分享我常用的一些JS验证和函数

下面是我常用一些JS验证和函数,有一些验证我直接写到了对象的属性里面了,可以直接通过对象.方法来调用
//浮点数除法运算 function fdiv(a, b, n) { if (n == undefined) { n = 2; } var t1 = 0, t2 = 0, r1, r2; try { t1 = a.toString().split(".")[1].length } catch (e) { } try { t2 = b.toString().split(".")[1].length } catch (e) { } with (Math) { r1 = Number(a.toString().replace(".", "")); r2 = Number(b.toString().replace(".", "")); return ((r1 / r2) * pow(10, t2 - t1)).toFixed(n); } } //浮点数乘法运算 function fmul(a, b, n) { if (n == undefined) { n = 2; } var m = 0, s1 = a.toString(), s2 = b.toString(); try { m += s1.split(".")[1].length } catch (e) { } try { m += s2.split(".")[1].length } catch (e) { } return (Number(s1.replace(".", "")) * Number(s2.replace(".", "")) / Math.pow(10, m)).toFixed(n); } //浮点数加法运算 function fadd(a, b, n) { if (n == undefined) { n = 2; } var r1, r2, m; try { r1 = a.toString().split(".")[1].length } catch (e) { r1 = 0 } try { r2 = b.toString().split(".")[1].length } catch (e) { r2 = 0 } m = Math.pow(10, Math.max(r1, r2)) return ((a * m + b * m) / m).toFixed(n); } //浮点数减法运算 function fsub(a, b, n) { if (n == undefined) { n = 2; } var r1, r2, m; try { r1 = a.toString().split(".")[1].length } catch (e) { r1 = 0 } try { r2 = b.toString().split(".")[1].length } catch (e) { r2 = 0 } m = Math.pow(10, Math.max(r1, r2)); //动态控制精度长度 //n = (r1 >= r2) ? r1 : r2; return ((a * m - b * m) / m).toFixed(n); } Number.prototype.add = function (arg) { return fadd(this, arg); } Number.prototype.subs = function (arg) { return fsub(this, arg); } Number.prototype.mul = function (arg) { return fmul(this, arg); } Number.prototype.div = function (arg) { return fdiv(this, arg); } ///格式化数字位数,不足位数默认左边补0,如果指定了参数2并且参数2的值为1则右边补0 Number.prototype.FormatLen = function (len, direct) { var d = parseInt(direct); if (isNaN(d)) { d = 0; } var num = this.toString(); if (num.length < len) { for (var i = num.length; i < len; i++) { if (d == 0) { num = "0" + num; } else { num += "0"; } } } return num; } //格式化小数点数位,可以指定小数位数,是否四舍五入等参数 Number.prototype.FormatRadix = function (len, IsRound) { var num = this.toString(); var numArr = num.split(‘.‘); var rad = 0; var numpart = parseInt(numArr[0]); if (numArr.length >= 2) { if (numArr[1].length < len) { rad = parseInt(numArr[1]).FormatLen(len, 1); } else { if (numArr[1].length == len) { rad = numArr[1]; } else { rad = numArr[1].substr(0, len); if (IsRound) { var d = parseInt(numArr[1].substr(len, 1)); if (d >= 5) { rad += 1; if (rad.toString().length > len) { numpart += 1; rad = rad.toString().substr(1, len); } } } } } } else { rad = rad.FormatLen(len); } return numpart + "." + rad; } //检测字符串中是否有相同的元素split是字符串分隔符,如果指定了分隔符,则判断分隔符为分隔的字符串是否有重复,如果没指定则判断单个字符串是否有重复 //有重复返回true String.prototype.CompareElement = function (s) { var str = this.toString(); if (s == undefined) { for (var i = 0; i < str.length; i++) { for (j = i + 1; j < str.length; j++) { if (str.substr(i, 1) == str.substr(j, 1)) { return true; } } } } else { var strArr = str.split(s); for (var i = 0; i < strArr.length; i++) { for (var j = i + 1; j < strArr.length; j++) { if (strArr[i] == strArr[j]) { return true; } } } } return false; } String.prototype.replaceAll = function (str, tostr) { oStr = this; while (oStr.indexOf(str) > -1) { oStr = oStr.replace(str, tostr); } return oStr; } Array.prototype.CompareElement = function () { var strArr = this; for (var i = 0; i < strArr.length; i++) { for (var j = i + 1; j < strArr.length; j++) { if (strArr[i] == strArr[j]) { return true; } } } return false; } //字符串转组数,如果未指定分隔符s,则默认以,分隔分隔符,如果指定分隔符为空则将每个字符作为一个数组元素 String.prototype.ToArray = function (s) { if (s == undefined) { s = ","; } var strArr = []; strArr = this.split(s); return