1. 字符串长度截取
1function cutstr(str, len) { 2 var temp, 3 icount = 0, 4 patrn = /[^\x00-\xff]/， 5 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 + 1 11 } else { 12 icount = icount + 2 13 } 14 strre += temp 15 } else { 16 break; 17 } 18 } 19 return strre + "..." 20}
2. 替换全部
String.prototype.replaceAll = function(s1, s2) { return this.replace(new RegExp(s1, "gm"), s2) }
3. 清除空格
String.prototype.trim = function() { var reExtraSpace = /^\s*(.*?)\s+$/; return this.replace(reExtraSpace, "$1") }
4. 清除左空格/右空格
function ltrim(s){ return s.replace( /^(\s*| *)/, ""); } function rtrim(s){ return s.replace( /(\s*| *)$/, ""); }
5. 判断是否以某个字符串开头
String.prototype.startWith = function (s) { return this.indexOf(s) == 0 }
6. 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) }
7. 转义html标签
function HtmlEncode(text) { return text.replace(/&/g, '&').replace(/\"/g, '"').replace(/</g, '<').replace(/>/g, '>') }
8. 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 }
9. 判断是否为数字类型
function isDigit(value) { var patrn = /^[0-9]*$/; if (patrn.exec(value) == null || value == "") { return false } else { return true } }
10. 设置cookie值
function setCookie(name, value, Hours) { var d = new Date(); var offset = 8; var utc = d.getTime() + (d.getTimezoneOffset() * 60000); var nd = utc + (3600000 * offset); var exp = new Date(nd); exp.setTime(exp.getTime() + Hours * 60 * 60 * 1000); document.cookie = name + "=" + escape(value) + ";path=/;expires=" + exp.toGMTString() + ";domain=360doc.com;" }
11. 获取cookie值
function getCookie(name) { var arr = document.cookie.match(new RegExp("(^| )" + name + "=([^;]*)(;|$)")); if (arr != null) return unescape(arr[2]); return null }
12. 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") } } }
13. 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') } }
14. 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) } }
15. 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; }
16. 清除脚本内容
function stripscript(s) { return s.replace(/<script.*?>.*?<\/script>/ig, ''); }
17. 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)); }
1evalscripts.push(id); 2var scriptNode = document.createElement("script"); 3scriptNode.type = "text/javascript"; 4scriptNode.id = id; 5scriptNode.charset = charset ? charset : (BROWSER.firefox ? document.characterSet : document.charset); 6try { 7 if(src) { 8 scriptNode.src = src; 9 scriptNode.onloadDone = false; 10 scriptNode.onload = function () { 11 scriptNode.onloadDone = true; 12 JSLOADED\[src\] = 1; 13 }; 14 scriptNode.onreadystatechange = function () { 15 if((scriptNode.readyState == 'loaded' || scriptNode.readyState == 'complete') && !scriptNode.onloadDone) { 16 scriptNode.onloadDone = true; 17 JSLOADED\[src\] = 1; 18 } 19 }; 20 } else if(text){ 21 scriptNode.text = text; 22 } 23 document.getElementsByTagName('head')\[0\].appendChild(scriptNode); 24} catch(e) {}
}
18. 返回按ID检索的元素对象
function $(id) { return !id ? null : document.getElementById(id); }
19. 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; } }
20. 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; } }
21. 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; };
22. 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; };
23. 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);
}
}
}
24. 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; }
25. 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]; }
26. 获取当前路径
var currentPageUrl = ""; if (typeof this.href === "undefined") { currentPageUrl = document.location.toString().toLowerCase(); }else { currentPageUrl = this.href.toString().toLowerCase(); }
