22 lines
685 B
Markdown
22 lines
685 B
Markdown
### Clean JSON object
|
|
|
|
Use `Object.keys()` method to loop over given json object and deleting keys that are not `include`d in given array.
|
|
also if you give it a special key(`childIndicator`) it will search deeply inside it to apply function to inner objects too.
|
|
|
|
```js
|
|
const cleanObj = (obj, keysToKeep = [], childIndicator) => {
|
|
Object.keys(obj).forEach(key => {
|
|
if (key === childIndicator) {
|
|
cleanObj(obj[key], keysToKeep, childIndicator);
|
|
} else if (!keysToKeep.includes(key)) {
|
|
delete obj[key];
|
|
}
|
|
})
|
|
}
|
|
/*
|
|
testObj = {a: 1, b: 2, children: {a: 1, b: 2}}
|
|
cleanObj(testObj, ["a"],"children")
|
|
console.log(testObj)// { a: 1, children : { a: 1}}
|
|
*/
|
|
```
|