how to check if array has same values javascript code example
Example 1: check if array has same values javascript
const allEqual = arr => arr.every(v => v === arr[0]);
allEqual([1,1,1,1]);
Example 2: check array values equal js
[1,1,1,1].every( (val, i, arr) => val === arr[0] )
Example 3: js check if array of objects contains duplicates
const arrayOfObjCopy = [...arrayOfObj];
Object.keys(arrayOfObjCopy).forEach((key) => {
arrayOfObjCopy[key] = JSON.stringify(arrayOfObjCopy[key]);
});
const arrayOfObjhasDuplicates = uniq(arrayOfObjCopy).length != arrayOfObjCopy.length;