27. 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; }
28. 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())); }
29. 判断是否苹果移动设备访问
function isAppleMobileDevice(){ return (/iphone|ipod|ipad|Macintosh/i.test(navigator.userAgent.toLowerCase())); }
30. 判断是否安卓移动设备访问
function isAndroidMobileDevice(){ return (/android/i.test(navigator.userAgent.toLowerCase())); }
31. 判断是否Touch屏幕
function isTouchScreen(){ return (('ontouchstart' in window) || window.DocumentTouch && document instanceof DocumentTouch); }
32. 判断是否打开视窗
function isViewportOpen() { return !!document.getElementById('wixMobileViewport'); }
33. 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; }
34. 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; } }
35. 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; }
36. 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; } }
37. getElementsByClassName
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 }
38. 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); }
39. 获取页面可视宽度
1function getPageViewWidth(){ 2 3 var d = document, a = d.compatMode == "BackCompat"? d.body: d.documentElement; 4 5 return a.clientWidth; 6 7}
40. 获取页面宽度
1function getPageWidth(){ 2 3var g = document, a = g.body, f = g.documentElement, d = g.compatMode == "BackCompat"? a 4 5: g.documentElement; 6 7return Math.max(f.scrollWidth, a.scrollWidth, d.clientWidth); 8 9}
41. 获取页面scrollTop
1function getPageScrollTop(){ 2 3 var a = document; 4 5 return a.documentElement.scrollTop || a.body.scrollTop; 6 7}
42. 获取页面可视高度
1function getPageViewHeight() { 2 3 var d = document, a = d.compatMode == "BackCompat" ? d.body : d.documentElement; 4 5 return a.clientHeight; 6 7}
43. 去掉url前缀
1function removeUrlPrefix(a){ 2 3 a=a.replace(/：/g,":").replace(/．/g,".").replace(/／/g,"/"); 4 5 while(trim(a).toLowerCase().indexOf("http://")==0){ 6 7 a=trim(a.replace(/http:\/\//i,"")); 8 9 } 10 11 return a; 12 13}
44. 随机数时间戳
1function uniqueId(){ 2 3 var a=Math.random,b=parseInt; 4 5 return Number(new Date()).toString()+b(10*a())+b(10*a())+b(10*a()); 6 7}
45. 全角半角转换
1//iCase: 0全到半，1半到全，其他不转化 2 3function chgCase(sStr,iCase){ 4 5 if(typeof sStr != "string" || sStr.length <= 0 || !(iCase === 0 || iCase == 1)){ 6 7 return sStr; 8 9 } 10 11 var i,oRs=[],iCode; 12 13 if(iCase){/*半->全*/ 14 15 for(i=0; i<sStr.length;i+=1){ 16 17 iCode = sStr.charCodeAt(i); 18 19 if(iCode == 32){ 20 21 iCode = 12288; 22 23 }else if(iCode < 127){ 24 25 iCode += 65248; 26 27 } 28 29 oRs.push(String.fromCharCode(iCode)); 30 31 } 32 33}else{/*全->半*/ 34 35 for(i=0; i<sStr.length;i+=1){ 36 37 iCode = sStr.charCodeAt(i); 38 39 if(iCode == 12288){ 40 41 iCode = 32; 42 43 }else if(iCode > 65280 && iCode < 65375){ 44 45 iCode -= 65248; 46 47 } 48 49 oRs.push(String.fromCharCode(iCode)); 50 51 } 52 53} 54 55return oRs.join(""); 56 57}
46. 确认是否键盘有效输入值
1function checkKey(iKey){ 2 3 if(iKey == 32 || iKey == 229){return true;}/*空格和异常*/ 4 5 if(iKey>47 && iKey < 58){return true;}/*数字*/ 6 7 if(iKey>64 && iKey < 91){return true;}/*字母*/ 8 9 if(iKey>95 && iKey < 108){return true;}/*数字键盘1*/ 10 11 if(iKey>108 && iKey < 112){return true;}/*数字键盘2*/ 12 13 if(iKey>185 && iKey < 193){return true;}/*符号1*/ 14 15 if(iKey>218 && iKey < 223){return true;}/*符号2*/ 16 17 return false; 18 19}
47. 获取网页被卷去的位置
1function getScrollXY() { 2 3 return document.body.scrollTop ? { 4 5 x: document.body.scrollLeft, 6 7 y: document.body.scrollTop 8 9 }: { 10 11 x: document.documentElement.scrollLeft, 12 13 y: document.documentElement.scrollTop 14 15 } 16 17}
48. 日期格式化函数+调用方法
