perform an action when a data changes in vue

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showing results for - "perform an action when a data changes in vue"
Moritz
28 Jan 2020
1var vm = new Vue({
2  el: '#demo',
3  data: {
4    firstName: 'Foo',
5    lastName: 'Bar',
6    fullName: 'Foo Bar'
7  },
8  watch: {
9    firstName: function (val) {
10      this.fullName = val + ' ' + this.lastName
11    },
12    lastName: function (val) {
13      this.fullName = this.firstName + ' ' + val
14    }
15  }
16})
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