Vue.js: watch array length
Use the watch section in your vm creation:
var vm = new Vue({ el: 'body', data: { items: [] }, computed: { item_length: function () { return this.battle_logs.length; } }, watch: { items: { handler: function () { console.log('caught!'); }, deep: true } }});
Or watch a computed length attribute:
vm.$watch('item_length', function(newVal, oldVal) { console.log('caught!');});