$wVg.js

/************************************************************
$ W V G
*************************************************************
*
* Copyright (c) 2016, Johnjimy Som, Shinesunny Som
*
* SwVG is released under WTFPL license
*
************************************************************/

jQuery.fn.swag = function() {
  // $wVG mapping
  var swag = [
    ["a", "ɐ"],
    ["b", "ß"],
    ["c", "¢"],
    ["d", "₫"],
    ["e", "€"],
    ["f", "ƒ"],
    ["g", "₲"],
    ["h", "ħ"],
    ["i", "ї"],
    ["j", "ℑ"],
    ["k", "₭"],
    ["l", "ℓ"],
    ["m", "₥"],
    ["n", "Π"],
    ["o", "ö"],
    ["p", "¶"],
    ["q", "ℚ"],
    ["r", "®"],
    ["s", "$"],
    ["t", "τ"],
    ["u", "μ"],
    ["v", "℣"],
    ["w", "ω"],
    ["x", "ж"],
    ["y", "ÿ"],
    ["z", "ζ"],

    ["A", "∀"],
    ["B", "ß"],
    ["C", "℃"],
    ["D", "₫"],
    ["E", "Σ"],
    ["F", "£"],
    ["G", "₲"],
    ["H", "Ḧ"],
    ["I", "エ"],
    ["J", "⅃"],
    ["K", "₭"],
    ["L", "∫"],
    ["M", "ℳ"],
    ["N", "Π"],
    ["O", "Θ"],
    ["P", "¶"],
    ["Q", "ℚ"],
    ["R", "ℜ"],
    ["S", "§"],
    ["T", "₸"],
    ["U", "℧"],
    ["V", "℣"],
    ["W", "@"],
    ["X", "χ"],
    ["Y", "λ"],
    ["Z", "ζ"]
  ]; //end $WVg mapping

  // For every letter, convert to the text if possible
  this.keyup(function() {
    var input_field_string = this.value;
    var speed_offset_error = 0;

    // for each array iterate through the swag map and replace the input string
    // if it matches, the letter are rewritten
    for (var i = 0; i < swag.length; i++) {
      input_field_string = input_field_string.replace(swag[i][0], swag[i][1]);

      if (input_field_string != this.value)
        //if no letters match the map, do nothing.
        break;
    } // end for loop

    // setting the correct cursor location
    if (input_field_string != this.value) {
      var original_string = this.value.split("");

      // replace the letters with "swag" symbols in the textfield
      this.value = input_field_string;
      var new_string = input_field_string.split("");
      var tmp_new_length = new_string.length;

      //typing cursor position error fix
      for (var i = 0; i < new_string.length; i++) {
        var char_value = new_string[i].charCodeAt(0);
        if (
          (char_value >= 65 && char_value <= 90) ||
          (char_value >= 97 && char_value <= 122)
        )
          speed_offset_error = 1;
      } //end for

      // calculate cursor position
      for (var i = original_string.length - 1; i >= 0; i--) {
        var j = tmp_new_length - 1;

        if (original_string[i] != new_string[j]) {
          var offset = original_string.length - i;
          var current_position =
            new_string.length - offset + 1 + speed_offset_error;
          break;
        } //end if

        tmp_new_length--;
      } //end for loop

      //resets cursor position
      $(this).setCursorPosition(current_position);
    } //end if loop
  }); //end jQuery function $wVg
};

// reset cursor position (next to letters-$wVg conversion location)
jQuery.fn.setCursorPosition = function(current_position) {
  return this.each(function() {
    if (this.setSelectionRange) {
      this.focus();
      this.setSelectionRange(current_position, current_position);
    } else if (this.createTextRange) {
      //end if
      var range = this.createTextRange();
      range.collapse(true);
      range.moveEnd("character", current_position);
      range.moveStart("character", current_position);
      range.select();
    } //end if else function
  }); //end return function
}; //end jQuery function