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超轻量级php框架startmvc

javaScript字符串工具类StringUtils详解

更新时间:2020-06-18 07:36:01 作者:startmvc
本文实例为大家分享了javaScript字符串工具类的具体代码,供大家参考,具体内容如下StringUt

本文实例为大家分享了javaScript字符串工具类的具体代码,供大家参考,具体内容如下


StringUtils = { 
 isEmpty: function(input) { 
 return input == null || input == ''; 
 }, 
 isNotEmpty: function(input) { 
 return !this.isEmpty(input); 
 }, 
 isBlank: function(input) { 
 return input == null || /^\s*$/.test(input); 
 }, 
 isNotBlank: function(input) { 
 return !this.isBlank(input); 
 }, 
 trim: function(input) { 
 return input.replace(/^\s+|\s+$/, ''); 
 }, 
 trimToEmpty: function(input) { 
 return input == null ? "" : this.trim(input); 
 }, 
 startsWith: function(input, prefix) { 
 return input.indexOf(prefix) === 0; 
 }, 
 endsWith: function(input, suffix) { 
 return input.lastIndexOf(suffix) === 0; 
 }, 
 contains: function(input, searchSeq) { 
 return input.indexOf(searchSeq) >= 0; 
 }, 
 equals: function(input1, input2) { 
 return input1 == input2; 
 }, 
 equalsIgnoreCase: function(input1, input2) { 
 return input1.toLocaleLowerCase() == input2.toLocaleLowerCase(); 
 }, 
 containsWhitespace: function(input) { 
 return this.contains(input, ' '); 
 }, 
 //生成指定个数的字符 
 repeat: function(ch, repeatTimes) { 
 var result = ""; 
 for(var i = 0; i < repeatTimes; i++) { 
 result += ch; 
 } 
 return result; 
 }, 
 deleteWhitespace: function(input) { 
 return input.replace(/\s+/g, ''); 
 }, 
 rightPad: function(input, size, padStr) { 
 return input + this.repeat(padStr, size); 
 }, 
 leftPad: function(input, size, padStr) { 
 return this.repeat(padStr, size) + input; 
 }, 
 //首小写字母转大写 
 capitalize: function(input) { 
 var strLen = 0; 
 if(input == null || (strLen = input.length) == 0) { 
 return input; 
 } 
 return input.replace(/^[a-z]/, function(matchStr) { 
 return matchStr.toLocaleUpperCase(); 
 }); 
 }, 
 //首大写字母转小写 
 uncapitalize: function(input) { 
 var strLen = 0; 
 if(input == null || (strLen = input.length) == 0) { 
 return input; 
 } 
 return input.replace(/^[A-Z]/, function(matchStr) { 
 return matchStr.toLocaleLowerCase(); 
 }); 
 }, 
 //大写转小写,小写转大写 
 swapCase: function(input) { 
 return input.replace(/[a-z]/ig, function(matchStr) { 
 if(matchStr >= 'A' && matchStr <= 'Z') { 
 return matchStr.toLocaleLowerCase(); 
 } else if(matchStr >= 'a' && matchStr <= 'z') { 
 return matchStr.toLocaleUpperCase(); 
 } 
 }); 
 }, 
 //统计含有的子字符串的个数 
 countMatches: function(input, sub) { 
 if(this.isEmpty(input) || this.isEmpty(sub)) { 
 return 0; 
 } 
 var count = 0; 
 var index = 0; 
 while((index = input.indexOf(sub, index)) != -1) { 
 index += sub.length; 
 count++; 
 } 
 return count; 
 }, 
 //只包含字母 
 isAlpha: function(input) { 
 return /^[a-z]+$/i.test(input); 