strArr; } //将一个数组转换一个字符串,所有元素使用指定的分隔符连接,默认分隔为, Array.prototype.ToIDList = function (s) { if (s == undefined) { s = ","; } var list = ""; for (var i = 0; i < this.length; i++) { list += (list == "" ? this[i] : s + "" + this[i]); } return list; } //获取指定元素的位置索引,元素不存在返回-1 Array.prototype.GetIndex = function (s) { var index = -1; for (var i = 0; i < this.length; i++) { if ((s + "") == this[i]) { index = i; } } return index; } //将指定元素从数组中删除 Array.prototype.Remove = function (s) { var list = ""; for (var i = 0; i < this.length; i++) { if (s != this[i]) { list += (list == "" ? this[i] : "," + this[i]); } } return list.ToArray(); } ///将数组进行数字排序asc指定是否进行升序排序,可以为true或者false,未指定为升序 Array.prototype.SortByNumber = function (asc) { if (asc == undefined) { asc = true; } if (asc) { return this.sort(SortNumberAsc); } else { return this.sort(SortNumberDesc); } } Array.prototype.InArray = function (e) { var IsIn = false; for (var i = 0; i < this.length; i++) { if (this[i] == (e + "")) { IsIn = true; } } return IsIn; } String.prototype.Trim = function (s) { return Trim(this, s); } String.prototype.LTrim = function (s) { return LTrim(this, s); } String.prototype.RTrim = function (s) { return RTrim(this, s); } //配合Array.SortByNumer使用,将数字进行数组降序排序 function SortNumberDesc(a, b) { return b - a; } //配合Array.SortByNumer使用,将数字进行数组升序排序 function SortNumberAsc(a, b) { return a - b; } //此处为独立函数 function LTrim(str, s) { if (s == undefined) { s = " "; } if (str == s && s != " ") { return s; } var i; for (i = 0; i < str.length; i++) { if (str.charAt(i) != s && str.charAt(i) != s) break; } str = str.substring(i, str.length); return str; } function RTrim(str, s) { var i; if (str == s && s != " ") { return s; } if (s == undefined) { s = " "; } for (i = str.length - 1; i >= 0; i--) { if (str.charAt(i) != s && str.charAt(i) != s) break; } str = str.substring(0, i + 1); return str; } function Trim(str, s) { return LTrim(RTrim(str, s), s); } ///检测字符串是否是由中文,英文,数字以及下划线组成的 function chkNickName(str) { var pattern = /^[\w\u4e00-\u9fa5]+$/gi; if (pattern.test(str)) { return true; } return false; } //判断长度(长度不限为0) String.prototype.IsLen = function () { var isRightFormat = false; var minnum = arguments[0] ? arguments[0] : 0; var maxnum = arguments[1] ? arguments[1] : 0; isRightFormat = (minnum == 0 && maxnum == 0 ? true : (calculate_byte(this) >= minnum && calculate_byte(this) <= maxnum ? true : false)); return isRightFormat; } //验证字符串是否为字母+数字+_+- String.prototype.IsStr = function () { var myReg = /^[0-9a-zA-Z\-\_]+$/; if (myReg.test(this)) return true; return false; } //验证用户名 String.prototype.IsUsername = function () { var myReg = /^[0-9a-zA-Z\-\_]{3,50}$/; if (myReg.test(this)) return true; return false; } //验证密码 String.prototype.IsPassword = function () { var myReg = /^[0-9a-zA-Z`~!@#$%^&*()-_+=\{\}\[\]\;\:\"\‘\?\/\\]{6,}$/; if (myReg.test(this)) return true; return false; } //验证是否为字母 String.prototype.IsEn = function () { var myReg = /^[a-zA-Z]+$/; if (myReg.test(this)) return true; return false; } //验证是否为汉字 String.prototype.IsCn = function () { var myReg = /^[\u0391-\uFFE5]+$/; if (myReg.test(this)) return true; return false; } //验证E-mail String.prototype.IsEmail = function () { var myReg = /([\w-\.]+)@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.)|(([\w-]+\.)+))([a-zA-Z]{2,4}|[0-9]{1,3})(\]?)/; if (myReg.test(this)) return true; return false; } //验证MSN String.prototype.IsMSN = function () { var myReg = /([\w-\.]+)@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.)|(([\w-]+\.)+))([a-zA-Z]{2,4}|[0-9]{1,3})(\]?)/; if (myReg.test(this)) return true; return false; } //验证QQ号码 String.prototype.IsQQ = function () { var myReg = /^[1-9]\d{4,10}$/; if (myReg.test(this)) return true; return false; } //验证网址 String.prototype.IsHttpUrl = function () { var myReg = /^http:\/\/[A-Za-z0-9]+\.