How to use 'how to return the first value of this array' in JavaScript

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332function getFirst(array) {
333 if (!empty(array)) {
334 return array[0];
335 }
336 return null;

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37function getFirstValue(arr) {
38 if (arr && arr.length > 0 && arr[0].value) {
39 return arr[0].value;
40 }

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