 }, 
 //只包含字母、空格 
 isAlphaSpace: function(input) { 
 return /^[a-z\s]*$/i.test(input); 
 }, 
 //只包含字母、数字 
 isAlphanumeric: function(input) { 
 return /^[a-z0-9]+$/i.test(input); 
 }, 
 //只包含字母、数字和空格 
 isAlphanumericSpace: function(input) { 
 return /^[a-z0-9\s]*$/i.test(input); 
 }, 
 //数字 
 isNumeric: function(input) { 
 return /^(?:[1-9]\d*|0)(?:\.\d+)?$/.test(input); 
 }, 
 //小数 
 isDecimal: function(input) { 
 return /^[-+]?(?:0|[1-9]\d*)\.\d+$/.test(input); 
 }, 
 //负小数 
 isNegativeDecimal: function(input) { 
 return /^\-?(?:0|[1-9]\d*)\.\d+$/.test(input); 
 }, 
 //正小数 
 isPositiveDecimal: function(input) { 
 return /^\+?(?:0|[1-9]\d*)\.\d+$/.test(input); 
 }, 
 //整数 
 isInteger: function(input) { 
 return /^[-+]?(?:0|[1-9]\d*)$/.test(input); 
 }, 
 //正整数 
 isPositiveInteger: function(input) { 
 return /^\+?(?:0|[1-9]\d*)$/.test(input); 
 }, 
 //负整数 
 isNegativeInteger: function(input) { 
 return /^\-?(?:0|[1-9]\d*)$/.test(input); 
 }, 
 //只包含数字和空格 
 isNumericSpace: function(input) { 
 return /^[\d\s]*$/.test(input); 
 }, 
 isWhitespace: function(input) { 
 return /^\s*$/.test(input); 
 }, 
 isAllLowerCase: function(input) { 
 return /^[a-z]+$/.test(input); 
 }, 
 isAllUpperCase: function(input) { 
 return /^[A-Z]+$/.test(input); 
 }, 
 defaultString: function(input, defaultStr) { 
 return input == null ? defaultStr : input; 
 }, 
 defaultIfBlank: function(input, defaultStr) { 
 return this.isBlank(input) ? defaultStr : input; 
 }, 
 defaultIfEmpty: function(input, defaultStr) { 
 return this.isEmpty(input) ? defaultStr : input; 
 }, 
 //字符串反转 
 reverse: function(input) { 
 if(this.isBlank(input)) { 
 input; 
 } 
 return input.split("").reverse().join(""); 
 }, 
 //删掉特殊字符(英文状态下) 
 removeSpecialCharacter: function(input) { 
 return input.replace(/[!-/:-@\[-`{-~]/g, ""); 
 }, 
 //只包含特殊字符、数字和字母(不包括空格,若想包括空格,改为[ -~]) 
 isSpecialCharacterAlphanumeric: function(input) { 
 return /^[!-~]+$/.test(input); 
 }, 
 /** 
 * 校验时排除某些字符串,即不能包含某些字符串 
 * @param {Object} conditions:里面有多个属性,如下: 
 * 
 * @param {String} matcherFlag 匹配标识 
 * 0:数字;1:字母;2:小写字母;3:大写字母;4:特殊字符,指英文状态下的标点符号及括号等;5:中文; 
 * 6:数字和字母;7:数字和小写字母;8:数字和大写字母;9:数字、字母和特殊字符;10:数字和中文; 
 * 11:小写字母和特殊字符;12:大写字母和特殊字符;13:字母和特殊字符;14:小写字母和中文;15:大写字母和中文; 
 * 16:字母和中文;17:特殊字符、和中文;18:特殊字符、字母和中文;19:特殊字符、小写字母和中文;20:特殊字符、大写字母和中文; 
 * 100:所有字符; 
 * @param {Array} excludeStrArr 排除的字符串,数组格式 
 * @param {String} length 长度,可为空。1,2表示长度1到2之间;10,表示10个以上字符;5表示长度为5 
 * @param {Boolean} ignoreCase 是否忽略大小写 
 * conditions={matcherFlag:"0",excludeStrArr:[],length:"",ignoreCase:true} 
 */ 
 isPatternMustExcludeSomeStr: function(input, conditions) { 
 //参数 
 var matcherFlag = conditions.matcherFlag; 
 var excludeStrArr = conditions.excludeStrArr; 
 var length = conditions.length; 