[A-Za-z0-9]+[\/=\?%\-&_~`@[\]\‘:+!]*([^<>\"\"])*$/; if (myReg.test(this)) return true; return false; } //验证域名 String.prototype.IsDoMainName = function () { var myReg = /^[0-9a-zA-Z]([0-9a-zA-Z\-]+\.){1,3}[a-zA-Z]{2,4}?$/; if (myReg.test(this)) return true; return false; } //验证IPV4地址 String.prototype.IsIpv4 = function () { var myReg = /^(2[0-5]{2}|1?[0-9]{1,2}).(2[0-5]{2}|1?[0-9]{1,2}).(2[0-5]{2}|1?[0-9]{1,2}).(2[0-5]{2}|1?[0-9]{1,2})$/; if (myReg.test(this)) return true; return false; } //验证图片地址(不支持由CGI动态生成的图片) String.prototype.IsImgURL = function () { var myReg = /^\.(jpeg|jpg|gif|bmp|png|pcx|tiff|tga|lwf)$/; if (myReg.test(this)) return true; return false; } //验证手机号码 String.prototype.IsCellPhone = function () { var myReg = /^((\(\d{3}\))|(\d{3}\-))?1[3,5]\d{9}$/; if (myReg.test(this)) return true; return false; } //验证固定电话 String.prototype.IsPhone = function () { var myReg = /^[+]{0,1}(\d){1,3}[ ]?([-]?((\d)|[ ]){1,12})+$/; if (myReg.test(this)) return true; return false; } //验证邮编 String.prototype.IsZipCode = function () { var myReg = /[0-9]{6}/; if (myReg.test(this)) return true; return false; } //验证身份证号码 String.prototype.IsIdCard = function () { var myReg = /(^([\d]{15}|[\d]{18}|[\d]{17}[xX]{1})$)/; if (myReg.test(this)) return true; return false; } //验证日期格式YY-MM-DD String.prototype.IsDateFormat = function () { var myReg = /^[0-9]{4}-[0-9]{1,2}-[0-9]{1,2}$/; if (myReg.test(this)) return true; return false; } //验证时间格式HH:MM:SS String.prototype.IsRangeTime = function () { var myReg = /^(\d{2}):(\d{2}):(\d{2})$/; if (myReg.test(this)) return true; return false; } //验证金额格式 String.prototype.IsMoney = function () { var myReg = /^[0-9]{1,8}[.]{0,1}[0-9]{0,6}$/; if (myReg.test(this)) return true; return false; } //字验证数字格式并判断数字的围(min:最小值;max:最大值.) String.prototype.IsInt = function () { var isRightFormat = false; var minnum = arguments[0] ? arguments[0] : 0; var maxnum = arguments[1] ? arguments[1] : 0; var myReg = /^[-\+]?\d+$/; if (myReg.test(this)) { isRightFormat = (minnum == 0 && maxnum == 0 ? true : (this > minnum && this < maxnum ? true : false)); } return isRightFormat; } //验证搜索关键字 String.prototype.IsSearch = function () { var myReg = /^[\|\"\‘<>,.*&@#$;:!^()]/; if (myReg.test(this)) return false; return true; } //js准确计算字符串长度 function calculate_byte(sTargetStr) { var sTmpStr, sTmpChar; var nOriginLen = 0; var nStrLength = 0; sTmpStr = new String(sTargetStr); nOriginLen = sTmpStr.length; for (var i = 0; i < nOriginLen; i++) { sTmpChar = sTmpStr.charAt(i); if (escape(sTmpChar).length > 4) { nStrLength += 2; } else if (sTmpChar != ‘\r‘) { nStrLength++; } } return nStrLength; } //颜色值; String.prototype.IsColor = function () { var s = arguments[0] ? arguments[0] : ""; s = s.Trim(); if (s.length != 7) return false; return s.search(/\#[a-fA-F0-9]{6}/) != -1; } //js日期格式化 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.$1.length == 1 ? o[k] : ("00" + o[k]).substr(("" + o[k]).length)); } } return format; } function HasChinese(value) { if (/^[\u4e00-\u9fa5]+$/.test(value)) { return true; } return false; } function ToDate(dateStr) { var dStr = dateStr.toString(); dateStr = dStr.replaceAll("-", "/"); return new Date(Date.parse(dateStr)); } //是否ID列表 String.prototype.IsIdList = function (s) { if (s == undefined) { s = ","; } var arr = this.split(s); for (var i = 0; i < arr.length; i++) { if (isNaN(parseInt(arr[i]))) { return false; } } return true; } //获取事件触发的对象 function getEventTarget(e) { e = e || window.event; return e.target || e.srcElement; }

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