vue组件引入

/src/route/index.js
import Demo2 from '@/pages/demo2/index.vue'
 {
    	path : '/demo2',
    	name : 'demo2',
    	component: Demo2
    },

/src/pages/demo1/index.vue
    <template>
	<div>

		<div>自定义组件</div>

		<div>--------------------</div>
		<countdown></countdown>
	</div>

    </template>
    <script>
	import countdown from '@/components/countdown.vue'
	export default{
		data(){
			return {

			}
		},
		components : {
			countdown
		},

	}
    </script>

/src/components/countdown.vue
    <template>
        <p>{{time}}</p>
    </template>

    <script>
	export default{
		data(){
			return {
				time: 10,
			}
		},
		mounted : function(){
			let vm = this;
			let t = setInterval(function(){
				vm.time--;
				if(vm.time == 0){
					clearInterval(t);
					vm.$emit('end');
				}
			},1000)
		}

	}
    </script>