尝试在内联样式的常量中使用"if-else“语句，无法编译错误

<div id="myElement" class="default-style"></div>

var element = document.getElementById("myElement");
if (condition) {
  element.classList.add("conditional-style");
} else {
  element.classList.remove("conditional-style");
}

.default-style {
  /* 默认样式 */
}

.conditional-style {
  /* 条件样式 */
}

<div id="myElement" style="background-color: blue;"></div>

var element = document.getElementById("myElement");
if (condition) {
  element.style.backgroundColor = "red";
} else {
  element.style.backgroundColor = "green";
}