i<x.length;i++){
if(!new RegExp("^"+x.replace(/([^\w])/ig,"\\$1")+"$","igm").test(y)){
y+=x+"\r\n"
}
}
return y
};
  • 按字母排序,对每行进行数组排序
function SetSort(){
var text=K1.value.split(/[\r\n]/).sort().join("\r\n");//顺序
var test=K1.value.split(/[\r\n]/).sort().reverse().join("\r\n");//反序
K1.value=K1.value!=text?text:test;
}
  • 清除html代码中的脚本
function clear_script(){
K1.value=K1.value.replace(/<script.*?>[\s\S]*?<\/script>|\s+on[a-zA-Z]{3,16}\s?=\s?"[\s\S]*?"|\s+on[a-zA-Z]{3,16}\s?=\s?'[\s\S]*?'|\s+on[a-zA-Z]{3,16}\s?=[^ >]+/ig,"");
}
动态执行JavaScript脚本

function javascript(){
try{
eval(K1.value);
}catch(e){
alert(e.message);
}
}
  • 金额大写转换函数
function transform(tranvalue) {
try {
var i = 1;
var dw2 = new Array("", "万", "亿"); //大单位
var dw1 = new Array("拾", "佰", "仟"); //小单位
var dw = new Array("零", "壹", "贰", "叁", "肆", "伍", "陆", "柒", "捌", "玖"); //整数部分用
//以下是小写转换成大写显示在合计大写的文本框中
//分离整数与小数
var source = splits(tranvalue);
var num = source[0];
var dig = source[1];
//转换整数部分
var k1 = 0; //计小单位
var k2 = 0; //计大单位
var sum = 0;
var str = "";
var len = source[0].length; //整数的长度
for (i = 1; i <= len; i++) {
var n = source[0].charAt(len - i); //取得某个位数上的数字
var bn = 0;
if (len - i - 1 >= 0) {
bn = source[0].charAt(len - i - 1); //取得某个位数前一位上的数字
}
sum = sum + Number(n);
if (sum != 0) {
str = dw[Number(n)].concat(str); //取得该数字对应的大写数字,并插入到str字符串的前面
if (n == '0') sum = 0;
}
if (len - i - 1 >= 0) { //在数字范围内
if (k1 != 3) { //加小单位
if (bn != 0) {
str = dw1[k1].concat(str);
}
k1++;
} else { //不加小单位,加大单位
k1 = 0;
var temp = str.charAt(0);
if (temp == "万" || temp == "亿") //若大单位前没有数字则舍去大单位
str = str.substr(1, str.length - 1);
str = dw2[k2].concat(str);
sum = 0;
}
}
if (k1 == 3){ //小单位到千则大单位进一
k2++;
}
}
//转换小数部分
var strdig = "";
if (dig != "") {
var n = dig.charAt(0);
if (n != 0) {
strdig += dw[Number(n)] + "角"; //加数字
}
var n = dig.charAt(1);
if (n != 0) {
strdig += dw[Number(n)] + "分"; //加数字
}
}
str += "元" + strdig;
} catch(e) {
return "0元";
}
return str;
}
//拆分整数与小数
function splits(tranvalue) {
var value = new Array('', '');
temp = tranvalue.split(".");
for (var i = 0; i < temp.length; i++) {
value = temp;
}
return value;
}
  • 获取窗体可见范围的宽与高
function getViewSize(){
var de=document.documentElement;
var db=document.body;
var viewW=de.clientWidth==0 ? db.clientWidth : de.clientWidth;
var viewH=de.clientHeight==0 ? db.clientHeight : de.clientHeight;
return Array(viewW ,viewH);
}
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