把平时网站上常用的一些实用功能代码片段通通收集起来,方面网友们学习使用,利用好的话可以加快网友们的开发速度,提高工作效率。 目录如下: 1、原生JavaScript实现字符串长度截取 100、原生JavaScript全角转换为半角函数 1、原生JavaScript实现字符串长度截取 1 function cutstr(str, len) { 2 var temp; 3 var icount = 0; 4 var patrn = /[^\x00-\xff]/; 5 var strre = ""; 6 for (var i = 0; i < str.length; i++) { 7 if (icount < len - 1) { 8 temp = str.substr(i, 1); 9 if (patrn.exec(temp) == null) {10 icount = icount + 111 } else {12 icount = icount + 213 }14 strre += temp15 } else {16 break17 }18 }19 return strre + "..."20 } 2、原生JavaScript获取域名主机 3、原生JavaScript清除空格 1 String.prototype.trim = function() {2 var reExtraSpace = /^\s*(.*?)\s+$/;3 return this.replace(reExtraSpace, "$1")4 }
1 String.prototype.replaceAll = function(s1, s2) {2 return this.replace(new RegExp(s1, "gm"), s2)3 }
1 function HtmlEncode(text) {2 return text.replace(/&/g, '&').replace(/\"/g, '"').replace(/</g, '<').replace(/>/g, '>')3 } 1 function HtmlDecode(text) {2 return text.replace(/&/g, '&').replace(/"/g, '\"').replace(/</g, '<').replace(/>/g, '>')3 } 1 Date.prototype.Format = function(formatStr) { 2 var str = formatStr; 3 var Week = ['日', '一', '二', '三', '四', '五', '六']; 4 str = str.replace(/yyyy|YYYY/, this.getFullYear()); 5 str = str.replace(/yy|YY/, (this.getYear() % 100) > 9 ? (this.getYear() % 100).toString() : '0' + (this.getYear() % 100)); 6 str = str.replace(/MM/, (this.getMonth() + 1) > 9 ? (this.getMonth() + 1).toString() : '0' + (this.getMonth() + 1)); 7 str = str.replace(/M/g, (this.getMonth() + 1)); 8 str = str.replace(/w|W/g, Week[this.getDay()]); 9 str = str.replace(/dd|DD/, this.getDate() > 9 ? this.getDate().toString() : '0' + this.getDate());10 str = str.replace(/d|D/g, this.getDate());11 str = str.replace(/hh|HH/, this.getHours() > 9 ? this.getHours().toString() : '0' + this.getHours());12 str = str.replace(/h|H/g, this.getHours());13 str = str.replace(/mm/, this.getMinutes() > 9 ? this.getMinutes().toString() : '0' + this.getMinutes());14 str = str.replace(/m/g, this.getMinutes());15 str = str.replace(/ss|SS/, this.getSeconds() > 9 ? this.getSeconds().toString() : '0' + this.getSeconds());16 str = str.replace(/s|S/g, this.getSeconds());17 return str18 }
1 function setCookie(name, value, Hours) {2 var d = new Date();3 var offset = 8;4 var utc = d.getTime() + (d.getTimezoneOffset() * 60000);5 var nd = utc + (3600000 * offset);6 var exp = new Date(nd);7 exp.setTime(exp.getTime() + Hours * 60 * 60 * 1000);8 document.cookie = name + "=" + escape(value) + ";path=/;expires=" + exp.toGMTString() + ";domain=360doc.com;"9 }
1 function getCookie(name) {2 var arr = document.cookie.match(new RegExp("(^| )" + name + "=([^;]*)(;|$)"));3 if (arr != null) return unescape(arr[2]);4 return null5 }
1 function setHomepage() { 2 if (document.all) { 3 document.body.style.behavior = 'url(#default#homepage)'; 4 document.body.setHomePage('http://***') 5 } else if (window.sidebar) { 6 if (window.netscape) { 7 try { 8 netscape.security.PrivilegeManager.enablePrivilege("UniversalXPConnect") 9 } catch(e) {10 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")11 }12 }13 var prefs = Components.classes['@mozilla.org/preferences-service;1'].getService(Components.interfaces.nsIPrefBranch);14 prefs.setCharPref('browser.startup.homepage', 'http://***')15 }16 } 1 function LoadStyle(url) { 2 try { 3 document.createStyleSheet(url) 4 } catch(e) { 5 var cssLink = document.createElement('link'); 6 cssLink.rel = 'stylesheet'; 7 cssLink.type = 'text/css'; 8 cssLink.href = url; 9 var head = document.getElementsByTagName('head')[0];10 head.appendChild(cssLink)11 }12 } 15、原生JavaScript返回脚本内容 1 function evalscript(s) { 2 if(s.indexOf('<script') == -1) return s; 3 var p = /<script[^\>]*?