1.用hover切換頁面 ，click跳轉到更多
2.先調接口獲取到國家政策和地方政策的數據，定義兩個變量接收返回的數據
3.在mounted中調用hover觸發的方法
最后獻上代碼（只要將拿到的值賦值給newData就行了）
nextTick(){
this.$nextTick(() => {
this.$refs.navTabs.$refs.nav.$nextTick(() => {
// 此時tab的nav才渲染dom 否則拿不到el-tabs__item
var target = document.getElementsByClassName("el-tabs__item");
let that = this;
for (let i = 0; i < target.length; i++) {
target[i].addEventListener("mouseover", () => {
that.$refs.navTabs.handleTabClick(1, String(i));
if(i==0){
that.newData=that.countryData
console.log("this.countryData",that.countryData)
}else if(i==1){
that.newData=that.localData
console.log("this.localData",that.localData)
}
});
}
});
});
},