【el-time-picker设置默认值】Cannot read properties of undefined (reading ‘hour‘)

需求：设置默认时间为2：0：0的时间选择器
产生报错的写法：

            <el-time-picker
              v-model="state.ruleForm.time"
              placeholder="请选择时间点"
              :default-value="new Date(0, 0, 0, 2, 0, 0)"
              style="width: 100%"
              value-format="HH-mm-ss"
              :disabled="!state.ruleForm.check" />

const state = reactive({
  ruleForm: {
    check: false,
    time: new Date(0, 0, 0, 2, 0, 0),
  },
});

原因：value-format指定了绑定值的格式为字符串，绑定的值是Date格式。它默认绑定的值是Date格式。default-value 用于指定默认值。

写法1：绑定值为时间字符串

            <el-time-picker
              v-model="state.ruleForm.time"
              placeholder="请选择时间点"
              style="width: 100%"
              :default-value="2:0:0"
              value-format="HH-mm-ss"
              :disabled="!state.ruleForm.check" />

写法2：绑定值为Date对象

          <el-time-picker
              v-model="state.ruleForm.time"
              placeholder="请选择时间点"
              :default-value="new Date(0, 0, 0, 2, 0, 0)"
              style="width: 100%"
              :disabled="!state.ruleForm.check" />