regex to change a specific string [duplicate]

Answer 1

Not exactly sure what your full translator is trying to do but to get the original mapping you only have to add an 'a' to the first regex.

$(document).ready(function(){

$("#ta_1").keyup(function(event) {

var text2 = $(this).val();

text2 = text2.replace(/al/g, "aL");

text2 = text2.replace(/([^L]|^)am/g, '$1m');

text2 = text2.replace(/\bLam\b/g, "Lm");
 
$("#ta_1").val(text2);
  
  
});
  
});