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並前往https://medium.com/programming-essentials/how-to-know-if-an-array-is-not-empty-in-javascript-1aefa54ee138

How to Know If an Array is Not Empty in JavaScript - Medium

To check if an array is not empty we simply test if the length property is not 0 . const arr = [];if(arr.length !== 0) { console.log('not empty') }.

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