A JavaScript equivalent of PHP’s array_diff_key
function array_diff_key (arr1) {
// http://kevin.vanzonneveld.net
// + original by: Ates Goral (http://magnetiq.com)
// + revised by: Brett Zamir (http://brett-zamir.me)
// + input by: Everlasto
// * example 1: array_diff_key({red: 1, green: 2, blue: 3, white: 4}, {red: 5});
// * returns 1: {"green":2, "blue":3, "white":4}
// * example 2: array_diff_key({red: 1, green: 2, blue: 3, white: 4}, {red: 5}, {red: 5});
// * returns 2: {"green":2, "blue":3, "white":4}
var argl = arguments.length,
retArr = {},
k1 = '',
i = 1,
k = '',
arr = {};
arr1keys: for (k1 in arr1) {
for (i = 1; i < argl; i++) {
arr = arguments[i];
for (k in arr) {
if (k === k1) {
// If it reaches here, it was found in at least one array, so try next value
continue arr1keys;
}
}
retArr[k1] = arr1[k1];
}
}
return retArr;
}
Example 1
array_diff_key({red: 1, green: 2, blue: 3, white: 4}, {red: 5});
Should return
{"green":2, "blue":3, "white":4}
Example 2
array_diff_key({red: 1, green: 2, blue: 3, white: 4}, {red: 5}, {red: 5});
Should return
{"green":2, "blue":3, "white":4}