vue update when computed change v-for code example
Example 1: vue computed
var vm = new Vue({
el: '#example',
data: {
message: 'Hello'
},
computed: {
// a computed getter
reversedMessage: function () {
// `this` points to the vm instance
return this.message.split('').reverse().join('')
}
}
})
Example 2: vue add watcher
vm.$watch('person.name.firstName', function(newValue, oldValue) {
alert('First name changed from ' + oldValue + ' to ' + newValue + '!');
});