How to listen for 'props' changes

Question

In the VueJs 2.0 docs I can\'t find any hooks that would listen on props changes.

Does VueJs have such hooks like onPropsUpdated() or simi

Answer 1

You can watch props to execute some code upon props changes:

new Vue({
  el: '#app',
  data: {
    text: 'Hello'
  },
  components: {
    'child' : {
      template: `
{{ myprop }}
`,
      props: ['myprop'],
      watch: { 
      	myprop: function(newVal, oldVal) { // watch it
          console.log('Prop changed: ', newVal, ' | was: ', oldVal)
        }
      }
    }
  }
});

  
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