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[英]How to remove a property from an object and/or array if the value is null, undefined or empty?
[英]How to remove null, undefined value from javascript object
這是我的對象。 我正在嘗試刪除空數組、空字符串、null、未定義。
let result = {
a : [],
b: undefined,
c: null,
d: NaN,
e: {},
f:{test: undefined, tes1: null,tes2:NaN},
g:{name :{x:undefined, y:"s", z: null}},
x:"sujon",
y:"",
}
現在,我只能使用此代碼從對象中刪除未定義的值;
const removeEmpty = (obj) => {
Object.keys(obj).forEach(key => {
if (obj[key] && typeof obj[key] === 'object') removeEmpty(obj[key]);
else if (obj[key] === undefined) delete obj[key];
});
return obj;
};
let res = removeEmpty(result)
console.log(res)
我的預期結果是這樣的:
let result = {
g:{name :{y:"s"}},
x:"sujon",
}
我怎樣才能得到我的預期結果?
在遞歸調用之后,如果結果是一個空對象(沒有自己的屬性),將其刪除:
let result = { a : [], b: undefined, c: null, d: NaN, e: {}, f:{test: undefined, tes1: null,tes2:NaN}, g:{name :{x:undefined, y:"s", z: null}}, x:"sujon", y:"", z:0, } const removeEmpty = (obj) => { Object.keys(obj).forEach(key => { if (obj[key] && typeof obj[key] === 'object') removeEmpty(obj[key]); if ( (!obj[key] && obj[key] !== 0) || (typeof obj[key] === 'object' && Object.keys(obj[key]).length === 0) ) { delete obj[key]; } }); return obj; }; let res = removeEmpty(result) console.log(res)
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