set value of form event listener code example

Example 1: handling event changes

<button>Act-once button</button>
<script>
  let button = document.querySelector("button");
  function once() {
    console.log("Done.");
    button.removeEventListener("click", once);
  }
  button.addEventListener("click", once);
</script>

Example 2: addeventlistener js select item

selectId.addEventListener("change", function() {

});

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Html Example

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