I\'m trying to make a simple function that will swap the values of two properties on the same or different global objects.
object1 = {\"key 1\":\"value 1\"}
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I would do it as follows:
var obj1 = {
"key1" : "value1",
"key2" : "Value2"
};
var obj2 = {
"key3" : "value3",
"key4" : "Value4"
};
function swap(sourceObj, sourceKey, targetObj, targetKey) {
var temp = sourceObj[sourceKey];
sourceObj[sourceKey] = targetObj[targetKey];
targetObj[targetKey] = temp;
}
swap(obj1, "key1", obj1, "key2");
swap(obj1, "key1", obj2, "key4");
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With ES6 destructuring, you can now swap without a temp variable. This applies to not only swapping variable values as in [a, b] = [b, a]
but more complex expressions involving properties of objects, like so: [obj.key1, obj.key2] = [obj.key2, obj.key1]
. To avoid more redundancy, you need to use a swap function:
function swap(obj, key1, key2) {
[obj[key1], obj[key2]] = [obj[key2], obj[key1]];
}
swap(obj, 'key1', 'key2');
The same idea applies with two objects and two keys:
function swap(obj1, key1, obj2, key2) {
[obj1[key1], obj2[key2]] = [obj2[key2], obj1[key1]];
}
swap(obj1, 'key1', obj2, 'key2');
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