how the TotalComment, requested through get is assigned to totalComment in data

export default {

    data() {

        return {
            contentId:1,
            focusflag:true,
            totalComment:TotalComment,
            reply:"",
            name:"",
            articleContent:"",
            active:"",
            commentList:commentList,
            goodCommentList:goodCommentList,
            totalComment:TotalComment,
        }
    },
    
    methods: {
    //
        getAllComment:function () {
            Axios({
                // `url`  URL
                url:devhttpUrl + "/content/comments/all?contentId="+1+"&pageNo=1&pageSize=20&totalItems=-1",
                // `method` 
                method: "get", //  get
                headers: {"Authorization":"Bearer "+ token },
                // data:postData
            }).then(function (result) {
                if(result.data.errCode==0){
                    var dataobj=result.data.data.items;
                    TotalComment=result.data.data.totalItems;
                    console.log(TotalComment)
                    for(var i=0;i<dataobj.length;iPP){
                        commentList.push({id:dataobj[i].id,name:dataobj[i].userNickName,time:dataobj[i].creationTime,replyNo:dataobj[i].replyCount,cool:dataobj[i].likeCount,content:dataobj[i].content})
                    }
                }
                else{
                    Toast(result.data.errMsg);
                }
                console.log(TotalComment)
                //that.$set(that,"totalComment",TotalComment);
            }).catch(function (error) {
                console.log(error)
            })

}