[英]Sort JavaScript Object by value and then key(alphabetically) if multiple keys has same value. Return sorted keys in order
[英]Return JavaScript object keys that share the same value without knowing key name?
說我有一個簡單的JavaScript對象:
{"omar":"espn.com","omar1":"espn1.com","omar3":"espn.com"}
如何在不知道密鑰名稱的情況下返回共享"espn.com"
的所有密鑰?
在這種情況下,僅應返回"omar"
和"omar3"
。
只需使用Object.keys
和Array#filter
枚舉所需屬性即可。
var o = {"omar":"espn.com","omar1":"espn1.com","omar3":"espn.com"}; var matched = Object.keys(o).filter(function(key) { return o[key] === 'espn.com'; }); console.log(matched);
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