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index.js
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index.js
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const ENGLISH_ALPHABET = "abcdefghijklmnopqrstuvwxyz"
const ENGLISH_ALPHABET_WITH_NUMBERS = "abcdefghijklmnopqrstuvwxyz0123456789"
const ENGLISH_ALPHABET_WITH_NUMBERS_AND_SYMBOLS = "abcdefghijklmnopqrstuvwxyz0123456789_-!@#$%^&*()+={[}]|:;<,>.?"
module.exports.random = () =>{
return Math.random();
}
module.exports.randomNumberWithRange = (min,max) =>{
return Math.random() * (max - min) + min;
}
module.exports.randomNumberWithRangeInteger = (min,max) =>{
return Math.floor(Math.random() * (max - min) + min);
}
module.exports.randomStringLettersOnly = (length,capitalized) =>{
let total = 0;
let result = "";
while (total < length) {
let position = module.exports.randomNumberWithRangeInteger(0, ENGLISH_ALPHABET.length);
let character = ENGLISH_ALPHABET.substr(position,1);
result = result +character;
total++;
}
if (capitalized == true){
result = result.toUpperCase();
return result;
}
return result;
}
module.exports.randomStringLettersAndNumbers = (length,capitalized) =>{
let total = 0;
let result = "";
while (total < length) {
let position = module.exports.randomNumberWithRangeInteger(0, ENGLISH_ALPHABET_WITH_NUMBERS.length);
let character = ENGLISH_ALPHABET_WITH_NUMBERS.substr(position,1);
result = result +character;
total++;
}
if (capitalized == true){
result = result.toUpperCase();
return result;
}
return result;
}
module.exports.randomStringLettersAndNumbersAndSymbols = (length,capitalized) =>{
let total = 0;
let result = "";
while (total < length) {
let position = module.exports.randomNumberWithRangeInteger(0, ENGLISH_ALPHABET_WITH_NUMBERS_AND_SYMBOLS.length);
let character = ENGLISH_ALPHABET_WITH_NUMBERS_AND_SYMBOLS.substr(position,1);
result = result +character;
total++;
}
if (capitalized == true){
result = result.toUpperCase();
return result;
}
return result;
}
module.exports.randomStringLettersAndNumbersAndSymbolsMixedCapitals = (length) =>{
let total = 0;
let result = "";
while (total < length) {
let capitalized = Math.random() < 0.5;
let character = module.exports.randomStringLettersAndNumbersAndSymbols(1,capitalized);
result = result +character;
total++;
}
return result;
}
module.exports.randomStringLettersAndNumbersMixed = (length) =>{
let total = 0;
let result = "";
while (total < length) {
let capitalized = Math.random() < 0.5;
let character = module.exports.randomStringLettersAndNumbers(1,capitalized);
result = result +character;
total++;
}
return result;
}
module.exports.randomStringCustomAlphabet = (length,alphabet) =>{
let total = 0;
let result = "";
while (total < length) {
let position = module.exports.randomNumberWithRangeInteger(0, alphabet.length);
let character = alphabet.substr(position,1);
result = result +character;
total++;
}
return result;
}
console.log("random "+module.exports.random());
console.log("random with range float "+module.exports.randomNumberWithRange(0,10));
console.log("random with range integer "+module.exports.randomNumberWithRangeInteger(0,10));
console.log("random string with length "+module.exports.randomStringLettersOnly(10,false));
console.log("random string with length capitalized "+module.exports.randomStringLettersOnly(10,true));
console.log("random string and numbers "+module.exports.randomStringLettersAndNumbers(10,false));
console.log("random string and numbers capitalized "+module.exports.randomStringLettersAndNumbers(10,true));
console.log("random string and numbers with symbols"+module.exports.randomStringLettersAndNumbersAndSymbols(10,false));
console.log("random string and numbers capitalized with symbols "+module.exports.randomStringLettersAndNumbersAndSymbols(10,true));
console.log("random string and numbers and symbols mixed "+module.exports.randomStringLettersAndNumbersAndSymbolsMixedCapitals(10));
console.log("random string and numbers and symbols mixed "+module.exports.randomStringLettersAndNumbersMixed(10));
console.log("random string custom alphabet "+module.exports.randomStringCustomAlphabet(10,"АаБбВвГгДдЕеЁёЖжЗзИиЙйКкЛлМмНнОоПпСсТтУуФфХхЦцЧчШшЩщЪъЫыЬьЭэЮюЯя"));