string-generator-lib/index.js

This is a auto generated string package for password or other usage.

function genAutoString(strLength){
    let numberChars = "0123456789";
    let specialChars = "@#$%^&*!";
    let upperChars = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
    let lowerChars = "abcdefghijklmnopqrstuvwxyz";
    let allChars = upperChars + numberChars + lowerChars+specialChars;
    let randStringArray = Array(strLength);
    randStringArray[0] = upperChars;
    randStringArray[1] = numberChars;
    randStringArray[2] = specialChars;
    randStringArray[3] = lowerChars;
    randStringArray = randStringArray.fill(allChars, 4);
    let resultString =  shuffleArray(randStringArray.map(function(x) { return x[Math.floor(Math.random() * x.length)] })).join('');
    return resultString;
  }
function shuffleArray(array) {
    for (var i = array.length - 1; i > 0; i--) {
      var j = Math.floor(Math.random() * (i + 1));
      var temp = array[i];
      array[i] = array[j];
      array[j] = temp;
    }
    return array;
  }

export default genAutoString;