element ui tabs 标签页支持展开收起修改

data() {
  return {
    activeTab: 'situation1',
    tabPosition: 'right', //**
    checked: '',
    currentLab: {
      index: -1,
      isActive: false
    }
  }
},

methods: {
  //// tabs 切换点击 
  legendClick(tab, event) {
    let self = this;
    var tab_content = document.querySelectorAll(".com-resource-legend .el-tabs__content");
    if (self.currentLab.index == tab.index) {
      tab_content[0].style.display == 'none'|| ''? tab_content[0].style.display = 'block' : tab_content[0].style.display = 'none';
    }
    if (self.currentLab.index != tab.index) {
      self.currentLab.index = tab.index;
      tab_content[0].style.display = 'block';
    }
}