Created
July 31, 2020 08:03
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Discover key in js object
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| let cache = new Set(); | |
| let discoverIn = function(obj, keyToFind, previousPath = "") { | |
| if(obj === null || typeof obj !== "object") { | |
| return; | |
| } | |
| if (cache.has(obj)) return; | |
| cache.add(obj); | |
| const keys = Object.keys(obj); | |
| for (let k of keys) { | |
| // ignore __ leading keys | |
| if (k.startsWith('__')) continue; | |
| if (k === keyToFind) { | |
| console.log("path : ", previousPath + "." + k); | |
| break; | |
| } | |
| discoverIn(obj[k], keyToFind, previousPath + "." + k); | |
| } | |
| } | |
| discoverIn(form, "keytofind"); |
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