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  <meta charset=UTF-8>



  <meta name=viewport content="width=device-width,initial-scale=1">



  <title>onchange — vs oninput</title>



  <style>body{font-family:system-ui,sans-serif;margin:0;padding:1.5rem;background:#f8fafc;color:#334155;line-height:1.7}h1{margin:0 0 .75rem;font-size:1.25rem;color:#0f172a}label{display:block;font-weight:600;margin-bottom:.35rem}input{width:100%;max-width:320px;padding:.5rem;font:inherit;border:1px solid #cbd5e1;border-radius:6px}ul{margin:1rem 0 0;padding-left:1.25rem;font-size:.8125rem;max-width:420px}li{margin-bottom:.35rem}.change{color:#1d4ed8;font-weight:600}code{background:#e2e8f0;padding:.1rem .35rem;border-radius:4px}</style>



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  <h1>change vs input</h1>



  <p><code>input</code> fires on every keystroke. <code>change</code> fires when the value is committed (blur on text fields).</p>



  <label for=name>Name</label>



  <input id=name placeholder="Type, then tab away…">



  <ul id=log></ul>





  <script>



    var field = document.getElementById("name");



    var log = document.getElementById("log");





    function add(line, cls) {



      var li = document.createElement("li");



      if (cls) li.className = cls;



      li.textContent = line;



      log.appendChild(li);



      if (log.children.length > 8) log.removeChild(log.firstChild);



    }





    field.addEventListener("input", function () {



      add("input — typing: "" + this.value + """);



    });





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



      add("change — committed: "" + this.value + """, "change");



    });



  </script>



</body>



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HTML onchange Attribute — vs oninput