Note that best practice in Python 2.7 is to use new-style classes (not needed with Python 3), i.e. Also, there’s a difference between an ‘object’ and a ‘class’. To build a dictionary from an arbitrary object, it’s sufficient to use __dict__. Usually, you’ll declare your methods at class level and your attributes at instance level, so __dict__ should be fine. For … Read more
Your problem is that class B is not declared as a “new-style” class. Change it like so: and it will work. super() and all subclass/superclass stuff only works with new-style classes. I recommend you get in the habit of always typing that (object) on any class definition to make sure it is a new-style class. Old-style classes (also … Read more
Is your query returning array or object? If you dump it out, you might find that it’s an array and all you need is an array access ([]) instead of an object access (->).
Try the JavaScript in operator. And the inverse. Be careful! The in operator matches all object keys, including those in the object’s prototype chain. Use myObj.hasOwnProperty(‘key’) to check an object’s own keys and will only return true if key is available on myObj directly: Unless you have a specific reason to use the in operator, using myObj.hasOwnProperty(‘key’) produces the result most code is looking for.
I would recommend using JSON.stringify, which converts the set of the variables in the object to a JSON string. Most modern browsers support this method natively, but for those that don’t, you can include a JS version:
You have to create an object. Assign the values to the object. Then push it into the array:
You have two ways to do that, both use the Arrays utility class Implement a Comparator and pass your array along with the comparator to the sort method which take it as second parameter. Implement the Comparable interface in the class your objects are from and pass your array to the sort method which takes only one parameter. Example Output
You have two ways to do that, both use the Arrays utility class Implement a Comparator and pass your array along with the comparator to the sort method which take it as second parameter. Implement the Comparable interface in the class your objects are from and pass your array to the sort method which takes only one parameter. Example Output
You could make use of the Javascript DOM API. In particular, look at the createElement() method. You could create a re-usable function that will create an image like so… Then you could use it like this… See a working example on jsFiddle: http://jsfiddle.net/Bc6Et/
ECMAScript 6 introduces the easily polyfillable Object.assign: The Object.assign() method is used to copy the values of all enumerable own properties from one or more source objects to a target object. It will return the target object. The own length property of the array is not copied because it isn’t enumerable. Also, you can use … Read more