>([^\x00]*?)<\/script>/ig; 4 var arr = []; 5 while(arr = p.exec(s)) { 6 var p1 = /<script[^\>]*?src=\"([^\>]*?)\"[^\>]*?(reload=\"1\")?(?:charset=\"([\w\-]+?)\")?><\/script>/i; 7 var arr1 = []; 8 arr1 = p1.exec(arr[0]); 9 if(arr1) {10 appendscript(arr1[1], '', arr1[2], arr1[3]);11 } else {12 p1 = /<script(.*?)>([^\x00]+?)<\/script>/i;13 arr1 = p1.exec(arr[0]);14 appendscript('', arr1[2], arr1[1].indexOf('reload=') != -1);15 }16 }17 return s;18 } 16、原生JavaScript清除脚本内容 1 function stripscript(s) {2 return s.replace(/<script.*?>.*?<\/script>/ig, '');3 } 17、原生JavaScript动态加载脚本文件 1 function appendscript(src, text, reload, charset) { 2 var id = hash(src + text); 3 if(!reload && in_array(id, evalscripts)) return; 4 if(reload && $(id)) { 5 $(id).parentNode.removeChild($(id)); 6 } 7 8 evalscripts.push(id); 9 var scriptNode = document.createElement("script");10 scriptNode.type = "text/javascript";11 scriptNode.id = id;12 scriptNode.charset = charset ? charset : (BROWSER.firefox ? document.characterSet : document.charset);13 try {14 if(src) {15 scriptNode.src = src;16 scriptNode.onloadDone = false;17 scriptNode.onload = function () {18 scriptNode.onloadDone = true;19 JSLOADED[src] = 1;20 };21 scriptNode.onreadystatechange = function () {22 if((scriptNode.readyState == 'loaded' || scriptNode.readyState == 'complete') && !scriptNode.onloadDone) {23 scriptNode.onloadDone = true;24 JSLOADED[src] = 1;25 }26 };27 } else if(text){28 scriptNode.text = text;29 }30 document.getElementsByTagName('head')[0].appendChild(scriptNode);31 } catch(e) {}32 } 18、原生JavaScript返回按ID检索的元素对象 1 function $(id) {2 return !id ? null : document.getElementById(id);3 } 19、原生JavaScript返回浏览器版本内容 1 function browserVersion(types) { 2 var other = 1; 3 for(i in types) { 4 var v = types[i] ? types[i] : i; 5 if(USERAGENT.indexOf(v) != -1) { 6 var re = new RegExp(v + '(\\/|\\s)([\\d\\.]+)', 'ig'); 7 var matches = re.exec(USERAGENT); 8 var ver = matches != null ? matches[2] : 0; 9 other = ver !== 0 && v != 'mozilla' ? 0 : other;10 }else {11 var ver = 0;12 }13 eval('BROWSER.' + i + '= ver');14 }15 BROWSER.other = other;16 } 20、原生JavaScript元素显示的通用方法 1 function $(id) { 2 return !id ? null : document.getElementById(id); 3 } 4 function display(id) { 5 var obj = $(id); 6 if(obj.style.visibility) { 7 obj.style.visibility = obj.style.visibility == 'visible' ? 'hidden' : 'visible'; 8 } else { 9 obj.style.display = obj.style.display == '' ? 'none' : '';10 }11 } 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 1 function getUrlState(URL){ 2 var xmlhttp = new ActiveXObject("microsoft.xmlhttp"); 3 xmlhttp.Open("GET",URL, false); 4 try{ 5 xmlhttp.Send(); 6 }catch(e){ 7 }finally{ 8 var result = xmlhttp.responseText; 9 if(result){ 10 if(xmlhttp.Status==200){ 11 return(true); 12 }else{ 13 return(false); 14 } 15 }else{ 16 return(false); 17 } 18 } 19 } 25、原生JavaScript格式化CSS样式代码 1 function formatCss(s){//格式化代码2 s = s.replace(/\s*([\{\}\:\;\,])\s*/g, "$1");3 s = s.replace(/;\s*;/g, ";"); //清除连续分号4 s = s.replace(/\,[\s\.