当二级联动比如选择国家的时候，希望选中一个国家的时候后面城市默认选中第一个城市，则给国家的select加一个@change事件就可以了
rush:xhtml;">
所在区域
rush:xhtml;">
data
countryName:{},cityName:"请选择城市",area:[
{
"country":"美国","city":[
"纽约","洛杉矶","旧金山","西雅图","波士顿","休斯顿","圣地亚哥","芝加哥","其它",]
},{
"country":"加拿大","city":[
"温哥华","多伦多","蒙特利尔","其它"
]
},{
"country":"澳大利亚","city":[
"悉尼","墨尔本",{
"country":"新加坡","city":[
"新加坡"
]
},/*{
"country":"中国","city":[
"北京市",*/
],
methods:
rush:xhtml;">
selectCountry(value){
this.cityName=this.countryName.city[0];
},
以上这篇vue select二级联动第二级默认选中第一个option值的实例就是小编分享给大家的全部内容了，希望能给大家一个参考，也希望大家多多支持编程之家。
