您好,我目前遇到这样的问题:如果其中的所有值均为null或0,则检查具有另一个嵌套对象的对象
我的对象如下:
{
"city":0,
"road":{
"max":null,
"min":null
},
"size":{
"max":null,
"min":null
},
"type":null,
"ward":0,
"floor":null,
"price":{
"max":null,
"min":null
},
"street":0,
"toilet":null,
"balcony":null,
"bedroom":null,
"district":0,
"frontend":{
"max":null,
"min":null
},
"direction":null,
"living_room":null
}
我需要检查其中的每个单个值是否为0或null,如果所有值均为0或null则返回 true ,如果其中任何一个不同于以下值,则返回 false null或0
我不能使用:
Object.values(object).every(i =>(i === null || i ===''))
它返回False,因为嵌套的对象仍然认为与0和null不同的值
如果条件一次检查每个值,我不想写超长
无论如何,有没有要遍历该对象及其嵌套对象以进行检查?
答案 0 :(得分:1)
一个(不确定的)选项是将JSON.stringify
与回调一起使用,并且每当找到0或null以外的值时,就设置一个标志:
const obj = {
"city":0,
"road":{
"max":null,
"min":null
},
"size":{
"max":null,
"min":null
},
"type":"sell",
"ward":0,
"floor":null,
"price":{
"max":null,
"min":null
},
"street":0,
"toilet":null,
"balcony":null,
"bedroom":null,
"district":0,
"frontend":{
"max":null,
"min":null
},
"direction":null,
"living_room":null
};
let allZeroNull = true;
JSON.stringify(obj, (key, val) => {
if (typeof val !== 'object' && val !== 0) {
allZeroNull = false;
}
return val;
});
console.log(allZeroNull);
或者,通过短路手动操作:
const obj = {
"city":0,
"road":{
"max":null,
"min":null
},
"size":{
"max":null,
"min":null
},
"type":"sell",
"ward":0,
"floor":null,
"price":{
"max":null,
"min":null
},
"street":0,
"toilet":null,
"balcony":null,
"bedroom":null,
"district":0,
"frontend":{
"max":null,
"min":null
},
"direction":null,
"living_room":null
};
const isAllZeroNull = (item) => {
if (typeof item === 'object' && item !== null) {
for (const val of Object.values(item)) {
if (!isAllZeroNull(val)) {
return false;
}
}
} else if (item !== 0 && item !== null) {
return false;
}
return true;
};
console.log(isAllZeroNull(obj));
答案 1 :(得分:1)
您可以采用迭代和递归的方法。
function check(object) {
return Object.values(object).every(v => v && typeof v === 'object'
? check(v)
: v === 0 || v === null
);
}
var data0 = { city: 0, road: { max: null, min: null }, size: { max: null, min: null }, type: "sell", ward: 0, floor: null, price: { max: null, min: null }, street: 0, toilet: null, balcony: null, bedroom: null, district: 0, frontend: { max: null, min: null }, direction: null, living_room: null },
data1 = { city: 0, road: { max: null, min: null }, size: { max: null, min: null }, type: null, ward: 0, floor: null, price: { max: null, min: null }, street: 0, toilet: null, balcony: null, bedroom: null, district: 0, frontend: { max: null, min: null }, direction: null, living_room: null };
console.log(check(data0)); // false because of type: "sell"
console.log(check(data1)); // true
答案 2 :(得分:1)
您可以创建一个函数(fn
),该函数使用Object.values()
来获取值的数组,并使用Array.every()
进行迭代;如果该值是对象,则使用fn
在上面:
const fn = data =>
Object.values(data)
.every(v => {
if(v === null || v === 0) return true;
return typeof v === 'object' ? fn(v) : false;
})
const data = {"city":0,"road":{"max":null,"min":null},"size":{"max":null,"min":null},"type":"sell","ward":0,"floor":null,"price":{"max":null,"min":null},"street":0,"toilet":null,"balcony":null,"bedroom":null,"district":0,"frontend":{"max":null,"min":null},"direction":null,"living_room":null}
const result = fn(data)
console.log(result)