javascript - How do you monitor a read only input in jquery? The .change() method doesnt work as it only works for non read-only inputs -

if have line of code in html file:

i cannot use code update contractlengthdisplay because read only:

$("#contractlengthdisplay").change(function(){    alert(1); }); 

is there alternative .change() method if input read only? thanks!

use .trigger("change") notify listener

$("#contractlengthdisplay").on("change", function() { // attach listener    console.log( this.value );  });      $("#contractlengthdisplay")      .val("bbbbb")                // change value      .trigger("change");          // , notify listener triggering event

<script src="https://code.jquery.com/jquery-3.1.0.js"></script>  <input id="contractlengthdisplay" value="aaaaa" readonly>