目前我有以下对象数组
obj = [
{
"id":28,
cities: [
{
cityTypes: "AA",
citySource: "sdsf"
},
{
cityTypes: "BB",
citySource: "sdsgf"
},
{
cityTypes: "CC",
citySource: "fgsdfgd"
}
]
},
{
"id":56,
cities: [
{
cityTypes: "DD",
citySource: "sdsf"
},
{
cityTypes: "EE",
citySource: "sdsgf"
},
{
cityTypes: "FF",
citySource: "fgsdfgd"
}
]
},
{
"id":89,
cities: [
{
cityTypes: "GG",
citySource: "sdsf"
},
{
cityTypes: "HH",
citySource: "sdsgf"
},
{
cityTypes: "II",
citySource: "fgsdfgd"
}
]
}
]
我需要搜索 cityTypes
的特定值存在于整个 Object
中。
假设,我需要搜索 cityTypes = BB
如果BB
存在于整个对象中,返回true
如果BB
没有被预设,返回false
。
这个是我试过的,好像不行。
for(let k=0; k<obj.length; k++){
if(obj[k].cities){
let cityObj = obj[k].cities;
for(let city in cityObj){
city.cityTypes !== "BB" ? "true" : "false"
}
}
}
实现这一目标的正确方法是什么?
最佳答案
您可以在另一个 .some
中使用 .some
:
const obj=[{"id":28,cities:[{cityTypes:"AA",citySource:"sdsf"},{cityTypes:"BB",citySource:"sdsgf"},{cityTypes:"CC",citySource:"fgsdfgd"}]},{"id":56,cities:[{cityTypes:"DD",citySource:"sdsf"},{cityTypes:"EE",citySource:"sdsgf"},{cityTypes:"FF",citySource:"fgsdfgd"}]},{"id":89,cities:[{cityTypes:"GG",citySource:"sdsf"},{cityTypes:"HH",citySource:"sdsgf"},{cityTypes:"II",citySource:"fgsdfgd"}]}];
console.log(
obj.some(({ cities }) => cities.some(({ cityTypes }) => cityTypes === 'BB'))
);
console.log(
obj.some(({ cities }) => cities.some(({ cityTypes }) => cityTypes === 'foobar'))
);
关于javascript - 在对象的子数组中搜索 - JavaScript,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/52217029/