Don't remove ↓ -->
4.2 app.js...(function (Vue) {
var items = [
{
id:1,
content:'vue',
completed:true
},
{
id:2,
content:'js',...completed:false
},
{
id:3,
content:'node',
completed:true
},
{
id:4,
content:'ts',
completed:false...item.completed);
break;
case 'completed' : return this.items.filter(item => item.completed);
break;
default