element ui 多语言切换时表头不切换的解决方法

用最简单的方法解决最简单的问题：

将tableColumns列的定义写在computed内

computed:{
    tableColumns(){
         const  tableColumns=[
        {type: "index" },
        {align: "center",label:this.$t('releaseTime0297'),width: 150},
        {align: "left",label:this.$t('headline005'),minWidth: 150},
        {align: "left",label:this.$t('issuer564'),width: 150},
        {align: "center",label:this.$t('LastUpdated565'),width: 150},
        {align: "center",label:this.$t('LastUpdated0298'),width: 150},
        {align: "left",label:this.$t('region0236'),width: 160}
      ]
        return tableColumns
      }
    },

over!!