24 lines
749 B
Markdown
24 lines
749 B
Markdown
### cleanObj
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Removes any properties except the ones specified from a JSON object.
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Use `Object.keys()` method to loop over given JSON object and deleting keys that are not `include`d in given array.
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Also if you give it a special key (`childIndicator`) it will search deeply inside it to apply function to inner objects too.
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```js
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const cleanObj = (obj, keysToKeep = [], childIndicator) => {
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Object.keys(obj).forEach(key => {
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if (key === childIndicator) {
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cleanObj(obj[key], keysToKeep, childIndicator);
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} else if (!keysToKeep.includes(key)) {
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delete obj[key];
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}
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});
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return obj;
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};
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/*
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const testObj = {a: 1, b: 2, children: {a: 1, b: 2}}
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cleanObj(testObj, ["a"],"children") // { a: 1, children : { a: 1}}
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*/
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```
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