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C# 2021-09-15 08:15:02
static initializer
Static blocks or static initializers are used to initalize static fields in java we declare static blocks when we want to intialize static fields in our class. Static blocks gets executed exactly once when the class is loaded Static blocks are executed ... Add solution -
Javascript 2021-09-15 07:36:03
bind an event to dom element angular
import { AfterViewInit, Component, ElementRef} from '@angular/core'; constructor(private elementRef:ElementRef) {} ngAfterViewInit() { this.elementRef.nativeElement.querySelector('my-element') .addEventListener('click',... Add solution -
Javascript 2021-09-14 12:51:03
cascading dropdown for forms react
import React from 'react'; class Dropdown extends React.Component { constructor(props) { super(props); this.state = { countries : [], states : [], cities : [], selectedCountry : '--Choose Country--', selectedState : '--Choose State--'... Add solution -
Java 2021-09-14 03:21:02
super keyword in java
ObjMaker = function() {this.a = 'first';}; // ObjMaker is just a function, there's nothing special about it that makes // it a constructor. ObjMaker.prototype.b = 'second'; // like all functions, ObjMaker has an accessible prototype property that // we... Add solution
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