/** * JSFrame Name:EasyJs * File Name:JSFrame * Date:2014-11-28 上午10:50:09 * Copyright (c) 2014, China Link Communications LTD All Rights Reserved. * Author:by sicd * Describe: * Commonly used function of js code * */ /** 1、原生JavaScript实现字符串长度截取 2、原生JavaScript获取域名主机 3、原生JavaScript清除空格 4、原生JavaScript替换全部 5、原生JavaScript转义html标签 6、原生JavaScript还原html标签 7、原生JavaScript时间日期格式转换 8、原生JavaScript判断是否为数字类型 9、原生JavaScript设置cookie值 10、原生JavaScript获取cookie值 11、原生JavaScript加入收藏夹 12、原生JavaScript设为首页 13、原生JavaScript判断IE6 14、原生JavaScript加载样式文件 15、原生JavaScript返回脚本内容 16、原生JavaScript清除脚本内容 17、原生JavaScript动态加载脚本文件 18、原生JavaScript返回按ID检索的元素对象 19、原生JavaScript返回浏览器版本内容 20、原生JavaScript元素显示的通用方法 21、原生JavaScript中有insertBefore方法,可惜却没有insertAfter方法?用如下函数实现 22、原生JavaScript中兼容浏览器绑定元素事件 23、原生JavaScript光标停在文字的后面,文本框获得焦点时调用 24、原生JavaScript检验URL链接是否有效 25、原生JavaScript格式化CSS样式代码 26、原生JavaScript压缩CSS样式代码 27、原生JavaScript获取当前路径 28、原生JavaScriptIP转成整型 29、原生JavaScript整型解析为IP地址 30、原生JavaScript实现checkbox全选与全不选 31、原生JavaScript判断是否移动设备 32、原生JavaScript判断是否移动设备访问 33、原生JavaScript判断是否苹果移动设备访问 34、原生JavaScript判断是否安卓移动设备访问 35、原生JavaScript判断是否Touch屏幕 36、原生JavaScript判断是否在安卓上的谷歌浏览器 37、原生JavaScript判断是否打开视窗 38、原生JavaScript获取移动设备初始化大小 39、原生JavaScript获取移动设备最大化大小 40、原生JavaScript获取移动设备屏幕宽度 41、原生JavaScript完美判断是否为网址 42、原生JavaScript根据样式名称检索元素对象 43、原生JavaScript判断是否以某个字符串开头 44、原生JavaScript判断是否以某个字符串结束 45、原生JavaScript返回IE浏览器的版本号 46、原生JavaScript获取页面高度 47、原生JavaScript获取页面scrollLeft 48、原生JavaScript获取页面可视宽度 49、原生JavaScript获取页面宽度 **/ /** * 字符串长度截取 params: str:字符串 length:长度 */ function cutstr(str, length) { var temp; var icount = 0; var patrn = /[^\x00-\xff]/; var 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 + "..."; } /** * 获取域名主机 params: url:域名 */ function getHost(url) { var host = "null"; if (typeof url == "undefined" || null == url) { url = window.location.href; } var regex = /^\w+\:\/\/([^\/]*).*/; var match = url.match(regex); if (typeof match != "undefined" && null != match) { host = match[1]; } return host; } /** * 清除空格 为String 对象添加方法 trim() 以此兼容不支持此方法的浏览器 */ if (!String.prototype.trim) { String.prototype.trim = function() { var reExtraSpace = /^\s*(.*?)\s+$/; return this.replace(reExtraSpace, "$1"); }; } /** * 替换全部,多种方式的替换规则 为String 对象添加方法 replaceAll 兼容浏览器 * * 第三参数 修饰符 描述 i 执行对大小写不敏感的匹配。 g 执行全局匹配(查找所有匹配而非在找到第一个匹配后停止)。 m 执行多行匹配。 */ if (!String.prototype.replaceAll) { String.prototype.replaceAll = function(s1, s2, type) { return this.replace(new RegExp(s1, type), s2); }; } /** * 转义html标签 */ function htmlEncode(text) { return text.replace(/&/g, ‘&‘).replace(/\"/g, ‘"‘).replace(/</g, ‘<‘).replace(/>/g, ‘>‘); } /** * 还原html标签 */ function htmlDecode(text) { return text.replace(/&/g, ‘&‘).replace(/"/g, ‘\"‘).replace( /</g, ‘<‘).replace(/>/g, ‘>‘); } /** * 时间日期格式转换 (按需更改,是否调用原方法, 还是重写) */ if (!Date.prototye.format && !Date.prototype.Format) { Date.prototype.Format = function(formatStr) { var str = formatStr; var Week = [ ‘日‘, ‘一‘, ‘二‘, ‘三‘, ‘四‘, ‘五‘, ‘六‘ ]; str = str.replace(/yyyy|YYYY/, this.getFullYear()); str = str.replace(/yy|YY/, (this.getYear() % 100) > 9 ? (this.getYear() % 100).toString() : ‘0‘ + (this.getYear() % 100)); str = str.replace(/MM/, (this.getMonth() + 1) > 9 ? (this.getMonth() + 1).toString() : ‘0‘ + (this.getMonth() + 1)); str = str.replace(/M/g, (this.getMonth() + 1)); str = str.replace(/w|W/g, Week[this.getDay()]); str = str.replace(/dd|DD/, this.getDate() > 9 ? this.getDate() .toString() : ‘0‘ + this.getDate()); str = str.replace(/d|D/g, this.getDate()); str = str.replace(/hh|HH/, this.getHours() > 9 ? this.getHours() .toString() : ‘0‘ + this.getHours()); str = str.replace(/h|H/g, this.getHours()); str = str.replace(/mm/, this.getMinutes() > 9 ? this.getMinutes() .toString() : ‘0‘ + this.getMinutes()); str = str.replace(/m/g, this.getMinutes()); str = str.replace(/ss|SS/, this.getSeconds() > 9 ? this.getSeconds() .toString() : ‘0‘ + this.getSeconds()); str = str.replace(/s|S/g, this.getSeconds()); return str; }; } /** * 判断是否为数字类型 */ function isDigit(value) { var patrn = /^[0-9]*$/; if (patrn.exec(value) == null || value == "") { return false; } else { return true; } } /** * 设置cookie值 escape(str) 对值进行编码 unescape(str)进行解码 (ECMAScript v3 反对使用该方法,应用使用 * decodeURI() 和 decodeURIComponent() 替代它。) * * param: * * name:名称 * * value:名称对应值 * * path:为了控制cookie可以访问的目录 例: path=/shop";就表示当前cookie仅能在shop目录下使用(url地址)。 * * expires:过期时间 F * domain : 指定可访问cookie的主机名 域名 */ 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=sicd.com;"; } /** * 获取cookie值 unescape()不推荐使用 用 decodeURI() * */ 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://***‘); } 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://***‘); } } /** * 判断IE6 设置背景图片缓存解决闪烁问题 (ie6默认背景图片不缓存) * * document.execCommand() 用法 想了解的童鞋请访问: * http://www.cnblogs.com/sicd/p/4134641.html 记得点个赞哟 ^_^ */ var ua = navigator.userAgent.toLowerCase(); var isIE6 = ua.indexOf("msie 6") > -1; if (isIE6) { try { document.execCommand("BackgroundImageCache", false, true); } catch (e) { } } /** * 动态加载 CSS 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 */ try { if (typeof (eval(‘$‘)) == "function") { } else { function $(id) { return !id ? null : document.getElementById(id); } } } catch (e) { function $(id) { return !id ? null : document.getElementById(id); } } /** * 返回浏览器版本 * * 返回一个对象,对象属性:type,version */ function getExplorerInfo() { var explorer = window.navigator.userAgent.toLowerCase(); // ie if (explorer.indexOf("msie") >= 0) { var ver = explorer.match(/msie ([\d.]+)/)[1]; return { type : "IE", version : ver }; } // firefox else if (explorer.indexOf("firefox") >= 0) { var ver = explorer.match(/firefox\/([\d.]+)/)[1]; return { type : "Firefox", version : ver }; } // Chrome else if (explorer.indexOf("chrome") >= 0) { var ver = explorer.match(/chrome\/([\d.]+)/)[1]; return { type : "Chrome", version : ver }; } // Opera else if (explorer.indexOf("opera") >= 0) { var ver = explorer.match(/opera.([\d.]+)/)[1]; return { type : "Opera", version : ver }; } // Safari else if (explorer.indexOf("Safari") >= 0) { var ver = explorer.match(/version\/([\d.]+)/)[1]; return { type : "Safari", version : ver }; } } /** * 显示元素 待验证 visibility hideen 会隐藏元素,但是会占用作用域 */ // function $(id) { // return !id ? null : document.getElementById(id); // } function display(id) { var obj = $(id); if (obj.style.visibility) { obj.style.visibility = obj.style.visibility == ‘visible‘ ? ‘hidden‘ : ‘visible‘; } else { obj.style.display = obj.style.display == ‘‘ ? ‘none‘ : ‘‘; } } /** * 与insertBefore方法(已存在)对应的insertAfter方法 * * */ function insertAfter(newChild, refChild) { var parElem = refChild.parentNode; if (parElem.lastChild == refChild) { refChild.appendChild(newChild); } else { parElem.insertBefore(newChild, refChild.nextSibling); } } /** * 兼容浏览器绑定元素事件 * * obj:元素 * * evt:时间名称 * * fn:触发函数 * */ function addEventSamp(obj, evt, fn) { if (obj.addEventListener) { obj.addEventListener(evt, fn, false); } else if (obj.attachEvent) { obj.attachEvent(‘on‘ + evt, fn); } } /** * 光标停在文字的后面,文本框获得焦点时调用 */ function focusLast() { var e = event.srcElement; var r = e.createTextRange(); r.moveStart(‘character‘, e.value.length); r.collapse(true); r.select(); } /** * 检验URL链接是否有效 * * .Open("GET",URL, false) true:异步;false:同步 */ function getUrlState(URL) { var suc = false; 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) { suc = true; } else { suc = false; } } else { suc = false; } } return suc; } /** * 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 yasuoCss(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 */ function getCurrentPageUrl() { var currentPageUrl = ""; if (typeof this.href === "undefined") { currentPageUrl = document.location.toString().toLowerCase(); } else { currentPageUrl = this.href.toString().toLowerCase(); } return currentPageUrl; } /** * ip 转 整型 */ function _ip2int(ip) { var num = 0; ip = ip.split("."); num = Number(ip[0]) * 256 * 256 * 256 + Number(ip[1]) * 256 * 256 + Number(ip[2]) * 256 + Number(ip[3]); num = num >>> 0; return num; } /** * 整型解析为IP地址 */ function _int2iP(num) { var str; var tt = new Array(); tt[0] = (num >>> 24) >>> 0; tt[1] = ((num << 8) >>> 24) >>> 0; tt[2] = (num << 16) >>> 24; tt[3] = (num << 24) >>> 24; str = String(tt[0]) + "." + String(tt[1]) + "." + String(tt[2]) + "." + String(tt[3]); return str; } /** * 实现checkbox全选与全不选 */ function checkAll(selectAllBoxId, childBoxsId) { var selectall = document.getElementById(selectAllBoxId); var allbox = document.getElementsByName(childBoxsId); if (selectall.checked) { for ( var i = 0; i < allbox.length; i++) { allbox[i].checked = true; } } else { for ( var i = 0; i < allbox.length; i++) { allbox[i].checked = false; } } } /** * 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); } /** * 判断是否在安卓上的谷歌浏览器 */ 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; } /** * 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; } } /** * 根据样式名称检索元素对象 */ function getElementsByClassName(name) { var tags = document.getElementsByTagName(‘*‘) || document.all; var els = []; for (var i = 0; i < tags.length; i++) { if (tags[i].className) { var cs = tags[i].className.split(‘ ‘); for (var j = 0; j < cs.length; j++) { if (name == cs[j]) { els.push(tags[i]); break; } } } } return els; } /** * 判断是否以某个字符串开头 */ if(!String.prototype.startWith){ String.prototype.startWith = function (s) { return this.indexOf(s) == 0; }; } /** * 判断是否以某个字符串结束 */ if(!String.prototype.endWith){ String.prototype.endWith = function (s) { var d = this.length - s.length; return (d >= 0 && this.lastIndexOf(s) == d); }; } /** * 返回IE浏览器的版本号 */ function getIE(){ if (window.ActiveXObject){ var v = navigator.userAgent.match(/MSIE ([^;]+)/)[1]; return parseFloat(v.substring(0, v.indexOf("."))); } 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; } /*****************************补充 ********************************************/ //删除cookies function delCookie(name) { var exp = new Date(); exp.setTime(exp.getTime() - 1); var cval=getCookie(name); if(cval!=null) document.cookie= name + "="+cval+";expires="+exp.toGMTString(); }
时间: 2024-11-10 01:34:45