 var ignoreCase = conditions.ignoreCase; 
 //拼正则 
 var size = excludeStrArr.length; 
 var regex = (size == 0) ? "^" : "^(?!.*(?:{0}))"; 
 var subPattern = ""; 
 for(var i = 0; i < size; i++) { 
 excludeStrArr[i] = Bee.StringUtils.escapeMetacharacterOfStr(excludeStrArr[i]); 
 subPattern += excludeStrArr[i]; 
 if(i != size - 1) { 
 subPattern += "|"; 
 } 
 } 
 regex = this.format(regex, [subPattern]); 
 switch(matcherFlag) { 
 case '0': 
 regex += "\\d"; 
 break; 
 case '1': 
 regex += "[a-zA-Z]"; 
 break; 
 case '2': 
 regex += "[a-z]"; 
 break; 
 case '3': 
 regex += "[A-Z]"; 
 break; 
 case '4': 
 regex += "[!-/:-@\[-`{-~]"; 
 break; 
 case '5': 
 regex += "[\u4E00-\u9FA5]"; 
 break; 
 case '6': 
 regex += "[a-zA-Z0-9]"; 
 break; 
 case '7': 
 regex += "[a-z0-9]"; 
 break; 
 case '8': 
 regex += "[A-Z0-9]"; 
 break; 
 case '9': 
 regex += "[!-~]"; 
 break; 
 case '10': 
 regex += "[0-9\u4E00-\u9FA5]"; 
 break; 
 case '11': 
 regex += "[a-z!-/:-@\[-`{-~]"; 
 break; 
 case '12': 
 regex += "[A-Z!-/:-@\[-`{-~]"; 
 break; 
 case '13': 
 regex += "[a-zA-Z!-/:-@\[-`{-~]"; 
 break; 
 case '14': 
 regex += "[a-z\u4E00-\u9FA5]"; 
 break; 
 case '15': 
 regex += "[A-Z\u4E00-\u9FA5]"; 
 break; 
 case '16': 
 regex += "[a-zA-Z\u4E00-\u9FA5]"; 
 break; 
 case '17': 
 regex += "[\u4E00-\u9FA5!-/:-@\[-`{-~]"; 
 break; 
 case '18': 
 regex += "[\u4E00-\u9FA5!-~]"; 
 break; 
 case '19': 
 regex += "[a-z\u4E00-\u9FA5!-/:-@\[-`{-~]"; 
 break; 
 case '20': 
 regex += "[A-Z\u4E00-\u9FA5!-/:-@\[-`{-~]"; 
 break; 
 case '100': 
 regex += "[\s\S]"; 
 break; 
 default: 
 alert(matcherFlag + ":This type is not supported!"); 
 } 
 regex += this.isNotBlank(length) ? "{" + length + "}" : "+"; 
 regex += "$"; 
 var pattern = new RegExp(regex, ignoreCase ? "i" : ""); 
 return pattern.test(input); 
 }, 
 /** 
 * @param {String} message 
 * @param {Array} arr 
 * 消息格式化 
 */ 
 format: function(message, arr) { 
 return message.replace(/{(\d+)}/g, function(matchStr, group1) { 
 return arr[group1]; 
 }); 
 }, 
 /** 
 * 把连续出现多次的字母字符串进行压缩。如输入:aaabbbbcccccd 输出:3a4b5cd 
 * @param {String} input 
 * @param {Boolean} ignoreCase : true or false 
 */ 
 compressRepeatedStr: function(input, ignoreCase) { 
 var pattern = new RegExp("([a-z])\\1+", ignoreCase ? "ig" : "g"); 
 return result = input.replace(pattern, function(matchStr, group1) { 
 return matchStr.length + group1; 
 }); 
 }, 
 /** 
 * 校验必须同时包含某些字符串 
 * @param {String} input 
 * @param {Object} conditions:里面有多个属性,如下: 
 * 
 * @param {String} matcherFlag 匹配标识 
 * 0:数字;1:字母;2:小写字母;3:大写字母;4:特殊字符,指英文状态下的标点符号及括号等;5:中文; 
 * 6:数字和字母;7:数字和小写字母;8:数字和大写字母;9:数字、字母和特殊字符;10:数字和中文; 
 * 11:小写字母和特殊字符;12:大写字母和特殊字符;13:字母和特殊字符;14:小写字母和中文;15:大写字母和中文; 
 * 16:字母和中文;17:特殊字符、和中文;18:特殊字符、字母和中文;19:特殊字符、小写字母和中文;20:特殊字符、大写字母和中文; 
 * 100:所有字符; 
