当我检查是否至少有一个输入完成时显示一个按钮，当输入==为空时隐藏相同的按钮

<input type="text" id="input1" onkeyup="checkInputs()">
<input type="text" id="input2" onkeyup="checkInputs()">
<input type="text" id="input3" onkeyup="checkInputs()">
<button id="submitButton" style="display: none;">提交</button>

function checkInputs() {
  var input1 = document.getElementById("input1").value;
  var input2 = document.getElementById("input2").value;
  var input3 = document.getElementById("input3").value;
  var submitButton = document.getElementById("submitButton");

  if (input1 !== "" || input2 !== "" || input3 !== "") {
    submitButton.style.display = "block";
  } else {
    submitButton.style.display = "none";
  }
}