textarea格式问题

<rich-text class="rich-text" :nodes="dataList.attentionContent | isText"></rich-text>

filters: {
            isText(html) {
                if (html) {
                    let arr=[]
                    html.split('\n').forEach(item=>arr.push(`${item.trim()}`));
                    let newContent = arr.join('<br>')
                    return newContent;
                }
            },
        },