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並前往https://stackoverflow.com/questions/983267/how-to-access-the-first-property-of-a-javascript-object

How to access the first property of a Javascript object?

var obj = { first: 'someVal' }; obj[Object.keys(obj)[0]]; //returns 'someVal' Object.values(obj)[0]; // returns 'someVal'. Using this you can access also ...

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