如何解决 Vue3 Simple Time Picker 库中的状态更新问题？

2024-03-17 13:56:27

解决 Vue3 Simple Time Picker 库中的状态更新问题

问题

使用 Vue3 Simple Time Picker 库时，更新组件的状态后，时间选择器组件中的值不会自动更新。

解决方案

解决此问题的步骤：

1. 使用 v-model 绑定状态

<vue-timepicker format="hh:mm:ss" v-model="rest_time"></vue-timepicker>

2. 使用 watch 监视状态变化

watch: {
  rest_time: {
    handler(newValue) {
      this.$refs.timePicker.value = newValue;
    },
    immediate: true,
  },
},

3. 使用 ref 访问组件实例

<vue-timepicker format="hh:mm:ss" v-model="rest_time" ref="timePicker"></vue-timepicker>

4. 手动更新时间选择器组件的值

change() {
  this.rest_time = {
    hh: "10",
    mm: "20",
    ss: "40",
  };

  // 手动更新时间选择器组件的值
  this.$refs.timePicker.value = this.rest_time;
},

代码示例

<template>
  <div>
    <h1>Time Picker</h1>
    state : {{ rest_time }}
    <vue-timepicker format="hh:mm:ss" v-model="rest_time" ref="timePicker"></vue-timepicker>
    <button @click="change">make time 10:20:40</button>
  </div>
</template>
<script>
import VueTimePicker from "vue3-timepicker";
import "vue3-timepicker/dist/VueTimepicker.css";
export default {
  components: {
    "vue-timepicker": VueTimePicker,
  },
  data: () => ({
    rest_time: {
      hh: "10",
      mm: "20",
      ss: "20",
    },
  }),
  watch: {
    rest_time: {
      handler(newValue) {
        this.$refs.timePicker.value = newValue;
      },
      immediate: true,
    },
  },
  methods: {
    change() {
      this.rest_time = {
        hh: "10",
        mm: "20",
        ss: "40",
      };

      // 手动更新时间选择器组件的值
      this.$refs.timePicker.value = this.rest_time;
    },
  },
};
</script>