How to properly watch an object in vue.js?

by tressie.damore , in category: Javascript , 17 days ago

How to properly watch an object in vue.js?

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1 answer

by aniya.jaskolski , 16 days ago

@tressie.damore 

In Vue.js, you can watch for changes on a specific object using a watch option in your component. The watch option allows you to observe changes on a specific property and take action when the property changes.


Here's an example of how to properly watch an object in Vue.js:

  1. Define the object in your data property:
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data() {
  return {
    myObject: {
      prop1: 'value1',
      prop2: 'value2'
    }
  }
}


  1. Create a watch option in your component:
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watch: {
  myObject: {
    handler(newVal, oldVal) {
      // Do something when myObject changes
      console.log('myObject changed: ', newVal);
    },
    deep: true // Watch for nested properties inside myObject
  }
}


In this example, we're watching for changes on the myObject property. The handler function will be called whenever myObject changes, and the new and old values of myObject will be passed as arguments to the handler function.


By setting the deep option to true, we are also watching for changes on nested properties inside myObject.


With this setup, you can properly watch for changes on an object in Vue.js and take appropriate actions when the object changes.