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comparing two arrays in javascript returning differences Code Example
javascript difference between two arrays 
let difference = arr1.filter(x => !arr2.includes(x));
Source: stackoverflow.com
compare two arrays and return the difference javascript 
let difference = arr1
                 .filter(x => !arr2.includes(x))
                 .concat(arr2.filter(x => !arr1.includes(x)));
comparing two arrays in javascript returning differences 
function arrayDiff (a1, a2) {
    var a = [], diff = [];
    for (var i = 0; i < a1.length; i++) {
        a[a1[i]] = true;
    }
    for (var i = 0; i < a2.length; i++) {
        if (a[a2[i]]) {
            delete a[a2[i]];
        } else {
            a[a2[i]] = true;
        }
    }
    for (var k in a) {
        diff.push(k);
    }
    return diff;
}
//usage:
console.log(arrayDiff(['red', 'white','green'], [ 'red','white', 'blue']));//["green", "blue"]
compare two array in javascript 
let arr1 = [1, 4, 7, 4, 2, 3];
let arr2 = [1, 2, 3, 4, 7, 18];

const is_same = arr1.length == arr2.length &&
  (arr1.every((currElem)=>{
    if(arr2.indexOf(currElem)> -1){
      return (currElem == arr2[arr2.indexOf(currElem)]);
    }return false
  })
)
console.log(is_same)
Source: www.30secondsofcode.org



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Category:
 Coding
Sub Category:
 Code Example
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