How to use the vue timeline component

<template>
    <ul class="timeline-wrapper">
        <li class="timeline-item" v-for="t in timelineList" :key="t.id">
        <div class="timeline-box">
            <div class="out-circle">
                <div class="in-circle"></div>
            </div>
            <div class="long-line"></div>
        </div>
        <div class="timeline-content">
            <div class="timeline-date">{{t.date}}</div>
            <div class="timeline-title">{{ t.title}}</div>
            <div class="timeline-desc">{{ t.content}}</div>
        </div>
    </li>
    </ul>

</template>

<script type="text/babel">
    import Vue from 'vue'
    export default Vue.component('Timeline',{
        name: "Timeline",
        props: {
            timelineList: {
                type: Array,
                default: () => {
                    return []
                }
            }
        }
    })
</script>

<style scoped lang="scss">
    ul.timeline-wrapper {
        list-style: none;
        margin: 0;
        padding: 0;
    }

    /* Timeline */
    .timeline-item {
        position: relative;

        .timeline-box {
            text-align: center;
            position: absolute;

            .out-circle {
                width: 16px;
                height: 16px;
                background: rgba(14, 116, 218, 0.1);
                box-shadow: 0px 4px 12px 0px rgba(0, 0, 0, 0.1);
                /*opacity: 0.1;*/
                border-radius: 50%;
                display: flex;
                align-items: center;

                .in-circle {
                    width: 8px;
                    height: 8px;
                    margin: 0 auto;
                    background: rgba(14, 116, 218, 1);
                    border-radius: 50%;
                    box-shadow: 0px 4px 12px 0px rgba(0, 0, 0, 0.1);
                }
            }

            .long-line {
                width: 2px;
                height: 98px;
                background: rgba(14, 116, 218, 1);
                box-shadow: 0px 4px 12px 0px rgba(0, 0, 0, 0.1);
                opacity: 0.1;
                margin-left: 8px;
            }
        }

        .timeline-content {
            box-sizing: border-box;
            margin-left: 20px;
            height: 106px;
            padding: 0 0 0 20px;
            text-align: left;
            margin-bottom: 30px;

            .timeline-title {
                font-size: 14px;
                word-break: break-all;
                margin-bottom: 16px;
                color: #333;
                font-weight: 500;
                /*display: inline;*/
            }

            .timeline-date {
                font-size: 16px;
                color: #333;
                font-weight: 500;
                margin-bottom: 16px;
            }
            .timeline-desc {
                font-size: 14px;
                color: #999999;
            }
        }

    }


    .timeline-item:last-of-type .timeline-content {
        margin-bottom: 0;
    }
</style>

// Parent component reference <timeline :timeline-list="dongtai"></timeline>

// Import components. Remember to use your own component path. import Timeline from "./Timeline";
//Declare the array dongtai:[] in the object returned by data()