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Initializing and setting events inside a jquery function

Can you please tell me how can I set the test function for the keyup element inside the test() function; What would be only the function call in document ready, and all other events in the function itself.

jQuery.fn.extend({
  test: function() {
    $(this).val("123");
  }
  $(this).test();
  $(this).keyup(function() {
    $(this).test();
  });
});
$(document).ready(function() {
  $("input").test();
})
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<input type="text" value="456">

about 4 years ago · Juan Pablo Isaza
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