【问题标题】:How to ClearInterval in Vuex如何在 Vuex 中清除间隔
【发布时间】:2020-11-03 23:58:46
【问题描述】:

我正在尝试清除我的 vuex 商店中的时间间隔,但它不起作用。

在 startCounter 中,我检查我的计数是否等于 100 以清除 stopCounter 中的间隔

clearInterval(this.myCounterInterval);

这是我的代码,谢谢。

import Vue from "vue";
import Vuex from "vuex";
import videos from "@/models/videos";

Vue.use(Vuex);

export default new Vuex.Store({
  state: {
    count: 0,
    totalTime: 20,
    myCounterInterval: 0,
    visible: false,
    show: false,
    videos: {
      type: Array,
      default: () => videos
    }
  },
  mutations: {
    visibleProgressBar (state) {
      state.visible = true;
    },
    invisibleProgressBar (state) {
      state.visible = false;
    },
    showModal (state) {
      state.show = true;
    },
    hideModal (state) {
      state.show = false;
    },
    countDown (state) {
      if(state.totalTime >= 1) {
        state.totalTime--;
        state.count += 5;
      } else {
        state.totalTime = 0;
        state.count = 0;
        return;
      }
    },
    setCounter (state, newCount) {
      state.count = newCount;
    },
    stopCounter (state) {
      clearInterval(this.myCounterInterval);
      state.count = 0;
    },
    setVideos (state) {
      state.videos;
    }
  },
  actions: {
    startCounter ({ state, commit }) {

      this.myCounterInterval = commit("setCounter", setInterval(() => {
        commit("countDown");

        if(state.count === 100) {
          commit("stopCounter");
        }
      }, 1000));
    },
    stopCounter ({ commit }) {
      commit("stopCounter");
    },
    showProgressBar ({ commit }) {
      commit("visibleProgressBar");
    },
    hideProgressBar ({ commit }) {
      commit("invisibleProgressBar");
    },
    showModal ({ commit }) {
      commit("showModal");
    },
    hideModal ({ commit }) {
      commit("hideModal");
    },
    getVideos ({ commit }) {
      commit("setVideos");
    }
  },
  modules: {}
});

【问题讨论】:

  • 在这种情况下,您是不是误用了clearInterval(this.myCounterInterval);,而您的意思是clearInterval(state.myCounterInterval);

标签: vue.js vuex setinterval clearinterval


【解决方案1】:

你可以这样做

stopCounter (state) {
    state.myCounterInterval = null
    ...
},

这样设置间隔

行动

startCounter ({ state, commit }) {
      commit("setCounter")
}

变异

setCounter (state) {
   state.count = 0;
   state.myCounterInterval = setInterval(() => {
      your logic
   }, 1000))
},

【讨论】:

  • 谢谢,不过好像也不起作用,可能是我设置间隔的方式?
  • 我无法在突变中执行我的逻辑,因为我需要执行 commit("countDown");在 setInterval
  • 在区间内从 countDown 进行所有突变有什么问题?
【解决方案2】:

您需要删除此分配:

this.myCounterInterval = commit("setCounter", setInterval(() => {

,然后提交:

commit("setCounter", setInterval(() => {

“setCounter”突变将您的计数器分配给 state.count:

setCounter (state, newCount) {
  state.count = newCount;
}

,然后你可以删除这个区间:

stopCounter (state) {
  clearInterval(state.count);
}

这个适合我

【讨论】:

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