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並前往https://www.geeksforgeeks.org/how-to-get-the-first-key-name-of-a-javascript-object/

How to get the first key name of a JavaScript object

innerHTML = JSON.stringify(obj);. function GFG_Fun() {. down.innerHTML = "The first key = '" +. Object.keys(obj)[0] + "' < br > Value = '".

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