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並前往https://www.thiscodeworks.com/javascript-array-push-if-does-not-exist-stack-overflow-javascript/602287445f6d160014b1a3bc

javascript - Array.push() if does not exist? - Stack Overflow

javascript - Array.push() if does not exist? - Stack Overflow · var item = {name: "tom", text: "tasty"} · var array = [{}] · if (!array.find(o => o ...

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