There are a few steps you need to take to properly store this information in your localStorage. Before we get down to the code however, please note that localStorage (at the current time) cannot hold any data type except for strings. You will need to serialize the array for storage and then parse it back … Read more
use filter and map: const arr =[{“value”:”abc”,”checked”:true},{“value”:”xyz”,”checked”:false},{“value”:”lmn”,”checked”:true}]; const result = arr.filter(res=>res.checked).map(ele=>ele.value); console.log(result);
You could do this. There is probably also a jquery way… function Box(obj) { for (var fld in obj) { this[fld] = obj[fld]; } } You can include a test for hasOwnProperty if you’ve (I think foolishly) extended object function Box(obj) { for (var fld in obj) { if (obj.hasOwnProperty(fld)) { this[fld] = obj[fld]; } … Read more
Isn’t this the normal way to free the memory associated with an object? This is a common way of managing dynamically allocated memory, but it’s not a good way to do so. This sort of code is brittle because it is not exception-safe: if an exception is thrown between when you create the object and … Read more
var pause_menu = { pause_button : { someProperty : “prop1”, someOther : “prop2” }, resume_button : { resumeProp : “prop”, resumeProp2 : false }, quit_button : false }; then: pause_menu.pause_button.someProperty //evaluates to “prop1” etc etc.
You can use ObjectOutputStream You write the object (obj in the code below) to the ObjectOutputStream, your object you want to convert to an input stream must implement Serializable. ByteArrayOutputStream baos = new ByteArrayOutputStream(); ObjectOutputStream oos = new ObjectOutputStream(baos); oos.writeObject(obj); oos.flush(); oos.close(); InputStream is = new ByteArrayInputStream(baos.toByteArray());
Use fat arrow function in ES6 (generally called as arrow function) anotherOne = ()=> { … } Call like this onClick={this.anotherOne}; no need to bind in constuctor From the ECMA spec Any reference to arguments, super, this, or new.target within an ArrowFunction must resolve to a binding in a lexically enclosing environment. Typically this will … Read more
If you want the == to work, then implement the __eq__ method in your class to perform the rich comparison. If all you want to do is compare the equality of all attributes, you can do that succinctly by comparison of __dict__ in each object: class MyClass: def __eq__(self, other) : return self.__dict__ == other.__dict__
You have to modify the contents of the List<string> passed to the extension method, not the variable that holds the reference to the list: public static void ForceSpaceGroupsToBeTabs(this List<string> lines) { string spaceGroup = new String(‘.’, 4); for (int i = 0; i < lines.Count; i++) { lines[i] = lines[i].Replace(spaceGroup, “T”); } }
As you suspect, you’re returning the match of the first property seen. You should return false if that property doesn’t match, but keep looking otherwise. Also, return false if there’s no prop property found on y (that is, the counts match, but not the actual properties). If all properties have matched, return true: var deepEqual … Read more