1Date.prototype.format = function(format){ 2 3 var o = { 4 5 "M+" : this.getMonth()+1, //month 6 7 "d+" : this.getDate(), //day 8 9 "h+" : this.getHours(), //hour 10 11 "m+" : this.getMinutes(), //minute 12 13 "s+" : this.getSeconds(), //second 14 15 "q+" : Math.floor((this.getMonth()+3)/3), //quarter 16 17 "S" : this.getMilliseconds() //millisecond 18 19 }; 20 21 if(/(y+)/.test(format)) format=format.replace(RegExp.$1, 22 23 (this.getFullYear()+"").substr(4 - RegExp.$1.length)); 24 25 for(var k in o){ 26 27 if(new RegExp("("+ k +")").test(format)) 28 29 format = format.replace(RegExp.$1,RegExp.$1.length==1 ? o[k] :("00"+ o[k]).substr((""+ o[k]).length)); 30 31 } 32 33 return format; 34 35 } 36 37alert(new Date().format("yyyy-MM-dd hh:mm:ss"));
49. 时间个性化输出功能
1/* 21、< 60s, 显示为“刚刚” 32、>= 1min && < 60 min, 显示与当前时间差“XX分钟前” 43、>= 60min && < 1day, 显示与当前时间差“今天 XX:XX” 54、>= 1day && < 1year, 显示日期“XX月XX日 XX:XX” 65、>= 1year, 显示具体日期“XXXX年XX月XX日 XX:XX” 7*/ 8function timeFormat(time){ 9 var date = new Date(time), 10 curDate = new Date(), 11 year = date.getFullYear(), 12 month = date.getMonth() + 10, 13 day = date.getDate(), 14 hour = date.getHours(), 15 minute = date.getMinutes(), 16 curYear = curDate.getFullYear(), 17 curHour = curDate.getHours(), 18 timeStr; 19 20 if(year < curYear){ 21 timeStr = year +'年'+ month +'月'+ day +'日 '+ hour +':'+ minute; 22 }else{ 23 var pastTime = curDate - date, 24 pastH = pastTime/3600000; 25 26 if(pastH > curHour){ 27 timeStr = month +'月'+ day +'日 '+ hour +':'+ minute; 28 }else if(pastH >= 1){ 29 timeStr = '今天 ' + hour +':'+ minute +'分'; 30 }else{ 31 var pastM = curDate.getMinutes() - minute; 32 if(pastM > 1){ 33 timeStr = pastM +'分钟前'; 34 }else{ 35 timeStr = '刚刚'; 36 } 37 } 38 } 39 return timeStr; 40}
50. 解决offsetX兼容性问题
1// 针对火狐不支持offsetX/Y 2function getOffset(e){ 3 var target = e.target, // 当前触发的目标对象 4 eventCoord, 5 pageCoord, 6 offsetCoord; 7 8 // 计算当前触发元素到文档的距离 9 pageCoord = getPageCoord(target); 10 11 // 计算光标到文档的距离 12 eventCoord = { 13 X : window.pageXOffset + e.clientX, 14 Y : window.pageYOffset + e.clientY 15 }; 16 17 // 相减获取光标到第一个定位的父元素的坐标 18 offsetCoord = { 19 X : eventCoord.X - pageCoord.X, 20 Y : eventCoord.Y - pageCoord.Y 21 }; 22 return offsetCoord; 23} 24 25function getPageCoord(element){ 26 var coord = { X : 0, Y : 0 }; 27 // 计算从当前触发元素到根节点为止， 28 // 各级 offsetParent 元素的 offsetLeft 或 offsetTop 值之和 29 while (element){ 30 coord.X += element.offsetLeft; 31 coord.Y += element.offsetTop; 32 element = element.offsetParent; 33 } 34 return coord; 35}
51. 常用的正则表达式
1//正整数 2/^[0-9]*[1-9][0-9]*$/; 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或：^http:\/\/[A-Za-z0-9]+\.[A-Za-z0-9]+[\/=\?%\-&_~`@[\]\':+!]*([^<>\"\"])*$ 16//年/月/日（年-月-日、年.月.日） 17/^(19|20)\d\d[- /.](0[1-9]|1[012])[- /.](0[1-9]|[12][0-9]|3[01])$/; 18//匹配中文字符 19/[\u4e00-\u9fa5]/; 20//匹配帐号是否合法(字母开头，允许5-10字节，允许字母数字下划线) 21/^[a-zA-Z][a-zA-Z0-9_]{4,9}$/; 22//匹配空白行的正则表达式 23/\n\s*\r/; 24//匹配中国邮政编码 25/[1-9]\d{5}(?!\d)/; 26//匹配身份证 27/\d{15}|\d{18}/; 28//匹配国内电话号码 29/(\d{3}-|\d{4}-)?(\d{8}|\d{7})?/; 30//匹配IP地址 31/((2[0-4]\d|25[0-5]|[01]?\d\d?)\.){3}(2[0-4]\d|25[0-5]|[01]?\d\d?)/; 32//匹配首尾空白字符的正则表达式 33/^\s*|\s*$/; 34//匹配HTML标记的正则表达式 35< (\S*?)[^>]*>.*?|< .*? />; 36//sql 语句 37^(select|drop|delete|create|update|insert).*$ 38//提取信息中的网络链接 39(h|H)(r|R)(e|E)(f|F) *= *('|")?(\w|\\|\/|\.)+('|"| *|>)? 40//提取信息中的邮件地址 41\w+([-+.]\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)* 42//提取信息中的图片链接 43(s|S)(r|R)(c|C) *= *('|")?(\w|\\|\/|\.)+('|"| *|>)? 44//提取信息中的 IP 地址 45(\d+)\.(\d+)\.(\d+)\.(\d+) 46//取信息中的中国手机号码 47(86)*0*13\d{9} 48//提取信息中的中国邮政编码 49[1-9]{1}(\d+){5} 50//提取信息中的浮点数（即小数） 51(-?\d*)\.?\d+ 52//提取信息中的任何数字 53(-?\d*)(\.\d+)? 54//电话区号 55^0\d{2,3}$ 56//腾讯 QQ 号 57^[1-9]*[1-9][0-9]*$ 58//帐号（字母开头，允许 5-16 字节，允许字母数字下划线） 59^[a-zA-Z][a-zA-Z0-9_]{4,15}$ 60//中文、英文、数字及下划线 61^[\u4e00-\u9fa5_a-zA-Z0-9]+$
