javaScript 문자열 도구 클래스 StringUtils 상세 설명

본 논문 의 사례 는 자바 script 문자열 도구 류 의 구체 적 인 코드 를 공유 하 였 으 며,구체 적 인 내용 은 다음 과 같 습 니 다.

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, ' '); 
  }, 
  //          
  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; 
  }, 
  //         
  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(); 
   }); 
  }, 
  //         
  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(); 
   }); 
  }, 
  //     ,      
  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(); 
    } 
   }); 
  }, 
  //             
  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; 
  }, 
  //      
  isAlpha: function(input) { 
   return /^[a-z]+$/i.test(input); 
  }, 
  //     、   
  isAlphaSpace: function(input) { 
   return /^[a-z\s]*$/i.test(input); 
  }, 
  //     、   
  isAlphanumeric: function(input) { 
   return /^[a-z0-9]+$/i.test(input); 
  }, 
  //     、      
  isAlphanumericSpace: function(input) { 
   return /^[a-z0-9\s]*$/i.test(input); 
  }, 
  //   
  isNumeric: function(input) { 
   return /^(?:[1-9]\d*|0)(?:\.\d+)?$/.test(input); 
  }, 
  //   
  isDecimal: function(input) { 
   return /^[-+]?(?:0|[1-9]\d*)\.\d+$/.test(input); 
  }, 
  //    
  isNegativeDecimal: function(input) { 
   return /^\-?(?:0|[1-9]\d*)\.\d+$/.test(input); 
  }, 
  //    
  isPositiveDecimal: function(input) { 
   return /^\+?(?:0|[1-9]\d*)\.\d+$/.test(input); 
  }, 
  //   
  isInteger: function(input) { 
   return /^[-+]?(?:0|[1-9]\d*)$/.test(input); 
  }, 
  //    
  isPositiveInteger: function(input) { 
   return /^\+?(?:0|[1-9]\d*)$/.test(input); 
  }, 
  //    
  isNegativeInteger: function(input) { 
   return /^\-?(?:0|[1-9]\d*)$/.test(input); 
  }, 
  //         
  isNumericSpace: function(input) { 
   return /^[\d\s]*$/.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; 
  }, 
  //      
  reverse: function(input) { 
   if(this.isBlank(input)) { 
    input; 
   } 
   return input.split("").reverse().join(""); 
  }, 
  //      (     ) 
  removeSpecialCharacter: function(input) { 
   return input.replace(/[!-/:-@\[-`{-~]/g, ""); 
  }, 
  //       、     (     ,      ,  [ -~]) 
  isSpecialCharacterAlphanumeric: function(input) { 
   return /^[!-~]+$/.test(input); 
  }, 
  /** 
   *           ,           
   * @param {Object} conditions:       ,  : 
   * 
   * @param {String} matcherFlag      
   * 0:  ;1:  ;2:    ;3:    ;4:    ,               ;5:  ; 
   * 6:     ;7:       ;8:       ;9:  、       ;10:     ; 
   * 11:         ;12:         ;13:       ;14:       ;15:       ; 
   * 16:     ;17:    、   ;18:    、     ;19:    、       ;20:    、       ; 
   * 100:    ; 
   * @param {Array} excludeStrArr       ,     
   * @param {String} length   ,   。1,2    1 2  ;10,  10     ;5     5 
   * @param {Boolean} ignoreCase         
   * conditions={matcherFlag:"0",excludeStrArr:[],length:"",ignoreCase:true} 
   */ 
  isPatternMustExcludeSomeStr: function(input, conditions) { 
   //   
   var matcherFlag = conditions.matcherFlag; 
   var excludeStrArr = conditions.excludeStrArr; 
   var length = conditions.length; 
   var ignoreCase = conditions.ignoreCase; 
   //    
   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 
   *       
   */ 
  format: function(message, arr) { 
   return message.replace(/{(\d+)}/g, function(matchStr, group1) { 
    return arr[group1]; 
   }); 
  }, 
  /** 
   *                  。   :aaabbbbcccccd   :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; 
   }); 
  }, 
  /** 
   *               
   * @param {String} input 
   * @param {Object} conditions:       ,  : 
   * 
   * @param {String} matcherFlag      
   * 0:  ;1:  ;2:    ;3:    ;4:    ,               ;5:  ; 
   * 6:     ;7:       ;8:       ;9:  、       ;10:     ; 
   * 11:         ;12:         ;13:       ;14:       ;15:       ; 
   * 16:     ;17:    、   ;18:    、     ;19:    、       ;20:    、       ; 
   * 100:    ; 
   * @param {Array} excludeStrArr       ,     
   * @param {String} length   ,   。1,2    1 2  ;10,  10     ;5     5 
   * @param {Boolean} ignoreCase         
   * conditions={matcherFlag:"0",containStrArr:[],length:"",ignoreCase:true} 
   * 
   */ 
  isPatternMustContainSomeStr: function(input, conditions) { 
   //   
   var matcherFlag = conditions.matcherFlag; 
   var containStrArr = conditions.containStrArr; 
   var length = conditions.length; 
   var ignoreCase = conditions.ignoreCase; 
   //     
   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 += "$"; 
   var pattern = new RegExp(regex, ignoreCase ? "i" : ""); 
   return pattern.test(input); 
  }, 
  //     
  isChinese: function(input) { 
   return /^[\u4E00-\u9FA5]+$/.test(input); 
  }, 
  //       
  removeChinese: function(input) { 
   return input.replace(/[\u4E00-\u9FA5]+/gm, ""); 
  }, 
  //      
  escapeMetacharacter: function(input) { 
   var metacharacter = "^$()*+.[]|\\-?{}|"; 
   if(metacharacter.indexOf(input) >= 0) { 
    input = "\\" + input; 
   } 
   return input; 
  }, 
  //           
  escapeMetacharacterOfStr: function(input) { 
   return input.replace(/[\^\$\*\+\.
\|\\\-\?\{\}\|]/gm, "\\$&"); 
  } 
 
 }; 
이상 이 바로 본 고의 모든 내용 입 니 다.여러분 의 학습 에 도움 이 되 고 저 희 를 많이 응원 해 주 셨 으 면 좋 겠 습 니 다.

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