How to iterate over a JavaScript object?

Question

I have an object in JavaScript:

{
    abc: \'...\',
    bca: \'...\',
    zzz: \'...\',
    xxx: \'...\',
    ccc: \'...\',
    // ...
}

I

Answer 1

Really a PITA this is not part of standard Javascript.

/**
 * Iterates the keys and values of an object.  Object.keys is used to extract the keys.
 * @param object The object to iterate
 * @param fn (value,key)=>{}
 */
function objectForEach(object, fn) {
    Object.keys(object).forEach(key => {
        fn(object[key],key, object)
    })
}

Note: I switched the callback parameters to (value,key) and added a third object to make the API consistent other APIs.

Use it like this

const o = {a:1, b:true};
objectForEach(o, (value, key, obj)=>{
    // do something
});