map javascript
function each(collection, action) {
if (Array.isArray(collection)) {
for (var i = 0; i < collection.length; i++) {
action(collection[i], i, collection);
}
} else {
for (var key in collection) {
action(collection[key], key, collection);
}
}
}javascript map
Shorthand: (key,value) Map
const callbackMap = new Map<string, PushEventCallback>([
["addComment", addCommentCallback],
["commentModified", editCommentCallback]
]);
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Map#:~:text=Cloning%20and%20merging%20MapsCopyright © 2021 Codeinu
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