\#\d]*{/g, "{");5 s = s.replace(/([^\s])\{([^\s])/g, "$1 {\n\t$2");6 s = s.replace(/([^\s])\}([^\n]*)/g, "$1\n}\n$2");7 s = s.replace(/([^\s]);([^\s\}])/g, "$1;\n\t$2");8 return s;9 } 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 1 function checkAll() { 2 var selectall = document.getElementById("selectall"); 3 var allbox = document.getElementsByName("allbox"); 4 if (selectall.checked) { 5 for (var i = 0; i < allbox.length; i++) { 6 allbox[i].checked = true; 7 } 8 } else { 9 for (var i = 0; i < allbox.length; i++) {10 allbox[i].checked = false;11 }12 }13 } 31、原生JavaScript判断是否移动设备 1 function isMobile(){ 2 if (typeof this._isMobile === 'boolean'){ 3 return this._isMobile; 4 } 5 var screenWidth = this.getScreenWidth(); 6 var fixViewPortsExperiment = rendererModel.runningExperiments.FixViewport || rendererModel.runningExperiments.fixviewport; 7 var fixViewPortsExperimentRunning = fixViewPortsExperiment && (fixViewPortsExperiment.toLowerCase() === "new"); 8 if(!fixViewPortsExperiment){ 9 if(!this.isAppleMobileDevice()){10 screenWidth = screenWidth/window.devicePixelRatio;11 }12 }13 var isMobileScreenSize = screenWidth < 600;14 var isMobileUserAgent = false;15 this._isMobile = isMobileScreenSize && this.isTouchScreen();16 return this._isMobile;17 } 32、原生JavaScript判断是否移动设备访问 1 function isMobileUserAgent(){2 return (/iphone|ipod|android.*mobile|windows.*phone|blackberry.*mobile/i.test(window.navigator.userAgent.toLowerCase()));3 } 33、原生JavaScript判断是否苹果移动设备访问 1 function isAppleMobileDevice(){2 return (/iphone|ipod|ipad|Macintosh/i.test(navigator.userAgent.toLowerCase()));3 } 34、原生JavaScript判断是否安卓移动设备访问 1 function isAndroidMobileDevice(){2 return (/android/i.test(navigator.userAgent.toLowerCase()));3 } 1 function isTouchScreen(){2 return (('ontouchstart' in window) || window.DocumentTouch && document instanceof DocumentTouch);3 } 36、原生JavaScript判断是否在安卓上的谷歌浏览器 1 function isNewChromeOnAndroid(){ 2 if(this.isAndroidMobileDevice()){ 3 var userAgent = navigator.userAgent.toLowerCase(); 4 if((/chrome/i.test(userAgent))){ 5 var parts = userAgent.split('chrome/'); 6 7 var fullVersionString = parts[1].split(" ")[0]; 8 var versionString = fullVersionString.split('.')[0]; 9 var version = parseInt(versionString);10 11 if(version >= 27){12 return true;13 }14 }15 }16 return false;17 } 1 function isViewportOpen() {2 return !!document.getElementById('wixMobileViewport');3 }
1 function getInitZoom(){ 2 if(!this._initZoom){ 3 var screenWidth = Math.min(screen.height, screen.width); 4 if(this.isAndroidMobileDevice() && !this.isNewChromeOnAndroid()){ 5 screenWidth = screenWidth/window.devicePixelRatio; 6 } 7 this._initZoom = screenWidth /document.body.offsetWidth; 8 } 9 return this._initZoom;10 }
1 function getZoom(){ 2 var screenWidth = (Math.abs(window.orientation) === 90) ? Math.max(screen.height, screen.width) : Math.min(screen.height, screen.width); 3 if(this.isAndroidMobileDevice() && !this.isNewChromeOnAndroid()){ 4 screenWidth = screenWidth/window.devicePixelRatio; 5 } 6 var FixViewPortsExperiment = rendererModel.runningExperiments.FixViewport || rendererModel.runningExperiments.fixviewport; 7 var FixViewPortsExperimentRunning = FixViewPortsExperiment && (FixViewPortsExperiment === "New" || FixViewPortsExperiment === "new"); 8 if(FixViewPortsExperimentRunning){ 9 return screenWidth / window.innerWidth;10 }else{11 return screenWidth / document.body.offsetWidth;12 }13 }
