小程序bindtap参数传递

小程序参数中data-xxx 后面的参数不能用驼峰

正常
wxml

<view class='content' data-gid='{{item.gId}}' bindtap='openChatView'>

js

openChatView: function (event) {
    var $this = this;
    console.log(event.currentTarget.dataset.gid)
  },

异常

wxml

<view class='content' data-gId='{{item.gId}}' bindtap='openChatView'>

js

openChatView: function (event) {
    var $this = this;
    console.log(event.currentTarget.dataset.gId)
  },