vuejs父子组件之间数据交互详解

export default {
 name: 'comment',
 props: ['issue','index'],
 data () {
 return {
  comment: '',
 }
 },
 components: {},
 methods: {
 removeComment: function(index,cindex) {
  this.$emit('removeComment', {index:index, cindex:cindex});
 },
 saveComment: function(index) {
  this.$emit('saveComment', {index: index, comment: this.comment});
  this.comment="";
 }
 },
 //hook 
 created: function () {
 //get init data

 }

}

 removeComment: function(data) {
  var index = data.index, cindex = data.cindex;
  var issue = this.issue_list[index];
  var comment = issue.comments[cindex];
  axios.get('comment/delete/cid/'+comment.cid)
  .then(function (resp) {
  issue.comments.splice(cindex,1);
  });
 },
 saveComment: function(data) {
  var index = data.index;
  var comment = data.comment;
  var that = this;
  var issue =that.issue_list[index];
  var data = {
  iid: issue.issue_id,
  content: comment
  };

  axios.post('comment/save/',data)
  .then(function (resp) {
  issue.comments=issue.comments||[];
  issue.comments.push({
   cid: resp.data,
   content: comment
  });
  });
  
  //clear comment input
  this.comment="";
 }

 },