1 function getScreenWidth(){ 2 var smallerSide = Math.min(screen.width, screen.height); 3 var fixViewPortsExperiment = rendererModel.runningExperiments.FixViewport || rendererModel.runningExperiments.fixviewport; 4 var fixViewPortsExperimentRunning = fixViewPortsExperiment && (fixViewPortsExperiment.toLowerCase() === "new"); 5 if(fixViewPortsExperiment){ 6 if(this.isAndroidMobileDevice() && !this.isNewChromeOnAndroid()){ 7 smallerSide = smallerSide/window.devicePixelRatio; 8 } 9 }10 return smallerSide;11 }
1 function IsURL(strUrl) {2 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_:\@&?=+,.!\/~%\$]*)?)$/i3 if (regular.test(strUrl)) {4 return true;5 }6 else {7 return false;8 }9 }
1 function getElementsByClassName(name) { 2 var tags = document.getElementsByTagName('*') || document.all; 3 var els = []; 4 for (var i = 0; i < tags.length; i++) { 5 if (tags[i].className) { 6 var cs = tags[i].className.split(' '); 7 for (var j = 0; j < cs.length; j++) { 8 if (name == cs[j]) { 9 els.push(tags[i]);10 break11 }12 }13 }14 }15 return els16 } 43、原生JavaScript判断是否以某个字符串开头 1 String.prototype.startWith = function (s) {2 return this.indexOf(s) == 03 } 1 String.prototype.endWith = function (s) {2 var d = this.length - s.length;3 return (d >= 0 && this.lastIndexOf(s) == d)4 }
1 function getPageHeight(){2 var g = document, a = g.body, f = g.documentElement, d = g.compatMode == "BackCompat"3 ? a4 : g.documentElement;5 return Math.max(f.scrollHeight, a.scrollHeight, d.clientHeight);6 }
1 function getPageScrollLeft(){2 var a = document;3 return a.documentElement.scrollLeft || a.body.scrollLeft;4 }
1 function getPageViewWidth(){2 var d = document, a = d.compatMode == "BackCompat"3 ? d.body4 : d.documentElement;5 return a.clientWidth;6 }
1 function getPageWidth(){2 var g = document, a = g.body, f = g.documentElement, d = g.compatMode == "BackCompat"3 ? a4 : g.documentElement;5 return Math.max(f.scrollWidth, a.scrollWidth, d.clientWidth);6 }
1 function getPageScrollTop(){2 var a = document;3 return a.documentElement.scrollTop || a.body.scrollTop;4 }
1 function getPageViewHeight() {2 var d = document, a = d.compatMode == "BackCompat"3 ? d.body4 : d.documentElement;5 return a.clientHeight;6 }
1 function uniqueId(){2 var a=Math.random,b=parseInt;3 return Number(new Date()).toString()+b(10*a())+b(10*a())+b(10*a());4 }
1 function chgCase(sStr,iCase){ 2 if(typeof sStr != "string" || sStr.length <= 0 || !(iCase === 0 || iCase == 1)){ 3 return sStr; 4 } 5 var i,oRs=[],iCode; 6 if(iCase){/*半->全*/ 7 for(i=0; i<sStr.length;i+=1){ 8 iCode = sStr.charCodeAt(i); 9 if(iCode == 32){10 iCode = 12288; 11 }else if(iCode < 127){12 iCode += 65248;13 }14 oRs.push(String.fromCharCode(iCode)); 15 } 16 }else{/*全->半*/17 for(i=0; i<sStr.length;i+=1){ 18 iCode = sStr.charCodeAt(i);19 if(iCode == 12288){20 iCode = 32;21 }else if(iCode > 65280 && iCode < 65375){22 iCode -= 65248; 23 }24 oRs.push(String.fromCharCode(iCode)); 25 } 26 } 27 return oRs.join(""); 28 }
1 function checkKey(iKey){ 2 if(iKey == 32 || iKey == 229){return true;}/*空格和异常*/ 3 if(iKey>47 && iKey < 58){return true;}/*数字*/ 4 if(iKey>64 && iKey < 91){return true;}/*字母*/ 5 if(iKey>95 && iKey < 108){return true;}/*数字键盘1*/ 6 if(iKey>108 && iKey < 112){return true;}/*数字键盘2*/ 7 if(iKey>185 && iKey < 193){return true;}/*符号1*/ 8 if(iKey>218 && iKey < 223){return true;}/*符号2*/ 9 return false;10 }
