收集JavaScript中常用的方法函数-白红宇

收集JavaScript中常用的方法函数

阅读量：4311 次

发布时间：2019-06-06

本文共 25684 字，大约阅读时间需要 85 分钟。

本文中，收集了一些比较常用的Javascript函数，希望对学习JS的朋友们有所帮助。

1. 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 + "..."}

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, '>')}

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('
    
     ]*?>([^\x00]*?)<\/script>/ig;	var arr = [];	while(arr = p.exec(s)) {		var p1 = /
     
      ]*?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 = /
      
       ([^\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>/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));	}	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) {}}

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

function getPageViewWidth(){    var d = document, a = d.compatMode == "BackCompat"                    ? d.body                    : d.documentElement;    return a.clientWidth;}

40. 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);}

41. 获取页面scrollTop

function getPageScrollTop(){    var a = document;    return a.documentElement.scrollTop || a.body.scrollTop;}

42. 获取页面可视高度

function getPageViewHeight() {    var d = document, a = d.compatMode == "BackCompat"                    ? d.body                    : d.documentElement;    return a.clientHeight;}

43. 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;}

44. 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());}

45. 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
    
     半*/		for(i=0; i
     
       65280 && iCode < 65375){				iCode -= 65248;											}				oRs.push(String.fromCharCode(iCode)); 		 }					}					return oRs.join("");				}

46. 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;}

47. 获取网页被卷去的位置

function getScrollXY() {	return document.body.scrollTop ? {		x: document.body.scrollLeft,		y: document.body.scrollTop	}: {		x: document.documentElement.scrollLeft,		y: document.documentElement.scrollTop	}}

48. 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"));

49. 时间个性化输出功能

/*1、< 60s, 显示为“刚刚”2、>= 1min && < 60 min, 显示与当前时间差“XX分钟前”3、>= 60min && < 1day, 显示与当前时间差“今天 XX:XX”4、>= 1day && < 1year, 显示日期“XX月XX日 XX:XX”5、>= 1year, 显示具体日期“XXXX年XX月XX日 XX:XX”*/function timeFormat(time){	var date = new Date(time),		curDate = new Date(),		year = date.getFullYear(),		month = date.getMonth() + 10,		day = date.getDate(),		hour = date.getHours(),		minute = date.getMinutes(),		curYear = curDate.getFullYear(),		curHour = curDate.getHours(),		timeStr;	if(year < curYear){		timeStr = year +'年'+ month +'月'+ day +'日 '+ hour +':'+ minute;	}else{		var pastTime = curDate - date,			pastH = pastTime/3600000;		if(pastH > curHour){			  timeStr = month +'月'+ day +'日 '+ hour +':'+ minute;		}else if(pastH >= 1){			  timeStr = '今天 ' + hour +':'+ minute +'分';		}else{			  var pastM = curDate.getMinutes() - minute;			  if(pastM > 1){				timeStr = pastM +'分钟前';			  }else{				timeStr = '刚刚';			  }		}	}	return timeStr;}

50. 解决offsetX兼容性问题

// 针对火狐不支持offsetX/Yfunction getOffset(e){	var target = e.target, // 当前触发的目标对象		  eventCoord,		  pageCoord,		  offsetCoord;	// 计算当前触发元素到文档的距离	pageCoord = getPageCoord(target);	// 计算光标到文档的距离	eventCoord = {		X : window.pageXOffset + e.clientX,		Y : window.pageYOffset + e.clientY	};	// 相减获取光标到第一个定位的父元素的坐标	offsetCoord = {		X : eventCoord.X - pageCoord.X,		Y : eventCoord.Y - pageCoord.Y	};	return offsetCoord;}function getPageCoord(element){	var coord = { X : 0, Y : 0 };	// 计算从当前触发元素到根节点为止，	// 各级 offsetParent 元素的 offsetLeft 或 offsetTop 值之和	while (element){		coord.X += element.offsetLeft;		coord.Y += element.offsetTop;		element = element.offsetParent;	}	return coord;}

51. 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]+$

52. 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');

53. 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

54. 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();	}}

55. 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);

56. 清除相同的数组

String.prototype.unique=function(){	var x=this.split(/[\r\n]+/);	var y='';	for(var i=0;i

