html运行实例（eg_js_const_object_assign）-搜寻教程库

代码示例：（标识：eg_js_const_object_assign）

<!DOCTYPE html>
<html>
<body>

<h2>JavaScript const</h2>

<p>但是你不能重新赋值一个常量对象：</p>

<p id="demo"></p>

<script>
try {
  const car = {type:"Porsche", model:"911", color:"white"};
  car = {type:"BMW", model:"M5", color:"red"};
}
catch (err) {
  document.getElementById("demo").innerHTML = err;
}
</script>

</body>
</html>