1 Date.prototype.format = function(format){ //author: meizz 2 var o = { 3 "M+" : this.getMonth()+1, //month 4 "d+" : this.getDate(), //day 5 "h+" : this.getHours(), //hour 6 "m+" : this.getMinutes(), //minute 7 "s+" : this.getSeconds(), //second 8 "q+" : Math.floor((this.getMonth()+3)/3), //quarter 9 "S" : this.getMilliseconds() //millisecond10 }11 if(/(y+)/.test(format)) format=format.replace(RegExp.$1,12 (this.getFullYear()+"").substr(4 - RegExp.$1.length));13 for(var k in o)if(new RegExp("("+ k +")").test(format))14 format = format.replace(RegExp.$1,15 RegExp.$1.length==1 ? o[k] :16 ("00"+ o[k]).substr((""+ o[k]).length));17 return format;18 }19 alert(new Date().format("yyyy-MM-dd hh:mm:ss"));
1 /* 2 1、< 60s, 显示为“刚刚” 3 2、>= 1min && < 60 min, 显示与当前时间差“XX分钟前” 4 3、>= 60min && < 1day, 显示与当前时间差“今天 XX:XX” 5 4、>= 1day && < 1year, 显示日期“XX月XX日 XX:XX” 6 5、>= 1year, 显示具体日期“XXXX年XX月XX日 XX:XX” 7 */ 8 function timeFormat(time){ 9 var date = new Date(time)10 , curDate = new Date()11 , year = date.getFullYear()12 , month = date.getMonth() + 113 , day = date.getDate()14 , hour = date.getHours()15 , minute = date.getMinutes()16 , curYear = curDate.getFullYear()17 , curHour = curDate.getHours()18 , timeStr;19 20 if(year < curYear){21 timeStr = year +'年'+ month +'月'+ day +'日 '+ hour +':'+ minute;22 }else{23 var pastTime = curDate - date24 , pastH = pastTime/3600000;25 26 if(pastH > curHour){27 timeStr = month +'月'+ day +'日 '+ hour +':'+ minute;28 }else if(pastH >= 1){29 timeStr = '今天 ' + hour +':'+ minute +'分';30 }else{31 var pastM = curDate.getMinutes() - minute;32 if(pastM > 1){33 timeStr = pastM +'分钟前';34 }else{35 timeStr = '刚刚';36 }37 }38 }39 return timeStr;40 }
1 // 针对火狐不支持offsetX/Y 2 function getOffset(e){ 3 var target = e.target, // 当前触发的目标对象 4 eventCoord, 5 pageCoord, 6 offsetCoord; 7 8 // 计算当前触发元素到文档的距离 9 pageCoord = getPageCoord(target);10 11 // 计算光标到文档的距离12 eventCoord = {13 X : window.pageXOffset + e.clientX,14 Y : window.pageYOffset + e.clientY15 };16 17 // 相减获取光标到第一个定位的父元素的坐标18 offsetCoord = {19 X : eventCoord.X - pageCoord.X,20 Y : eventCoord.Y - pageCoord.Y21 };22 return offsetCoord;23 }24 25 function getPageCoord(element){26 var coord = { X : 0, Y : 0 };27 // 计算从当前触发元素到根节点为止,28 // 各级 offsetParent 元素的 offsetLeft 或 offsetTop 值之和29 while (element){30 coord.X += element.offsetLeft;31 coord.Y += element.offsetTop;32 element = element.offsetParent;33 }34 return coord;35 }
1 //正整数 2 /^[0-9]*[1-9][0-9]*$/; 3 //负整数 4 /^-[0-9]*[1-9][0-9]*$/; 5 //正浮点数 6 /^(([0-9]+\.[0-9]*[1-9][0-9]*)|([0-9]*[1-9][0-9]*\.[0-9]+)|([0-9]*[1-9][0-9]*))$/; 7 //负浮点数 8 /^(-(([0-9]+\.[0-9]*[1-9][0-9]*)|([0-9]*[1-9][0-9]*\.[0-9]+)|([0-9]*[1-9][0-9]*)))$/; 9 //浮点数10 /^(-?\d+)(\.\d+)?$/;11 //email地址12 /^[\w-]+(\.[\w-]+)*@[\w-]+(\.[\w-]+)+$/;13 //url地址14 /^[a-zA-z]+://(\w+(-\w+)*)(\.(\w+(-\w+)*))*(\?\S*)?$/;15 //年/月/日(年-月-日、年.月.日)16 /^(19|20)\d\d[- /.](0[1-9]|1[012])[- /.](0[1-9]|[12][0-9]|3[01])$/;17 //匹配中文字符18 /[\u4e00-\u9fa5]/;19 //匹配账号是否合法(字母开头,允许5-10字节,允许字母数字下划线)20 /^[a-zA-Z][a-zA-Z0-9_]{4,9}$/;21 //匹配空白行的正则表达式22 /\n\s*\r/;23 //匹配中国邮政编码24 /[1-9]\d{5}(?!\d)/;25 //匹配身份证26 /\d{15}|\d{18}/;27 //匹配国内电话号码28 /(\d{3}-|\d{4}-)?(\d{8}|\d{7})?/;29 //匹配IP地址30 /((2[0-4]\d|25[0-5]|[01]?\d\d?)\.){3}(2[0-4]\d|25[0-5]|[01]?\d\d?)/;31 //匹配首尾空白字符的正则表达式32 /^\s*|\s*$/;33 //匹配HTML标记的正则表达式34 < (\S*?)[^>]*>.*?|< .*? />;
