js compare lists
// compare two arrays where order might differ
const array1 = [1,2,3,4,5];
const array2 = [3,4,1,2,5];
const compareArrays = (array1, array2) => {
return (
array1.length === array2.length &&
array1.every((el) => array2.includes(el));
);
};
compareArrays(array1, array2); // truejavascript compare arrays
Array.prototype.equals = function(arr2) {
return (
this.length === arr2.length &&
this.every((value, index) => value === arr2[index])
);
};
[1, 2, 3].equals([1, 2, 3]); // true
[1, 2, 3].equals([3, 6, 4, 2]); // falsehow to compare elements in an array
for (let i = 0; i < a.length; i++) {
for (let k = i + 1; k < a.length; k++) {
if (a[i] != a[k]) {
//do stuff
}
}
}array compare detailed
var a1 = [1,2,3];
var a2 = [1,2,3];
console.log(a1==a2); // Returns false
console.log(JSON.stringify(a1)==JSON.stringify(a2)); // Returns trueCopyright © 2021 Codeinu
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