 * @param {Array} excludeStrArr 排除的字符串,数组格式 
 * @param {String} length 长度,可为空。1,2表示长度1到2之间;10,表示10个以上字符;5表示长度为5 
 * @param {Boolean} ignoreCase 是否忽略大小写 
 * conditions={matcherFlag:"0",containStrArr:[],length:"",ignoreCase:true} 
 * 
 */ 
 isPatternMustContainSomeStr: function(input, conditions) { 
 //参数 
 var matcherFlag = conditions.matcherFlag; 
 var containStrArr = conditions.containStrArr; 
 var length = conditions.length; 
 var ignoreCase = conditions.ignoreCase; 
 //创建正则 
 var size = containStrArr.length; 
 var regex = "^"; 
 var subPattern = ""; 
 for(var i = 0; i < size; i++) { 
 containStrArr[i] = Bee.StringUtils.escapeMetacharacterOfStr(containStrArr[i]); 
 subPattern += "(?=.*" + containStrArr[i] + ")"; 
 } 
 regex += subPattern; 
 switch(matcherFlag) { 
 case '0': 
 regex += "\\d"; 
 break; 
 case '1': 
 regex += "[a-zA-Z]"; 
 break; 
 case '2': 
 regex += "[a-z]"; 
 break; 
 case '3': 
 regex += "[A-Z]"; 
 break; 
 case '4': 
 regex += "[!-/:-@\[-`{-~]"; 
 break; 
 case '5': 
 regex += "[\u4E00-\u9FA5]"; 
 break; 
 case '6': 
 regex += "[a-zA-Z0-9]"; 
 break; 
 case '7': 
 regex += "[a-z0-9]"; 
 break; 
 case '8': 
 regex += "[A-Z0-9]"; 
 break; 
 case '9': 
 regex += "[!-~]"; 
 break; 
 case '10': 
 regex += "[0-9\u4E00-\u9FA5]"; 
 break; 
 case '11': 
 regex += "[a-z!-/:-@\[-`{-~]"; 
 break; 
 case '12': 
 regex += "[A-Z!-/:-@\[-`{-~]"; 
 break; 
 case '13': 
 regex += "[a-zA-Z!-/:-@\[-`{-~]"; 
 break; 
 case '14': 
 regex += "[a-z\u4E00-\u9FA5]"; 
 break; 
 case '15': 
 regex += "[A-Z\u4E00-\u9FA5]"; 
 break; 
 case '16': 
 regex += "[a-zA-Z\u4E00-\u9FA5]"; 
 break; 
 case '17': 
 regex += "[\u4E00-\u9FA5!-/:-@\[-`{-~]"; 
 break; 
 case '18': 
 regex += "[\u4E00-\u9FA5!-~]"; 
 break; 
 case '19': 
 regex += "[a-z\u4E00-\u9FA5!-/:-@\[-`{-~]"; 
 break; 
 case '20': 
 regex += "[A-Z\u4E00-\u9FA5!-/:-@\[-`{-~]"; 
 break; 
 case '100': 
 regex += "[\s\S]"; 
 break; 
 default: 
 alert(matcherFlag + ":This type is not supported!"); 
 } 
 regex += this.isNotBlank(length) ? "{" + length + "}" : "+"; 
 regex += "$"; 
 var pattern = new RegExp(regex, ignoreCase ? "i" : ""); 
 return pattern.test(input); 
 }, 
 //中文校验 
 isChinese: function(input) { 
 return /^[\u4E00-\u9FA5]+$/.test(input); 
 }, 
 //去掉中文字符 
 removeChinese: function(input) { 
 return input.replace(/[\u4E00-\u9FA5]+/gm, ""); 
 }, 
 //转义元字符 
 escapeMetacharacter: function(input) { 
 var metacharacter = "^$()*+.[]|\\-?{}|"; 
 if(metacharacter.indexOf(input) >= 0) { 
 input = "\\" + input; 
 } 
 return input; 
 }, 
 //转义字符串中的元字符 
 escapeMetacharacterOfStr: function(input) { 
 return input.replace(/[\^\$\*\+\.
\|\\\-\?\{\}\|]/gm, "\\$&"); 
 } 
 
 }; 

以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持脚本之家。

javaScript 字符串工具类 sringUtils