1 function backTop(btnId) { 2 var btn = document.getElementById(btnId); 3 var d = document.documentElement; 4 var b = document.body; 5 window.onscroll = set; 6 btn.style.display = "none"; 7 btn.onclick = function() { 8 btn.style.display = "none"; 9 window.onscroll = null;10 this.timer = setInterval(function() {11 d.scrollTop -= Math.ceil((d.scrollTop + b.scrollTop) * 0.1);12 b.scrollTop -= Math.ceil((d.scrollTop + b.scrollTop) * 0.1);13 if ((d.scrollTop + b.scrollTop) == 0) clearInterval(btn.timer, window.onscroll = set);14 },15 10);16 };17 function set() {18 btn.style.display = (d.scrollTop + b.scrollTop > 100) ? 'block': "none"19 }20 };21 backTop('goTop');
1 // 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"] 2 function get_get(){ 3 querystr = window.location.href.split("?") 4 if(querystr[1]){ 5 GETs = querystr[1].split("&") 6 GET =new Array() 7 for(i=0;i<GETs.length;i++){ 8 tmp_arr = GETs[i].split("=") 9 key=tmp_arr[0]10 GET[key] = tmp_arr[1]11 }12 }13 return querystr[1];14 }
1 function openWindow(url,windowName,width,height){ 2 var x = parseInt(screen.width / 2.0) - (width / 2.0); 3 var y = parseInt(screen.height / 2.0) - (height / 2.0); 4 var isMSIE= (navigator.appName == "Microsoft Internet Explorer"); 5 if (isMSIE) { 6 var p = "resizable=1,location=no,scrollbars=no,width="; 7 p = p+width; 8 p = p+",height="; 9 p = p+height;10 p = p+",left=";11 p = p+x;12 p = p+",top=";13 p = p+y;14 retval = window.open(url, windowName, p);15 } else {16 var win = window.open(url, "ZyiisPopup", "top=" + y + ",left=" + x + ",scrollbars=" + scrollbars + ",dialog=yes,modal=yes,width=" + width + ",height=" + height + ",resizable=no" );17 eval("try { win.resizeTo(width, height); } catch(e) { }");18 win.focus();19 }20 }
1 function isValidLength(chars, len) {2 if (chars.length < len) {3 return false;4 }5 return true;6 }
1 var aa = document.documentElement.outerHTML.match(/(url\(|src=|href=)[\"\']*([^\"\'\(\)\<\>\[\] ]+)[\"\'\)]*|(http:\/\/[\w\-\.]+[^\"\'\(\)\<\>\[\] ]+)/ig).join("\r\n").replace(/^(src=|href=|url\()[\"\']*|[\"\'\>\) ]*$/igm,"");2 alert(aa)
1 Array.prototype.unique=function(){2 return this.reverse().join(",").match(/([^,]+)(?!.*\1)/ig).reverse();3 }
1 function SetSort(){2 var text=K1.value.split(/[\r\n]/).sort().join("\r\n");//顺序3 var test=K1.value.split(/[\r\n]/).sort().reverse().join("\r\n");//反序4 K1.value=K1.value!=text?text:test;5 }
1 function IsReverse(text){2 return text.split('').reverse().join('');3 }
1 function clear_script(){2 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,"");3 }
1 function transform(tranvalue) { 2 try { 3 var i = 1; 4 var dw2 = new Array("", "万", "亿"); //大单位 5 var dw1 = new Array("拾", "佰", "仟"); //小单位 6 var dw = new Array("零", "壹", "贰", "叁", "肆", "伍", "陆", "柒", "捌", "玖"); //整数部分用 7 //以下是小写转换成大写显示在合计大写的文本框中 8 //分离整数与小数 9 var source = splits(tranvalue);10 var num = source[0];11 var dig = source[1];12 //转换整数部分13 var k1 = 0; //计小单位14 var k2 = 0; //计大单位15 var sum = 0;16 var str = "";17 var len = source[0].length; //整数的长度18 for (i = 1; i <= len; i++) {19 var n = source[0].charAt(len - i); //取得某个位数上的数字20 var bn = 0;21 if (len - i - 1 >= 0) {22 bn = source[0].charAt(len - i - 1); //取得某个位数前一位上的数字23 }24 sum = sum + Number(n);25 if (sum != 0) {26 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27 if (n == '0') sum = 0;28 }29 if (len - i - 1 >= 0) { //在数字范围内30 if (k1 != 3) { //加小单位31 if (bn != 0) {32 str = dw1[k1].concat(str);33 }34 k1++;35 } else { //不加小单位,加大单位36 k1 = 0;37 var temp = str.charAt(0);38 if (temp == "万" || temp == "亿") //若大单位前没有数字则舍去大单位39 str = str.substr(1, str.length - 1);40 str = dw2[k2].concat(str);41 sum = 0;42 }43 }44 if (k1 == 3) //小单位到千则大单位进一45 {46 k2++;47 }48 }49 //转换小数部分50 var strdig = "";51 if (dig != "") {52 var n = dig.charAt(0);53 if (n != 0) {54 strdig += dw[Number(n)] + "角"; //加数字55 }56 var n = dig.charAt(1);57 if (n != 0) {58 strdig += dw[Number(n)] + "分"; //加数字59 }60 }61 str += "元" + strdig;62 } catch(e) {63 return "0元";64 }65 return str;66 }67 //拆分整数与小数68 function splits(tranvalue) {69 var value = new Array('', '');70 temp = tranvalue.split(".");71 for (var i = 0; i < temp.length; i++) {72 value[i] = temp[i];73 }74 return value;75 }
1 匹配中文字符的正则表达式: [\u4e00-\u9fa5] 2 匹配双字节字符(包括汉字在内):[^\x00-\xff] 3 匹配空行的正则表达式:\n[\s| ]*\r 4 匹配 HTML 标记的正则表达式:<(.*)>.*<\/\1>|<(.*) \/> 5 匹配首尾空格的正则表达式:(^\s*)|(\s*$) 6 匹配 IP 地址的正则表达式:/(\d+)\.(\d+)\.(\d+)\.(\d+)/g 7 匹配 Email 地址的正则表达式:\w+([-+.]\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)* 8 匹配网址 URL 的正则表达式:http://(/[\w-]+\.)+[\w-]+(/[\w- ./?%&=]*)? 9 sql 语句:^(select|drop|delete|create|update|insert).*$ 10 非负整数:^\d+$ 11 正整数:^[0-9]*[1-9][0-9]*$ 12 非正整数:^((-\d+)|(0+))$ 13 负整数:^-[0-9]*[1-9][0-9]*$ 14 整数:^-?\d+$ 15 非负浮点数:^\d+(\.\d+)?$ 16 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]*))$ 17 非正浮点数:^((-\d+\.\d+)?)|(0+(\.0+)?))$ 18 英文字符串:^[A-Za-z]+$ 19 英文大写串:^[A-Z]+$ 20 英文小写串:^[a-z]+$ 21 英文字符数字串:^[A-Za-z0-9]+$ 22 英数字加下划线串:^\w+$ 23 E-mail地址:^[\w-]+(\.[\w-]+)*@[\w-]+(\.[\w-]+)+$ 24 URL:^[a-zA-Z]+://(\w+(-\w+)*)(\.(\w+(-\w+)*))*(\?\s*)?$ 或:^http:\/\/[A-Za-z0-9]+\.[A-Za-z0-9]+[\/=\?%\-&_~`@[\]\':+!]*([^<>\"\"])*$ 25 邮政编码:^[1-9]\d{5}$ 26 电话号码:^((\(\d{2,3}\))|(\d{3}\-))?(\(0\d{2,3}\)|0\d{2,3}-)?[1-9]\d{6,7}(\-\d{1,4})?$ 27 手机号码:^((\(\d{2,3}\))|(\d{3}\-))?13\d{9}$ 28 双字节字符(包括汉字在内):^\x00-\xff 29 匹配首尾空格:(^\s*)|(\s*$)30 匹配 HTML 标记:<(.*)>.*<\/\1>|<(.*) \/> 31 匹配空行:\n[\s| ]*\r 32 提取信息中的网络链接:(h|H)(r|R)(e|E)(f|F) *= *('|")?(\w|\\|\/|\.)+('|"| *|>)? 33 提取信息中的邮件地址:\w+([-+.]\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)* 34 提取信息中的图片链接:(s|S)(r|R)(c|C) *= *('|")?(\w|\\|\/|\.)+('|"| *|>)? 35 提取信息中的 IP 地址:(\d+)\.(\d+)\.(\d+)\.(\d+) 36 提取信息中的中国手机号码:(86)*0*13\d{9} 37 提取信息中的中国固定电话号码:(\(\d{3,4}\)|\d{3,4}-|\s)?\d{8} 38 提取信息中的中国电话号码(包括移动和固定电话):(\(\d{3,4}\)|\d{3,4}-|\s)?\d{7,14} 39 提取信息中的中国邮政编码:[1-9]{1}(\d+){5} 40 提取信息中的浮点数(即小数):(-?\d*)\.?\d+ 41 提取信息中的任何数字 :(-?\d*)(\.\d+)? 42 IP:(\d+)\.(\d+)\.(\d+)\.(\d+) 43 电话区号:^0\d{2,3}$44 腾讯 QQ 号:^[1-9]*[1-9][0-9]*$ 45 账号(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}$ 46 中文、英文、数字及下划线:^[\u4e00-\u9fa5_a-zA-Z0-9]+$
1 (function(){ 2 var fn = function(){ 3 var w = document.documentElement ? document.documentElement.clientWidth : document.body.clientWidth 4 ,r = 1255 5 ,b = Element.extend(document.body) 6 ,classname = b.className; 7 if(w < r){ 8 //当窗体的宽度小于1255的时候执行相应的操作 9 }else{10 //当窗体的宽度大于1255的时候执行相应的操作11 }12 }13 if(window.addEventListener){14 window.addEventListener('resize', function(){ fn(); });15 }else if(window.attachEvent){16 window.attachEvent('onresize', function(){ fn(); });17 }18 fn();19 })(); 92、原生JavaScript用正则清除空格分左右 1 function ltrim(s){ return s.replace( /^(\s*| *)/, ""); } 2 function rtrim(s){ return s.replace( /(\s*| *)$/, ""); } 3 function trim(s){ return ltrim(rtrim(s));} 93、原生JavaScript判断变量是否空值 1 /** 2 * 判断变量是否空值 3 * undefined, null, '', false, 0, [], {} 均返回true,否则返回false 4 */ 5 function empty(v){ 6 switch (typeof v){ 7 case 'undefined' : return true; 8 case 'string' : if(trim(v).length == 0) return true; break; 9 case 'boolean' : if(!v) return true; break;10 case 'number' : if(0 === v) return true; break;11 case 'object' : 12 if(null === v) return true;13 if(undefined !