Detect Changes in JSON File Using Vue.js

Question

Detect Changes in JSON File Using Vue.js

One innovative idea involves monitoring changes in a JSON file and automatically updating the v-if condition when a value is modified.

<div id="app">
 <div v-if="content == 'one'">
   <p>Content one</p>
 </div>
 <div v-else-if="content == 'two'">
   <p>Content two</p>
 </div>
</div>

The challenging aspect arises when, after building, I need to update the JSON file and have it automatically impact what will be displayed.

new Vue({
  el: "#app",
  data: {
   content: ''
  },
  methods: {
    // import JSON and assign value to this.content based on the imported data
        // The value can now be either 'one' or 'two'
  }
})

javascript vue.js webpack

Answer 1

Answer №1

Monitoring changes directly inside a json file is not feasible. One way to achieve this is by assigning the json data to a reactive property and monitoring changes through that. Make sure to update the reactive property whenever the JSON is modified in order to trigger the watcher.

new Vue({
  el: "#app",
  data: {
   content: ''
  },
  watch: {
    content: function (val) {
      // perform actions when content changes
    },
    },
  methods: {
    importJson() {
            // import the json file and assign its contents to 'content'
    },
    saveJson(newJSON) {
        this.content = newJSON
      // Implement logic to save the json data back to the json file
    }
  }
})

It's important to note that modifications to a JSON file may not be permanent.

Answer 2

Monitoring changes directly inside a json file is not feasible. One way to achieve this is by assigning the json data to a reactive property and monitoring changes through that. Make sure to update the reactive property whenever the JSON is modified in order to trigger the watcher.

new Vue({
  el: "#app",
  data: {
   content: ''
  },
  watch: {
    content: function (val) {
      // perform actions when content changes
    },
    },
  methods: {
    importJson() {
            // import the json file and assign its contents to 'content'
    },
    saveJson(newJSON) {
        this.content = newJSON
      // Implement logic to save the json data back to the json file
    }
  }
})

It's important to note that modifications to a JSON file may not be permanent.

Answer 3

Answer №2

I successfully resolved the issue using axios. :)

methods: {
        fetchData () {
          axios.get('../static/client/data.json').then(response => {
            console.log(response.data)
            this.clientData = response.data
          })
        }
      },
      created () {
        this.fetchData()
      }

Now, if you modify the JSON file in the 'dist' directory post build and refresh the browser, it will display the updated value.

Answer 4

I successfully resolved the issue using axios. :)

methods: {
        fetchData () {
          axios.get('../static/client/data.json').then(response => {
            console.log(response.data)
            this.clientData = response.data
          })
        }
      },
      created () {
        this.fetchData()
      }

Now, if you modify the JSON file in the 'dist' directory post build and refresh the browser, it will display the updated value.

Detect Changes in JSON File Using Vue.js

Answer №1

Answer №2

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