Vuejs component does not render immediately - html

Question

I have a vue app and a component. The app simply takes input and changes a name displayed below, and when someone changes the name, the previous name is saved in an array. I have a custom component to display the different list items. However, the component list items do not render immediately. Instead, the component otems render as soon as I type a letter into the input. What gives? Why would this not render the list items immediately?
(function(){
var app = new Vue({
el: '#app',
components: ['name-list-item'],
data: {
input: '',
person: undefined,
previousNames: ['Ian Smith', 'Adam Smith', 'Felicia Jones']
},
computed: {
politePerson: function(){
if(!this.person) {
return 'Input name here';
}
return "Hello! To The Venerable " + this.person +", Esq."
}
},
methods: {
saveInput: function(event){
event.preventDefault();
if(this.person && this.previousNames.indexOf(this.person) === -1) {
this.previousNames.push(this.person);
}
this.setPerson(this.input);
this.clearInput();
},
returnKey: function(key) {
return (key + 1) + ". ";
},
clearInput: function() {
this.input = '';
},
setPerson: function(person) {
this.person = person;
}
}
});
Vue.component('name-list-item', {
props: ['theKey', 'theValue'],
template: '<span>{{theKey}} {{theValue}}</span>'
});
})()
And here is my HTML.
<div id="app">
<div class="panel-one">
<span>Enter your name:</span>
<form v-on:submit="saveInput">
<input v-model="input"/>
<button #click="saveInput">Save</button>
</form>
<h1>{{politePerson}}</h1>
</div>
<div class="panel-two">
<h3>Previous Names</h3>
<div>
<div v-for="person, key in previousNames" #click='setPerson(person)'><name-list-item v-bind:the-key="key" v-bind:the-value="person" /></div>
</div>
</div>
</div>

Answer 1

You are not defining your component until after you have instantiated your Vue, so it doesn't apply the component until the first update.