== v.length && v.length==0) return true;14 for(var k in v){return false;} return true;15 break;16 }17 return false;18 } 94、原生JavaScript实现base64解码 1 function base64_decode(data){ 2 var b64 = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/="; 3 var o1, o2, o3, h1, h2, h3, h4, bits, i = 0,ac = 0,dec = "",tmp_arr = []; 4 if (!data) { return data; } 5 data += ''; 6 do { 7 h1 = b64.indexOf(data.charAt(i++)); 8 h2 = b64.indexOf(data.charAt(i++)); 9 h3 = b64.indexOf(data.charAt(i++));10 h4 = b64.indexOf(data.charAt(i++));11 bits = h1 << 18 | h2 << 12 | h3 << 6 | h4;12 o1 = bits >> 16 & 0xff;13 o2 = bits >> 8 & 0xff;14 o3 = bits & 0xff;15 if (h3 == 64) {16 tmp_arr[ac++] = String.fromCharCode(o1);17 } else if (h4 == 64) {18 tmp_arr[ac++] = String.fromCharCode(o1, o2);19 } else {20 tmp_arr[ac++] = String.fromCharCode(o1, o2, o3);21 }22 } while (i < data.length);23 dec = tmp_arr.join('');24 dec = utf8_decode(dec);25 return dec;26 } 95、原生JavaScript实现utf8解码 1 function utf8_decode(str_data){ 2 var tmp_arr = [],i = 0,ac = 0,c1 = 0,c2 = 0,c3 = 0;str_data += ''; 3 while (i < str_data.length) { 4 c1 = str_data.charCodeAt(i); 5 if (c1 < 128) { 6 tmp_arr[ac++] = String.fromCharCode(c1); 7 i++; 8 } else if (c1 > 191 && c1 < 224) { 9 c2 = str_data.charCodeAt(i + 1);10 tmp_arr[ac++] = String.fromCharCode(((c1 & 31) << 6) | (c2 & 63));11 i += 2;12 } else {13 c2 = str_data.charCodeAt(i + 1);14 c3 = str_data.charCodeAt(i + 2);15 tmp_arr[ac++] = String.fromCharCode(((c1 & 15) << 12) | ((c2 & 63) << 6) | (c3 & 63));16 i += 3;17 }18 } 19 return tmp_arr.join('');20 } 96、原生JavaScript获取窗体可见范围的宽与高 97、原生JavaScript判断IE版本号(既简洁、又向后兼容!) 98、原生JavaScript获取浏览器版本号 1 function browserVersion(types) { 2 var other = 1; 3 for (i in types) { 4 var v = types[i] ? types[i] : i; 5 if (USERAGENT.indexOf(v) != -1) { 6 var re = new RegExp(v + '(\\/|\\s|:)([\\d\\.]+)', 'ig'); 7 var matches = re.exec(USERAGENT); 8 var ver = matches != null ? matches[2] : 0; 9 other = ver !== 0 && v != 'mozilla' ? 0 : other;10 } else {11 var ver = 0;12 }13 eval('BROWSER.' + i + '= ver');14 }15 BROWSER.other = other;16 } 99、原生JavaScript半角转换为全角函数 1 function ToDBC(str){ 2 var result = ''; 3 for(var i=0; i < str.length; i++){ 4 code = str.charCodeAt(i); 5 if(code >= 33 && code <= 126){ 6 result += String.fromCharCode(str.charCodeAt(i) + 65248); 7 }else if (code == 32){ 8 result += String.fromCharCode(str.charCodeAt(i) + 12288 - 32); 9 }else{10 result += str.charAt(i);11 }12 }13 return result;14 } 100、原生JavaScript全角转换为半角函数 1 function ToCDB(str){ 2 var result = ''; 3 for(var i=0; i < str.length; i++){ 4 code = str.charCodeAt(i); 5 if(code >= 65281 && code <= 65374){ 6 result += String.fromCharCode(str.charCodeAt(i) - 65248); 7 }else if (code == 12288){ 8 result += String.fromCharCode(str.charCodeAt(i) - 12288 + 32); 9 }else{10 result += str.charAt(i);11 }12 }13 return result;14 } |
|
来自: 绚爷好人图书馆 > 《作死的 jacascript》