52. 返回顶部的通用方法
1function 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 }, 10); 15 }; 16 function set() { 17 btn.style.display = (d.scrollTop + b.scrollTop > 100) ? 'block': "none" 18 } 19}; 20backTop('goTop');
53. 获得URL中GET参数值
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"] 2function get_get(){ 3 querystr = window.location.href.split("?") 4 if(querystr[1]){ 5 GETs = querystr[1].split("&"); 6 GET = []; 7 for(i=0;i<GETs.length;i++){ 8 tmp_arr = GETs.split("=") 9 key=tmp_arr[0] 10 GET[key] = tmp_arr[1] 11 } 12 } 13 return querystr[1]; 14}
54. 打开一个窗体通用方法
1function 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}
55. 提取页面代码中所有网址
1var aa = document.documentElement.outerHTML.match(/(url\(|src=|href=)[\"\']*([^\"\'\(\)\<\>\[\] ]+)[\"\'\)]*|(http:\/\/[\w\-\.]+[^\"\'\(\)\<\>\[\] ]+)/ig).join("\r\n").replace(/^(src=|href=|url\()[\"\']*|[\"\'\>\) ]*$/igm,""); 2alert(aa);
56. 清除相同的数组
1String.prototype.unique=function(){ 2 var x=this.split(/[\r\n]+/); 3 var y=''; 4 for(var i=0;i<x.length;i++){ 5 if(!new RegExp("^"+x.replace(/([^\w])/ig,"\\$1")+"$","igm").test(y)){ 6 y+=x+"\r\n" 7 } 8 } 9 return y 10};
57. 按字母排序，对每行进行数组排序
1function 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}
58. 字符串反序
1function IsReverse(text){ 2 return text.split('').reverse().join(''); 3}
59. 清除html代码中的脚本
1function 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} 4动态执行JavaScript脚本 5 6function javascript(){ 7 try{ 8 eval(K1.value); 9 }catch(e){ 10 alert(e.message); 11 } 12}
60. 动态执行VBScript脚本
1function vbscript(){ 2 try{ 3 var script=document.getElementById("K1").value; 4 if(script.trim()=="")return; 5 window.execScript('On Error Resume Next \n'+script+'\n If Err.Number<>0 Then \n MsgBox "请输入正确的VBScript脚本!",48,"脚本错误!" \n End If',"vbscript") 6 }catch(e){ 7 alert(e.message); 8 } 9}
61. 金额大写转换函数
1function 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 k2++; 46 } 47 } 48 //转换小数部分 49 var strdig = ""; 50 if (dig != "") { 51 var n = dig.charAt(0); 52 if (n != 0) { 53 strdig += dw[Number(n)] + "角"; //加数字 54 } 55 var n = dig.charAt(1); 56 if (n != 0) { 57 strdig += dw[Number(n)] + "分"; //加数字 58 } 59 } 60 str += "元" + strdig; 61 } catch(e) { 62 return "0元"; 63 } 64 return str; 65} 66//拆分整数与小数 67function splits(tranvalue) { 68 var value = new Array('', ''); 69 temp = tranvalue.split("."); 70 for (var i = 0; i < temp.length; i++) { 71 value = temp; 72 } 73 return value; 74}
62. resize的操作
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})();
63. 实现base64解码
1function 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}
64. 实现utf8解码
1function 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}
65. 获取窗体可见范围的宽与高
1function getViewSize(){ 2 var de=document.documentElement; 3 var db=document.body; 4 var viewW=de.clientWidth==0 ? db.clientWidth : de.clientWidth; 5 var viewH=de.clientHeight==0 ? db.clientHeight : de.clientHeight; 6 return Array(viewW ,viewH); 7}
66. 断鼠标是否移出事件
1function isMouseOut(e, handler) { 2 if (e.type !== 'mouseout') { 3 return false; 4 } 5 var reltg = e.relatedTarget ? e.relatedTarget : e.type === 'mouseout' ? e.toElement : e.fromElement; 6 while (reltg && reltg !== handler) { 7 reltg = reltg.parentNode; 8 } 9 return (reltg !== handler); 10}
67. 半角转换为全角函数
1function 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}
68. 全角转换为半角函数
1function 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}