Home Arrow Icon Knowledge base Arrow Icon Global Arrow Icon how can I dynamically update the initial state after the page loads
    Vue.js nextTick Vuex Mutation Action forceUpdate key attribute dynamic state update


how can I dynamically update the initial state after the page loads


To dynamically update the initial state after the page loads, you can use the following methods:

1. Using Vue's `nextTick` Method:
- Update State After Page Load:
- Use `nextTick` to ensure that the DOM updates are applied after the state change.
- This ensures that the updated state is reflected in the DOM.

javascript
   import { nextTick } from 'vue';

   // Update state after page load
   async function updateState() {
     // Perform any necessary actions to update the state
     await nextTick();
     // Now the DOM is updated
   }
   

2. Using Vuex's `Mutation` and `Action`:
- Update State Dynamically:
- Use Vuex's `Mutation` and `Action` to update the state dynamically.
- This ensures that the state changes are properly tracked and updated in the Vuex store.

javascript
   // Vuex Module
   @Mutation
   public SET_HERE_STATUS(status: boolean): void {
     this.is_here = status;
   }

   // Vuex Action
   @Action
   public async setHereStatus() {
     await axios.get('api/member_status').then((response) => {
       if (response.here_status) {
         this.SET_HERE_STATUS(true);
       } else {
         this.SET_HERE_STATUS(false);
       }
     });
   }
   

3. Using Vue's `forceUpdate` Method:
- Force Update Component:
- Use Vue's `forceUpdate` method to manually trigger an update of the component.
- This ensures that the component is re-rendered with the updated state.

javascript
   // Vue Component
   export default {
     methods: {
       forceUpdate() {
         this.$forceUpdate();
       }
     }
   }
   

4. Using Vue's `key` Attribute:
- Update Component with Key:
- Use Vue's `key` attribute to inform Vue that a particular component is connected to a particular piece of data.
- If the `key` changes, Vue understands that it needs to delete the previous component and generate a new one.

html
   <!-- Vue Component -->
   <div :key="someKey">
     <!-- Component content -->
   </div>
   

By using these methods, you can effectively update the initial state after the page loads, ensuring that the state changes are properly tracked and reflected in the DOM.

Citations:
[1] https://vuejs.org/guide/essentials/reactivity-fundamentals
[2] https://stackoverflow.com/questions/56626549/how-to-set-the-initial-state-in-vuex-dynamically-using-if-when-initializing
[3] https://blog.logrocket.com/correctly-force-vue-component-re-render/
[4] https://github.com/vuejs/vuex/issues/1118
[5] https://reintech.io/blog/working-with-dynamic-components-in-vuejs