4 all Items in a list loop logic

4EveryOne.js

// on every "yada" in "yada"....

function onEachIn(object, action) {
    try {
        for (var property in object) {
            if (Object.prototype.hasOwnProperty.call(object, property))
                action(property, object[property]);
        }
    } catch (e) {
        throw e;
    }
}