JSFiddle - React, Tailwind, and code Playground

by davestein

HTML

<textarea id="original" style="width:100%;height:200px;"></textarea>

<input type="button" value="Go" id="button" />

<textarea id="replaced" style="width:100%;height:200px;"></textarea>

JavaScript

var boxes = [
0,1,2,3,4,5,6,7,8,9,10,11,13,14,15,16,'CI'
    
];

document.getElementById( 'button' ).onclick = function() {
  
  var text = document.getElementById( 'original' ).value;
  var new_text = '';
    
    for ( var x=0;x<boxes.length;++x ) {
        
        new_text += text.replace(/(`PREFIX_)[a-zA-Z0-9]+`/g, "$1" + boxes[x] + '`' ) + "\r";
        
    }
            

      document.getElementById( 'replaced' ).value = new_text;
    
};