- Use Array.prototype.every() to check if all the elements of the array are the same as the first one.
- Elements in the array are compared using the strict comparison operator, which does not account for NaN self-inequality.
//#Source https://bit.ly/2neWfJ2 const allEqual = arr => arr.every(val => val === arr); console.log(allEqual([1, 2, 3, 4, 5, 6])); console.log(allEqual([12, 12, 12, 12]));
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