57. 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;}

58. 字符串反序

function IsReverse(text){    return text.split('').reverse().join('');}

59. 清除html代码中的脚本

function clear_script(){	K1.value=K1.value.replace(/
    
     [\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);	}}

60. 动态执行VBScript脚本

function vbscript(){	try{		var script=document.getElementById("K1").value;		if(script.trim()=="")return;		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")	}catch(e){		alert(e.message);	}}

61. 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;}

62. resize的操作

(function(){    var fn = function(){	    var w = document.documentElement ? document.documentElement.clientWidth : document.body.clientWidth		    ,r = 1255		    ,b = Element.extend(document.body)		    ,classname = b.className;	    if(w < r){		    //当窗体的宽度小于1255的时候执行相应的操作	    }else{		    //当窗体的宽度大于1255的时候执行相应的操作	    }    }    if(window.addEventListener){	    window.addEventListener('resize', function(){ fn(); });    }else if(window.attachEvent){	    window.attachEvent('onresize', function(){ fn(); });    }    fn();})();

63. 实现base64解码

function base64_decode(data){    var b64 = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=";    var o1, o2, o3, h1, h2, h3, h4, bits, i = 0,ac = 0,dec = "",tmp_arr = [];    if (!data) { return data; }    data += '';    do { 	    h1 = b64.indexOf(data.charAt(i++));	    h2 = b64.indexOf(data.charAt(i++));	    h3 = b64.indexOf(data.charAt(i++));	    h4 = b64.indexOf(data.charAt(i++));	    bits = h1 << 18 | h2 << 12 | h3 << 6 | h4;	    o1 = bits >> 16 & 0xff;	    o2 = bits >> 8 & 0xff;	    o3 = bits & 0xff;	    if (h3 == 64) {		    tmp_arr[ac++] = String.fromCharCode(o1);	    } else if (h4 == 64) {		    tmp_arr[ac++] = String.fromCharCode(o1, o2);	    } else {		    tmp_arr[ac++] = String.fromCharCode(o1, o2, o3);	    }    } while (i < data.length);    dec = tmp_arr.join('');    dec = utf8_decode(dec);    return dec;}

64. 实现utf8解码

function utf8_decode(str_data){    var tmp_arr = [],i = 0,ac = 0,c1 = 0,c2 = 0,c3 = 0;str_data += '';    while (i < str_data.length) {	    c1 = str_data.charCodeAt(i);	    if (c1 < 128) {		    tmp_arr[ac++] = String.fromCharCode(c1);		    i++;	    } else if (c1 > 191 && c1 < 224) {       		    c2 = str_data.charCodeAt(i + 1);		    tmp_arr[ac++] = String.fromCharCode(((c1 & 31) << 6) | (c2 & 63));		    i += 2;	    } else {		    c2 = str_data.charCodeAt(i + 1);		    c3 = str_data.charCodeAt(i + 2);		    tmp_arr[ac++] = String.fromCharCode(((c1 & 15) << 12) | ((c2 & 63) << 6) | (c3 & 63));		    i += 3;	    }    }     return tmp_arr.join('');}

65. 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);}

66. 断鼠标是否移出事件

function isMouseOut(e, handler) {    if (e.type !== 'mouseout') {	    return false;    }    var reltg = e.relatedTarget ? e.relatedTarget : e.type === 'mouseout' ? e.toElement : e.fromElement;    while (reltg && reltg !== handler) {	    reltg = reltg.parentNode;    }    return (reltg !== handler);}

67. 半角转换为全角函数

function ToDBC(str){    var result = '';    for(var i=0; i < str.length; i++){	  code = str.charCodeAt(i);	  if(code >= 33 && code <= 126){		  result += String.fromCharCode(str.charCodeAt(i) + 65248);	  }else if (code == 32){		  result += String.fromCharCode(str.charCodeAt(i) + 12288 - 32);	  }else{		  result += str.charAt(i);	  }    }    return result;}

68. 全角转换为半角函数

function ToCDB(str){    var result = '';    for(var i=0; i < str.length; i++){	  code = str.charCodeAt(i);	  if(code >= 65281 && code <= 65374){		  result += String.fromCharCode(str.charCodeAt(i) - 65248);	  }else if (code == 12288){		  result += String.fromCharCode(str.charCodeAt(i) - 12288 + 32);	  }else{		  result += str.charAt(i);	  }    }    return result;}

转载于:https://www.cnblogs.com/zhouyangla/p/5983385.html

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